SURFACE OBSERVATION CLIMATIC SUMMARIES

Transcription

1 USAFETAC/DS-90/223 AD-A SURFACE OBSERVATION CLIMATIC SUMMARIES FOR CAMP WALKER, KOREA Prepared by 01-A, USAFETAC ASHEVILLE, NORTH CAROLINA JULY 1990 APROVED FO PULI RELEASE; lowibtriuion IS: UNUMITED USAF ENVIRONMENTAL TECHNICAL APPLICATIONS CENTER Scott Air Force Bae", Illinois, f

2 REVIEW AND APPROVAL STATEMENT USAFETAC/DS-90/223, SURFACE OBSERVATION CLIMATIC SUMMARIES FOR CAMP WALKER/A-805 (TAEGU) KOREA, JULY 1990 HAS BEEN REVIEWED AND IS APPROVED FOR PUBLIC RELEASE. THERE IS NO OBJECTION TO UNLIMITED DISTRIBUTION OF THIS DOCUMENT TO THE PUBLIC AT LARGE, OR BY THE DEFENSE TECHNICAL INFORMATION CENTER (DTIC) TO THE NATIONAL TECHNICAL INFORMATION SERVICE (NTIS). JOSEPH L. BOYTE CHIEF, CLIMATIC APPLICATIONS, OL-A FOR THE COMMANDER WALTER S. BURGMANN SCIENTIFIC AND TECHNICAL INFORMATION PROGRAM MANAGER OCT i3s0 P!.... I.' U!FTCDS9/2 ag -

3 REPORT DOCUMENTATION PAGE 2. REPORT DATE: JULY REPORT TYPE AND DATES COVERED: DATA SUMMARY, JANUARY 1973 TO MARCH TITLE AND SUBTITLE: SURFACE OBSERVATION CLIMATIC SUMMARIES (SOCS) FOR CAMP WALKER/A-805 KOREA 7. PERFORMING ORGANIZATION NAME AND ADDRESS: OPERATING LOCATION A, USAFETAC, FEDERAL BUILDING, ASHEVILLE, NC PERFORMING ORGANIZATION REPORT NUMBER: USAFETAC/DS-90/ SPONSORING/MONITORING AGENCY NAME AND ADDRESS: USAF ENVIORNMENTAL TECHNICAL APPLICATIONS CENTER (USAFETAC), SCOTT AFB, IL SUPPLEMENTARY NOTES: EFFECTIVE JULY , THIS PRODUCT REPLACED TWO USAFETAC DOCUMENTS FORMERLY KNOWN AS THE REVISED UNIFORM SUMMARY OF SURFACE OBSERVATIONS (RUSSWO) AND THE LIMITED SURFACE OBSERVATIONS CLIMATIC SUMMARY (LISOCS). EXISTING RUSSWOS AND LISOCS WILL CONTINUE IN USE, BUT WILL EVENTUALLY BE BY A SOCS. 12A. DISTRIBUTION/AVAILABILITY STATEMENT: APPROVED FOR PUBLIC RELEASE, DISTRIBUTION IS UNLIMITED. 13. ABSTRACT: SURFACE OBSERVATION CLIMATIC SUMMARIES (SOCS) PROVIDE STATISTICAL CLIMATIC SUMMARIES OF SURFACE WEATHER OBSERVATIONS TAKEN AND RECORDED AT SPECIFIED USAF, CIVILIAN AND FOREIGN OBSERVING STATIONS. HOURLY OBSERVATIONS ARE SUMMARIZED FROM A 10-YEAR PERIOD OF RECORD (POR). "SUMMARY OF DAY" (SOD) INFORMATION IS SUMMARIZED FROM ALL AVAILABLE DATA IN THE OL-A, USAFETAC CLIMATIC DATABASE. 14. SUBJECT TERMS: CLIMATOLOGY, METEOROLOGICAL DATA, ATMOSPHERIC PHENOMENA, WEATHER, SOCS, CAMP WALKER/A-805 KOREA, CEILING, CLOUD COVER, SNOW DEPTH, HUMIDITY, PRESSURE, PRECIPITATION, SNOW TEMPERATURE, VISIBILITY, WIND. 15. NUMBER OF PAGES: SECURITY CLASSIFICATION OF REPORT: UNCLASSIFIED 18. SECURITY CLASSIFICATION OF THIS PAGE: UNCLASSIFIED 19. SECURITY CLASSIFICATION OF ABSTRACT: UNCLASSIFIED 20. LIMITATION OF ABSTRACT: UL DTIC STANDARD FORM 298 III USAFETAC/DS-90/223 - Page 3

4 PREFACE EFFECTIVE 1 JULY 1988, THE SURFACE OBSERVATION CLIMATIC SUMMARIES (SOCS) REPLACED TWO OTHER USAFETAC PRODUCTS OF LONG STANDING: THE RUSSWO (REVISED UNIFORM SUMMARY OF SURFACE WEATHER OBSERVATIONS) AND LISOCS (LIMITED SURFACE OBSERVATION CLIMATIC SUMMARY). RUSSWOS AND LISOCS NOW IN EXISTENCE WILL CON- TINUE TO BE USED UNTIL THEY ARE EVENTUALLY REPLACED BY SOCS. THIS PRODUCT HAS BEEN ISSUED IN OTHER FORMS UNDER SEVERAL OTHER NAMES. IT WAS INTRODUCED IN THE EARLY 1940'S AS THE "SFCSUM," OR "SURFACE SUMMARY." THE ORIGINAL "USSWO," OR "UNIFORM SUMMARY OF SURFACE WEATHER OBSERVATIONS," DEBUTED IN THE USSWO GRADUALLY EVOLVED INTO THE "RUSSWO" AND THE "LISOCS." IT FINALLY BECAME THE NEW "SURFACE OBSERVATION CLIMATIC SUMMARIES" OR "SOCS" IN JULY THE SOCS (LIKE ITS PREDECESSORS) IS PREPARED BY USAFETAC'S OPERATING LOCATION A AT ASHEVILLE, NC HERE, CLIMATOLOGISTS USE STATE-OF-THE-ART COM- PUTER TECHNOLOGY TO SUMMARIZE WEATHER OBSERVATIONS COLLECTED FROM SELECTED MIL- ITARY, CIVILIAN, AND FOREIGN REPORTING STATIONS. SUMMARIES ARE PREPARED FROM DATA THAT HAS BEEN COLLECTED, QUALITY-CONTROLLED, AND STORED IN OL-A'S WORLDWIDE SUR- FACE WEATHER OBSERVATION DATABASE. ALTHOUGH PREVIOUS VERSIONS OF THIS PRODUCT ONLY OFFERED SIX PARTS, SOCS PROV!DES EIGHT (A-H). THE ADDITIONS ARE THE CROSSWIND AND HEATING-COOLING DEGREE DAY SUMMARIES. PRECEDING EACH PART IS A BRIEF DISCUSSION OF THAT PARTICULAR PART, A DESCRIPTION OF THE DATA, AND AN EXPLANATION OF HOW THE DATA IS PRESENTED. IV USAFETAC/DS-90/223 - Page 4

5 CON TENT S INTRODUCTION...1 STATION PERIO OF RECORD... 1 DATA SOURCES... 1 TERMS EXPLAINED TIME CONVENTIONS... 2 ABBREVIATIONS... 2 SUMMARY DESCRIPTIONS... 2 STATION HISTORY... 3 PART A - ATMOSPHERIC PHENOMENA SUMMARIES... A-i-i SPECIFIED PHENOMENA PERCENT OCCURRENCE FREQUENCY (FROM HOURLY OBS)... A-2-1 PERCENT OCCURRENCE FREQUENCY (FROM SOD DATA)... A-3-1 PERCENT OCCURRENCE FREQUENCY (THUNDERSTORMS)... A-4-1 VERSUS WIND DIRECTION--PERCENT OCCURRENCE FREQUENCY... A-5-1 PART B - PRECIPITATION, SNOWFALL, AND SNOW DEPTH... B-i-1 PRECIPITATION PERCENT OCCURRENCE FREQUENCY... B-2-1 MONTHLY TOTALS... 8B-2-2 DAILY EXTREMES... B-2-3 SNOWFALL PERCENT OCCURRENCE FREQUENCY...8B-3-1 MONTHLY TOTALS... 8B-3-2 DAILY EXTREMES... 8B-3-3 SNOW DEPTH PERCENT OCCURRENCE FREQUENCY...8B-4-1 DAILY EXTREMES... 8B-4-2 SNOWFALL/SNOW DEPTH FIRST AND LAST DAYS OF OCCURRENCE BY SNOW-YEAR... B-5-1 PART C - SURFACE WIND WIND DIRECTION VS WIND SPEED- -POF (FROM HOURLY OBS)... C-4-1 PART D - CEILING, VISIBILITY AND SKY COVER CEILING VS VISIBILITY--POF (FROM HOURLY OBS)...0D-2-i SKY COVER--POF (FROM HOURLY OBS) V USAFETAC/DS-90/223 -Page 5

6 PART E - TEMPERATURE AND RELATIVE HUMIDITY... E-1-1 TEMPERATURES- -CUMULATIVE POF (FROM SO0 DATA) MAXIMA... E-2-i MINIMA... E-2-2 MEAN... E-2-3 MONTHLY TEMPERATURES (FROM SOD DATA) MAXIMA... E-3-1 MINIMA... E-3-2 MEAN... E-4-1 DRY BULB, WET BULB, DEW POINT TEMPERATURES (FROM HOURLY OBS) DRY BULB... E-5-1 WET BULB... E-5-2 DEW POINT... E-5-3 RELATIVE HUMIDITY (FROM HOURLY OBS) CUMULATIVE PERCENT OCCURRENCE FREQUENCY... E-6-i PART F - PRESSURE (FROM HOURLY OBS)... F-1-i SEA LEVEL PRESSURE... F-2-i ALTIMETER SETTING... F-3.1 STATION PRESSURE... F-4-1 PART G - CROSSWIND SUMMARIES (FROM HOURLY OBS)...6G-i-i PERCENT OCCURRENCE FREQUENCY... G-2-1 PART H - DEGREE DAY SUMMARIES (FROM HOURLY OBS)... H-i-i HEATING DEGREE DAYS... 8H-2-i COOLING DEGREE DAYS... H-3-1 SNOTE: THE AWS CLIMATIC BRIEF IS ATTACHED AT THE END OF THE SOCS VI USAFETAC/DS-90/223 -Page 6

7 INTRODUCTION STATION PERIOD OF RECORD. HOURLY OBSERVATIONS: APR 79 - MAR 89 (METAR). SUMMARY OF DAY DATA: JAN 73 - MAR 89 (PART TIME). SUMMARY OF DAY DATA: FULL TIME -- NONE -- FOR THIS SITE HOURS SUMMARIZED: 0500 LST THROUGH 2000 LST. (HOURS VARY, CLOSED WEEKENDS, ETC) DATA SOURCES. THESE SUMMARIES ARE COMPILED FROM "HOURLY OBSERVATIONS" AND/ OR SUMMARY OF DAY DATA," DEPENDING ON THE PHENOMENA OR OCCURRENCE BEING SUMMARIZED. THE TWO SOURCES ARE DEFINED IN "TERMS EXPLAINED." TERMS EXPLAINED: BIVARIATE DISTRIBUTION: A BIVARIATE DISTRIBUTION GIVES THE JOINT DIS- TRIBUTIONS OF TWO RELATED VARIABLES. AN EXAMPLE IS THE BIVARIATE DIS- TRIBUTION OF CEILING AND VISIBILITIES IN PART D. EACH ROW AND EACH COL- UMN OF A BIVARIATE DISTRIBUTION IS A FREQUENCY DISTRIBUTION. JOINT FREQ- UENCIES ARE FOUND AT THE ROW-COLUMN INTERSECTIONS. HOURLY OBSERVATIONS: ALL RECORD OR REORD-SPECIAL OBSERVATIONS ON AWS FORMS 10/iDA (OR EQUIVALENT) AT SCHEDULED HOURLY INTERVALS. SUMMARY OF DAY (SOD) DATA: DATA COMPILED FROM ALL AVAILABLE OBSERVATIONAL SOURCES, INCLUDING HOURLY OBSERVATIONS, SPECIAL OBSERVATIONS, REMARKS, AND ACTUAL "SUMMARY OF DAY" DATA RECORDED IN COLUMNS OF AWS FORMS 10/IDA (OR EQUIVALENT) FOR ANY GIVEN DAY. NOTE: EXTREMES OCCURRING DURING NON- OPERATIONAL HOURS AND/OR DAYS ARE NOT REFLECTED IN THESE SUMMARIES. MEAN: THE SUM OF ALL THE VALUES DIVIDED BY THE NUMBER OF VALUES. MEASURABLE AMOUNT: TRACE. ANY PRECIPITATION OR SNOWFALL AMOUNT GREATER THAN A MEDIAN: THE MIDDLE VALUE WHEN THE VALUES ARE IN ASCENDING ORDER. IF THE NUMBER OF VALUES IS EVEN, THE MEDIAN IS HALFWAY BETWEEN THE TWO MIDDLE VALUES. PERCENT OCCURRENCE FREQUENCY (POF): IN STATISTICS, FREQUENCY IS THE NUM- BER OF TIMES A GIVEN COUNT OR EVENT OCCURS. IN THE SOCS, THIS IS EXPRESSED AS THE PERCENT OCCURRENCE FREQUENCY (POF)o WHERE THE FREQUENCY (NUMBER OF OCCURRENCES) IS GIVEN AS A PERCENT OF ALL POSSIBLE OCCURRENCES IN THE SAMPLE (PERIOD SUMMARIZED). FOR EXAMPLE, IF SNOW FELL ON 5 OUT OF 100 DAYS WE COULD EXPRESS THE "PERCENT OCCURRENCE FREQUENCY" OF SOW AS 5 PERCENT OVER THE 100-DAY PERIOD. MAY BE USED INTERCHANGEABLY WITH "PERCENT FREQUENCY OF OCCURRENCE." PERIOD OF RECORD: THE SIZE OF THE OBSERVATIONAL DATA SAMPLE, IN YEARS. USAFETAC/DS-90/223 - Page 7

8 PRECIPITATION: EQUIVALENT. A TERM THAT INCLUDES BOTH LIQUID PRECIPITATION AND WATER STANDARD DEVIATION: A MEASURE OF DISPERSION ON THE VARIABILITY OF THE QUANTITY CONCERNED ABOUT ITS ARITHMETIC MEAN. THE LARGER THE STANDARD DEVIATION, THE GREATER THE VARIABILITY. TIME CONVENTIONS: ALL TIMES IN THE SOCS ARE EXPRESSED IN LOCAL STANDARD TIME (LST). USERS SHOULD MAKE ADJUSTMENTS FOR DAYLIGHT SAVING TIMES IN THEIR AREAS. IN SUMMARIES THAT SHOW DIURNAL VARIATIONS, THE DATA IS SUMMARIZED USING THE FOLLOWING STANDARD 3-HOUR PERIODS (ALL LST): NOTE 1. DURING PART TIME PERIODS, THE FIRST AND LAST 3-HOUR PERIODS MAY HAVE SIGNIFICANT SHORTFALLS IN OBSERVATION COUNTS. ABBREVIATIONS USED: AMT AMOUNT LT LESS THAN ANN ANNUAL M METER BARD BAROMETER MB MILLIBAR C CENTIGRADE (CELSIUS) MPS METERS PER SECOND DEG DEGREE MSL MEAN SEA LEVEL DB DRY BULB TEMPERATURE MEAS MEASURABLE DP DEW POINT TEMPERATURE NO. NUMBER EQ EQUAL OBS OBSERVATION F FAHRENHEIT OBST OBSTRUCTION FRZG FREEZING POF PERCENT OCCURRENCE FREQUENCY FT FEET PRECIP PRECIPITATION GE GREATER THAN OR EQUAL TO SD STANDARD DEVIATION GMT GREENWICH MEAN TIME SOD SUMMARY OF DAY GT GREATER THAN TEMP TEMPERATURE HG INCHES OF MERCURY TSTM THUNDERSTORM HT HEIGHT VSBY VISIBILITY KTS KNOTS VSN VISION LE LESS THAN OR EQUAL TO WB WET BULB TEMPERATURE LST LOCAL STANDARD TIME WBAN AWS FORM 10/IA UTC *COORDINATED UNIVERSAL TIME SUMMARY DESCRIPTION: A BRIEF DESCRIPTION OF THE DATA PRECEDES EACH PART IN THE SOCS. * UTC REPLACED GMT ON 1 AUGUST 1988 NOTE: OL-A/USAFETAC DERIVES STATION LATITUDE/LONGITUDE COORDINATES AND AIRFIELD ELEVATION DATA FROM THE AWS MASTER STATION CATALOG. THIS INFORMATION IS PREENTED ON THE AWS CLIMATIC BRIEF FOR EACH STATION. THE STATION DATA MAY DIFFER FROM INFORMATION CONTAINED IN THE SOCS STATION HISTORY (DATA SUPPLIED BY AWS UNITS). THE STATON DATA MAY ALSO VARY FROM DATA PRESENTED IN DOD FLIGHT INFORMATION PUBLICATIONS (FLIP). 2 USAFETAC/DS-90/223 - Page 8

9 STATION NO. STATION NAME LATITUDE ILONGITUDE F LD ELEV (FT) CALL SIGN WMO NMBR ION SUMMARY~ CAMP WALKER/TAEGU, SOUTH KOREA N E frktg STATION LOCATION AND INSTRUMENTATION HISTORY I NMbr II Type IAt This Location II I Etev Above MSL I OBS of GEOGRAPHICAL LOCATION & NAME of I------I LATITUDE LONGITUDE PER Loc Station IF rom To IFLU (FT)IBARO (FT)I DAY I I I1 ICamp Walker/Taegu,S. Korea IAAF IJan 70 Imay 81 fn E I230 None 12 I2 ISame I AAF IJun 81 IJan 89 Same Same 244 IN/A 12 SAI ON NOITTINNM I LAIEI LOGTD II F LV(T ASGI IWONB I ICM AKRTEU OT I745 OE I N I 5 I E 5 I 24I RKT I I STAIO LOAIO AN ISRMNAIO H ITORY I NI b I I Tye I AtT~ oi o I I ~vaoe I S B I of I GE G A H C L L C L T O A E I o I.... T.I. O....I T LA O U E H I AON TU E I.....I.....I PE I o I I S a i n I Fr TRANSIT I To R I i GROUND IFL ( IB R ( T I IA I mb I Daeo UFC I EQ IPMN IFRAION III I I 2 JaR apw~e/ag,.kra 70 A Sam t May 81 AF Jn7 SameE12 I sam None 5 I 3 I I 3 aeaf Jn8 Jan 89 Same Same Same1 of Ch I -- ng RE AR S AD I IO A EI P Nmbr I Date of I SURFACE WIND EOUIPMENT INFORMATION of I Change REMARKS,, ADDITIONAL EOUIP Loc j j LOCATION j TYPE OF I TYPE OF j HT ABOVE I MENT, OR REASON FOR CHANGE I I I I TRANSMITTER I RECORDER I GROUND I 1 Jan 70 fatop tower IAN/GMO-11 None I7Oft I2 1May 81 Same Same None Same I3 1Jan 89 Same Same None Same i3 USAFETAC/DS-90/223 - Page 9

10 USAFETAC/DS-90/223 -Page 10

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12 PART A ATMOSPHERIC PHENOMENA SUMMARIES THIS PART SUMMARIZES SPECIFIED ATMOSPHERIC PHENOMENA IN CATEGORIES AS FOLLOWS: THUNDERSTORMS: ALL REPORTED OCCURRENCES OF THUNDERSTORMS, TORNADES, AND WATERSPOUTS. LIQUID PRECIPITATION: FREEZING PRECIPITATION: RAIN OR DRIZZLE FALLING TO THE GROUND BUT NT FREEZING. FREEZING RAIN OR FREEZING DRIZZLE (GLAZE). FROZEN PRECIPITATION: SNOW, SNOW PELLETS, SLEET, SNOW GRAINS, ICE CRYSTALS, ICE PELLETS. IN JANUARY 1968, SNOW PELLETS BECAME KNOWN AS SMALL HAIL. HAIL: A.L OCCURRENCES OF HAIL. ALL PRECIPITATION: INCLUDES ALL OBSERVATIONS REPORTING PRECIPITATION. BECAUSE MORE THAN ONE TYPE OF PRECIPITATION MAY BE INCLUDED IN THE SAME OBSERVATION, THE SUM OF PERCENTAGES IN THE INDIVIDUAL CATEGORIES MAY EXCEED THE PERCENTAGES IN THIS CATEGORY. FOG: INCLUDES ALL REPORTED FOG, ICE FOG, AND GROUND FOG. SMOKE AND/OR HAZE: SMOKE, HAZE, OR COMBINATIONS OF THE TWO. BLOWING SNOW: ALL REPORTS OF BLOWING SNOW, INCLUDING DRIFTING SNOW, WHEN REPORTED. DUST AND/OR SAND: DUST, SAND, BLOWING DUST, BLOWING SAND, OR COMBINATIONS OF THESE. BLOWING SPRAY: THE "ALL OBSTRUCTIONS TO VISION" CATEGORY ACCOUNTS FOR BLOWING SPRAY, IF AND AS REPORTED. ALL OBSTRUCTIONS TO VISION: THIS CATEGORY INCLUDES ALL REPORTS OF OBSTRUCTIONS TO VISION. SINCE THE OCCURRENCE OF MORE THAN ONE OBSTRUCTION TO VISION MAY BE REPORTED IN THE SAME OBSERVATION, THE SUM OF THE PERCENTAGES IN THE INDIVIDUAL CATEGORIES MAY EXCEED THE PERCENTAGES IN THIS CATEGORY. SPECIFIED PHENOMENA--PERCENT OCCURRENCE FREQUENCY. THESE TABLES GIVE THE PERCENT OCCURRENCE FREQUENCY (POF) FOR THE ATMOSPHERIC PHENOMENA SHOWN. THE DATA WAS TAKEN ONLY, AND IS SUMMARIZED AS FOLLOWS: - BY EIGHT 3-HOUR STANDARD TIME PERIODS FOR EACH MONTH (ALL YEARS COMBINED). - BY MONTH (ALL YEARS AND ALL HOURS COMBINED). - BY YEAR (ALL YEARS AND ALL HOURS COMBINED). A - 1I - 2 USAFETAC/DS-90/223 - Page 12

13 SPECIFIED PHENOMENA--PERCENT OCCURRENCE FREQUENCY (POF). THIS TABLE IS THE ONLY ONE IN PART A THAT IS PRODUCED FROM SUMMARY OF DAY DATA. DATA IS SUMMARIZED MONTHLY AND ANNUALLY FOR ALL YEARS COMBINED. THUNDERSTORMS--PERCENT OCCURRENCE FREQUENCY. THIS TABLE GIVES THE PERCENT OCCURRENCE FREQUENCY OF THUNDERSTORMS REPORTED ON THE HOURLY OBSERVATION. DATA IS SUMMARIZED SAME AS FOR FIRST TABLE IN THIS PART. SPECIFIED PHENOMENA VS WIND DIRECTION--PERCENT OCCURRENCE FREQUENCY. THESE TABLES INCLUDE SUMMARY OF MONTH FOR ALL HOURS AND YEARS COMBINED. DIRECTION CATEGORIES ARE AS SPECIFIED BY THE LOCAL WEATHER STATION. WIND NOTE 1: REPORTING PRACTICES HAVE CHANGED WITH TIME. METAR AND SYNOPTIC REPORTING STATIONS RECORD (ON AWS FORMS 10/10A) AND TRANSMIT LONGLINE ONLY THE HIGHEST ORDER ATMOS- PHERIC PHENOMENA THAT AFFECTS VISIBILITY. METAR STATIONS STARTED THIS PROCEDURE IN JANUARY 1968, BUT SYNOPTIC STATIONS ALWAYS DID IT THAT WAY. IN JANUARY 1970, METAR STATIONS STARTED RECORDING ALL ATMOSPHERIC PHENOMENA THAT AFFECTED VISIBILITY, BUT CONTINUED TO TRANSMIT ONLY THE HIGHEST ORDER. FOR EXAMPLE, IF THE RECORDED OBS- ERVATION INCLUDED RAIN, FOG AND HAZE, ONLY THE RAIN WAS TRANSMITTED. BECAUSE OF THESE PROCEDURES, THE USAFETAC DATABASE WOULD SHOW ONLY RAIN AS AN OBSTRUC]ION. THEREFORE, THE OBSTRUCTION TO VISION (AND TO A LESSER EXTENT, PRECIPITATION) SUMMARIES FOR METAR AND SYNOPTIC STATIONS ARE HIGHLY QUESTIONABLE. NOTE 2: FOREIGN METAR REPORTING STATIONS FREQUENTLY DO NOT TRANSMIT OBSTRUCTIONS TO VISION WHEN VISIBILITIES EXCEED 1000 METERS. NOTE 3: A VALUE OF ".0' IN ANY SUMMARY REPRESENTS ONE OR MORE OCCURRENCES THAT, IN AGGREGATE, AMOUNT TO LESS THAN.05 PERCENT. NOTE 4: DURING PART TIME PERIODS, THESE TABLES MAY NOT ACCURATELY REFLECT NIGHTTIME AND/OR WEEKEND OCCURRENCES OF CERTAIN PHENOMENA. A USAFETAC/DS-90/223 - Page 13

14 PERCENTAGE FREQUENCY OF HOURS WITH VARIOUS ATMOSPHERIC PHENOMENA LST TO UTC: - 9 MONTH: JAN HOURS TSTMS LIQUID FREEZ FROZEN HAIL ALL FOG SMOKE BLOWING DUST ALL TOTAL (LST) I PRECIP PRECIP PRECIP PRECIP &/OR SNOW &/OR OBST NO. OF HAZE SAND TO VSN OBS ALL HOURS MONTH: FEB I ALL HOURS A USAFETAC/DS-90/223 - Page 14

15 PERCENTAGE FREQUENCY OF HOURS WITH VARIOUS ATMOSPHERIC PHENOMENA LST TO UTC: - 9 MONTH: MAR HOURS TSTMS LIQUID FREEZ FROZEN HAIL ALL FOG SMOKE BLOWING DUST ALL TOTAL (LST) I PRECIP PRECIP PRECIP PRECIP &/OR SNOW &/OR OBST NO. OF HAZE SAND TO VSN OBS AL HOURS MONTH: APR ALL HOURS ,...,... A USAFETAC/DS-90/223 - Page 15

16 PERCENTAGE FREQUENCY OF HOURS WITH VARIOUS ATMOSPHERIC PHENOMENA LST TO UTC: - 9 MONTH: MAY HOURS j TSTMS LIQUID FREEZ FROZEN HAIL ALL FOG SMOKE BLOWING DUST ALL TOTAL (LST) ( PRECIP PRECIP PRECIP PRECIP &/OR SNOW &/OR OBST NO. OF HAZE SAND TO VSN OBS ALL HOURS MONTH: JUN ALL HOURS A USAFETAC/DS-90/223 - Page 16

17 PERCENTAGE FREQUENCY OF HOURS WITH VARIOUS ATMOSPHERIC PHENOMENA LST TO UTC: - 9 MONTH: JUL HOURS TSTMS LIQUID FREEZ FROZEN HAIL ALL FOG SMOKE BLOWING DUST ALL TOTAL (LST) I PRECIP PRECIP PRECIP PRECIP &/OR SNOW &/OR OBST NO. OF HAZE SAND TO VSN OBS ALL HOURS MONTH: AUG ALL HOURS A USAFETAC/DS-90/223 - Page 17 L - - nl ls mni n i

18 PERCENTAGE FREQUENCY OF HOURS WITH VARIOUS ATMOSPHERIC PHENOMENA LST TO UTC: - 9 MONTH: SEP HOURS I TSTMS LIQUID FREEZ FROZEN HAIL ALL FOG SMOKE BLOWING DUST ALL OTAL (LST) j PRECIP PRECIP PRECIP PRECIP &/OR SNOW &/OR OBST NO. OF HAZE SAND TO VSN OBS ALL HOURS MONTH: OCT ALL HOURS A USAFETAC/DS'90/223 - Page 18

19 PERCENTAGE FREQUENCY OF HOURS WITH VARIOUS ATMOSPHERIC PHENOMENA LST TO UTC: - 9 MONTH: NOV HOURS I TSTMS LIQUID FREEZ FROZEN HAIL ALL FOG SMOKE BLOWING DUST ALL TOTAL (LST) I PRECIP PRECIP PRECIP PRECIP &/OR SNOW &/OR OBST NO. OF HAZE SAND TO VSN OBS ALL HOURS MONTH: DEC ALL HOURS A "2 6 USAFETAC/DS-90/223 - Page 19

20 PERCENTAGE FREQUENCY OF VARIOUS ATMOSPHERIC PHENOMENA LST TO UTC: - 9 HOURS: ALL MONTH I TSTMS LIQUID FREEZ FROZEN HAIL ALL FOG SMOKE BLOWING DUST ALL TOTAL PRECIP PRECIP PRECIP PRECIP &/OR SNOW &/OR OBST NO. OF HAZE SAND TO VSN OBS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUALI A USAFETAC/DS-90/223 - Page 20

21 OPERATING LOCATION 'A' PERCENTAGE FREQUENCY OF DAYS WITH VARIOUS ATMOSPHERIC PHENOMENA FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL MONTH TSTMS LIQUID FREEZ FROZEN HAIL ALL FOG SMOKE BLOWING DUST ALL TOTAL PRECIP PRECIP PRECIP PRECIP &/OR SNOW &/OR OBST NO. OF HAZE SAND TO VSN OBS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL] A I USAFETAC/DS-90/223 -Page 21

22 PERCENTAGE FREQUENCY OF OCCURRENCE OF THUNDERSTORMS FROM4 HOURLY OBSERVATIONS LST To UTC: - 9 HOURS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC (LST) , I I ALL HOURS TOTALI OBS USAFETAC/DS-90/223 -Page 22

23 PERCENTAGE FREQUENCY OF OCCURRENCES OF ATMOSPHERIC PHENOMENA VERSUS WIND DIRECTION LST TO UTC: - 9 MONTH: JAN HOURS: ALL PHENOMENA I CALM VARIABLE NO OF OBS TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS MONTH: FEB HOURS: ALL TSTMS... TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS A -5 - I USAFETAC/DS-90/223 - Page 23

24 PERCENTAGE FREQUENCY OF OCCURRENCES OF ATMOSPHERIC PHENOMENA VERSUS WIND DIRECTION LST TO UTC: - 9 MONTH: MAR HOURS: ALL PHENOMENA I CALM VARIABLE NO OF OBS TSTMS... TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS MONTH: APR HOURS: ALL TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS I A USAFETAC/DS-90/223 - Page 24

25 PERCENTAGE FREQUENCY OF OCCURRENCES OF ATMOSPHERIC PHENOMENA VERSUS WIND DIRECTION LST TO UTC: - 9 MONTH: MAY HOURS: ALL PHENOMENA I CALM VARIABLE NOOIF OBS TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS I MONTH: JUN HOURS: ALL TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS A USAFETAC/DS-90/223 - Page 25 : - IIIIIass

26 $ OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCES OF ATMOSPHERIC PHENOMENA VERSUS WIND DIRECTION LST TO UTC: - 9 MONTH: JUL HOURS: ALL PHENOMENA I CALM VARIABLE NO OF OBS TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS MONTH: AUG HOURS: ALL TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS A USAFETAC/DS-90/223 - Page 26 I

27 PERCENTAGE FREQUENCY OF OCCURRENCES OF ATMOSPHERIC PHENOMENA VERSUS WIND DIRECTION LST TO UTC: - 9 MONTH: SEP HOURS: ALL PHENOMENA I CALM VARIABLE NO OF 085 TSTMS LIQUID U 235 PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS OCT HOURS: ALL TSTMS u LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES total TOTAL OBS A USAFETAC/DS-90/223 - Page 27

28 PERCENTAGE FREQUENCY OF OCCURRENCES OF ATMOSPHERIC PHENOMENA VERSUS WIND DIRECTION LST TO UTC: - 9 MONTH: NOV HOURS: ALL PHENOMENA I CALM VARIABLE NO OF OBS TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS MONTH: DEC HOURS: ALL TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS A USAFETAC/DS-90/223 - Page 28

29 PERCENTAGE FREQUENCY OF OCCURRENCES OF ATMOSPHERIC PHENOMENA VERSUS WIND DIRECTION STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOO OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTHS: ALL PHENOMENA I CALM VARIABLE NO OF OBS TSTMS LIQUID PRECIP FREEZING PRECIP FROZEN PRECIP FOG FOG WITH VIS GE 1/2 MILES TOTAL OBS A USAFETAC/DS-90/223 - Page 29

30 USAFETAC/OS-90/223 - Page 30

31 pppppppp AAAAAA RRRRRRRR PpPPPPPPP TTTTTTTTTT AAAAAAAA BBBBBBBBS RRRRRRRRR Pp TTTTTTTTrT PP AA AA BBBBBBBBBB RR RR PP Pp AA AA RR RaTsB BBTB BB PPPPPPPPP AA AA RRRRRRRRR PPPPPpPP TT AAAAAAAAAA BOBBBBBBBB RRIRRRRRR PP AAAAAAAAAA TT RR RR TT BBBB~ BBB B E PPA A RR RR pp TT AA AA s RR B8 RR PP TT AA AA RR BBBBBBBB RR TT BBBBBBBBB B- - USAFETAC/DS-90,223 - Page 31

32 PART B PRECIPITATION, SNOWFALL, SNOW DEPTH SUMMARIES ALL TABLES IN PART B ARE CREATED FROM SUMMARY OF DAY (SOD) DATA. PERCENT OCCURRENCE FREQUENCY. THESE TABLES GIVE THE PERCENT OCCURRENCE FREQUENCY OF PRECIPITATION, SNOWFALL AND SNOW DEPTH. DATA IS SUMMARIZED FOR ALL YEARS COMBINED. SUMMARIES INCLUDE THE PERCENT OF DAYS WITH MEASURABLE AMOUNTS, PERCENT OF DAYS WITH NO AMOUNTS, PERCENT OF DAYS WITH TRACES, AND PERCENT OF DAYS WITH SPECIFIED AMOUNTS. SUMMARIES ALSO PROVIDE AN OBSERVATION COUNT. A VALUE OF ".0" INDICATES ONE OR MORE OCCURRENCES THAT, IN AGGREGATE, AMOUNT TO LESS THAN.05 PERCENT. MONTHLY TOTALS. THESE TABLES GIVE THE TOTAL MONTHLY PRECIPITATION AND SNOWFALL RESPECTIVELY. THEY ARE SUMMARIZED BY MONTH FOR ALL YEARS. THE TABLES ALSO GIVE THE GREATEST AMOUNTS, LEAST AMOUNTS, MEAN, MEDIAN, STANDARD DEVIATIONS, AND TOTAL AVAILABLE OBSERVATIONS. AN ASTERISK (*) INDICATES A VALUE FOR A MONTH FOR WHICH LESS THAN 90% OF THE DATA ARE AVAILABLE. AN ASTERISK ALSO DENOTES A YEAR(S) WITH ONE OR MORE MISSING AND/OR INCOMPLETE MONTHS. INCOMPLETE MONTHS/YEARS ARE NOT INCLUDED IN STATISTICAL COMPUTATIONS. NOTE: LEAST AMOUNTS ARE DERIVED FROM COMPLETE MONTHS/YEARS ONLY. ".00" MEANS NO PRECIPITATION FOR THE MONTH, ".0" MEANS NO SNOWFALL FOR THE MONTH. DAILY EXTREMES. THESE TABLES GIVE THE MAXIMUM DAILY REPORTED AMOUNTS (BY INDIVIDUAL YEAR- MONTH) FOR PRECIPITATION, SNOWFALL, AND SNOW DEPTH, RESPECTIVELY. THEY SHOW THE GREATEST AMOUNTS FOR EACH MONTH AND THE TOTAL NUMBER OF AVAILABLE OBS- ERVATIONS FOR EACH MONTH AND YEAR. AN ASTERISK (*) INDICATES A MONTH FOR WHICH LESS THAN 90% OF DATA ARE AVAILABLE. AN ASTERISK ALSO DENOTES A YEAR(S) WITH ONE OR MORE MISSING AND/OR INCOMPLETE MONTHS. ".00" MEANS NO PRECIPITATION FOR THE MONTH, ".0" MEANS NO SNOWFALL FOR THE MONTH, AND "0" MEANS NO SNOW DEPTH FOR THE MONTH. SNOWFALL/SNOW DEPTH--FIRST AND LAST DAYS OF OCCURRENCE BY SNOW YEAR. THIS SUMMARY GIVES THE FIRST AND LAST OCCURRENCES OF SNOWFALL AND SNOW DEPTH FOR THE SNOW-YEAR DURING THE PERIOD OF RECORD. FOR THIS SUMMARY, THE SNOW-YEAR IS CONSIDERED TO RUN FROM 1 AUGUST TO 31 JULY. TABLES SUMMARIZE THE DATA BY SNOW-YEAR, BY MONTH, AND BY DAY. THE FIRST (OR LAST) ENTRY IN COLUMN 69 OF AWS FORMS 10/IDA (OR EQUIVALENT) AS EITHER A TRACE OR A MEASURABLE AMOUNT DEFINES THE FIRST (OR LAST) SNOWFALL FOR THE THE YEAR. THE FIRST (OR LAST) ENTRY IN COLUMN 69 OTHER THAN ".0" OR "TRACE" DEFINES THE FIRST (OR LAST) MEASURABLE SNOWFALL. FINALLY, THE 1200 GMT ENTRY COLUMN 70 OF AWS FORM 10/IDA (OR EQUIVALENT) DEFINES THE FIRST (OR LAST) OCCURRENCE OF SNOW DEPTH. THE LAST SNOW DEPTH IS CONSIDERED THE LAST SNOW MELT. THIS SUMMARY IS NOT PROVIDED WHEN NO SNOWFALL OCCURS DURING THE GIVEN POR. B -1-2 USAFETAC/DS-90/223 - Page 32

33 NOTE 1. IF THE MINIMUM AMOUNT RECORDED IN THE MONTHLY TOTALS OR DAILY EXTREMES IS A TRACE, THE WORD "TRACE" WILL APPEAR IN THE APPROPRIATE COLUMN. NOTE 2. TABLES INCLUDE STATISTICAL DATA ONLY WHEN FIVE (5) OR MORE SETS OF COMPLETE MONTHS ARE AVAILABLE. NOTE 3. THE OBSERVATION COUNTS JR THE STATION HISTORY MIGHT PROVIDE CLUES AS TO WHY CERTAIN DATA ARE MISSING. FOR EAMPLE, ONLY A FEW MISSING OBS- ERVATIONS MIGHT IMPLY MISSING DATA BECAUSE OF EQUIPMENT MALFUNCTION, BUT MORE THAN SEVERAL MISSING OBSERVATIONS USUALLY MEANS THE STATION IS (OR HAS BEEN) CLOSED. NOTE 4. IN DAILY AND MONTHLY AMOUNTS SUMMARIES, THE LAST ENTRY ON THE PAGE GIVES THE GREATEST AMOUNT FOR THE PERIOD OF RECORD. NOTE 5. BEFORE JANUARY 1956, SNOWFALL OCCURRENCES IN THE SUMMARY OF DAY INCLUDED HAIL. NOTE 6. SNOW DEPTH REPORTING TIMES FOR USAF, NAVY AND CIVIL STATIONS ARE AS FOLLOWS: AIR FORCE NAVY AND NATIONAL WEATHER SERVICE THROUGH 1945: 0800 LST THROUGH JUN 1952: 0030 GMT JAN 1946 TO MAY 1957: 1230 LST JUN 1952 TO MAY 1957: 1230 GMT JUN 1957 TO PRESENT: 1200 GMT JUN PRESENT: 1200 GMT NOTE HOUR PRECIPITATION (INCLUDING SNOWFALL AND SNOW DEPTH) VALUES DERIVED FROM PART TIME PERIODS MAY NOT REFLECT TRUE 24-HOUR AMOUNTS. RECORDED AMOUNTS FOLLOWING WEEKENDS AND/OR HOLIDAYS FREQUENTLY REPRESENT AMOUNTS MEASURED FOR PERIODS GREATER THAN 24 HOURS. IN ADDITION, 24-HOUR AMOUNTS MAY NOT REPRESENT THE STANDARD CLIMATOLOGICAL 24-HOUR "MIDNIGHT TO MIDNIGHT" AMOUNT. DATA FROM PART TIME PERIODS MAY NOT ACCURATELY REFLECT NIGHTTIME PRECIPITATION EVENTS. CONVERSIONS: I INCH = MILLIMETERS - 1 MILLIMETER = INCHES B - 3 USAFETAC/DS-90/223 - Page 33

34 OPERATING LOCATION 'A' PERCENTAGE FREQUENCY OF OCCURRENCE OF PRECIPITATION IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL AMOUNTS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN (INCHES).i NONE TRACE OVER I DAYS WITH MEAS AMTS TOTAL NO. OF OBSERVATIONS B-2-1 USAFETAC/DS-90/223 - Page 34

35 OPERATING LOCATION 'A' TOTAL MONTHLY PRECIPITATION AMOUNTS IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL.I *.72*.36* 5.94* 3.58* 2.21* 5.95* 5.70* 1.40* 4.29*.61*.09* 33.71* 74.70*.66* 1.10* 2.57* 4.29* 5.35* 17.18* 6.57*.52* 4.27*.35* 1.53* 45.09* 75.61*.37* 2.38* 4.43* 3.01* 6.15* 12.39* 1.68* 6.76* 2.37* 3.72* 1.12* 44.99* 76.02*.00*.52* 3.37* 1.34* 4.22* 1.32* 9.59* 1.45* 1.54*.57* 1.16* 25.10* 77.05* TRACE* 2.18* 6.29* 2.08* 2.39* 3.15* 4.22* 6.20*.60* 3.79*.74* 31.69* 78.37*.99* *.40* 16.95* 6.41* 5.50* 2.21* 3.25* 1.42*.50* 40.14* 79.69* 2.14* 1.96* 3.08* 5.68* 5.26* 5.49* 7.16* 6.28*.16*.18*.81* :3.89* *.04* 2.19* 5.75* 3.43* 2.83* 11.59* 7.18* 5.67* 3.06* 1.44*.28* 44.71* 81.04*.13*.59* 1.52* 1.44* 6.84* 4.21* 7.45* 14.51*.45* 1.07*.53* 38.78* 82.33* 1.01* 1.77* 2.04*.96* 2.19* 5.66* 16.25*.73*.44* 2.76*.42* 34.56* 83.72*.89* 2.88* 3.42* 1.44* 4.66* 10.90* 4.68* 9.15* 2.42*.14*.11* 41.41* 84.10*.50*.67* 5.37* 2.66* 7.14* 16.84* 8.41* 10.47*.57* 2.28*.15* 55.16* 85 TRACE* 1.18* 3.08* 3.17* 3.94* 7.07* 7.14* 14.07* 10.00* 4.91* 1.67* 1.16* 57.39* 86 TRACE*.41* 2.35* 1.30* 3.82* 9.50* 5.51* 8.75* 5.36* 3.26*.39* 1.44* 42.09* * 1.97* 2.46* 1.62* * 11.87* 15.73*.65* 1.47* 2.40*.04* 49.00* 88.58*.20* 1.95* 2.35* 3 1,+* 3.25* 11.03* 2.57* 2.48*.14*.12*.24* 28.05* * 4.30* 4.10* 12.70* B - 2-2A USAFETAC/DS-90/223 -Page 35

36 OPERATING LOCATION 'A' TOTAL MONTHLY PRECIPITATION AMOUNTS IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL... I......,... LEAST.88 GREATEST MEAN MEDIAN SD... TOTAL OBS THE GREATEST VALUE OF OCCURRED ON 07/74 NOTE: *THE VALUE IS BASED ON A MONTH WITH LESS THAN 90% OF THE DATA AVAILABLE FOR THE MONTH B - 2-2B USAFETAC/DS-90/223 - Page 36

37 OPERATING LOCATION 'A' EXTREME DAILY PRECIPITATION AMOUNTS IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL... SI *.24*.12* * 1.24* 3.16* 3.60*.66* 1.47*.28*.09* 3.60* 74.70*.53*.50* 1.51* 2.32* 2.76* 5.76* 5.02*.38* 1.77*.27*.65* 5.76* 75.24*.30*.85* 1.06* 1.01* 2.12* 2.54*.44* 1.52* 1.34* 1.64*.51* 2.54* 76.02*.00*.20* 1.12* 1.03* 2.95*.32* 2.18*.64*.73*.19*.35* 2.95* 77.04* TRACE*.71* 2.20*.91* 1.31* 1.08* 2.81* 1.97*.48* 2.60*.48* 2.81* 78.35*.50*.37.93*.32* 6.50* 1.87* 2.53*.67* 2.00*.90*.47* 6.50* 79.27* 1.16* 1.10* 2.00* 1.93*.98* 2.85* 3.35* 1.89*.13*.10*.37* 3.35* 80.79*.03*.98* 2.04* 1.18* 1.83* 3.06* 2.06* 2.99* 1.52* 1.29*.27* 3.06* 81.02*.05*.33*.79* 1.16* 1.93* 1.95* 4.10* 11.09*.18*.88*.28* 11.09* 82.26*.30*.45*.82*.51* 1.17* 1.69* 8.91*.65*.20* 1.11*.26* 8.91* 83.39*.61*.96*.68*.45* 2.49* 2.63* 1.42* 4.11* 2.00*.05*.10* 4.11* 84.10*.29*.32* 2.40* 1.57* 3.04* 4.90* 4.96* 8.36*.42* 1.36*.08* 8.36* 85 TRACE*.67*.81* 1.48* 2.14* 4.46* 3.81* 7.03* 4.07* 2.31*.98* * 86 TRACE*.36* 1.24* * 4.23* 1.82* 2.29* 4.75*.96*.26*.70* 4.75* * 1.11*.33*.61* 3.55* 4.72* 5.30*.39* 1.40* 1.39*.04* 5.30* 88.36*.14* 1.31* 1.55*.75* 4.39* 1.14* 1.80*.12*.09*.11* 4.39* * 1.98* 2. * 2.37* GREATEST I1--11,... I... TOTAL OBS THE GREATEST VALUE OF OCCURRED ON 09/03/81 NOTE: *THE VALUE IS BASED ON A MONTH WITH LESS THAN 90% OF THE DATA AVAILABLE FOR THE MONTH B USAFETAC/DS-90/223 -Page 37

38 II OPERATING LOCATION 'A' PERCENTAGE FREQUENCY OF OCCURRENCE OF SNOWFALL IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL AMOUNTS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN (INCHES).I... NONE TRACE OVER DAYS WITH MEAS AMTS TOTAL NO. OF OBSERVATIONS B- 3-1 USAFETAC/DS-90/223 - Page 38

39 OPERATING LOCATION 'A' TOTAL MONTHLY SNOWFALL AMOUNTS IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL...,... YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL... i.1*.0 * TRACE *.. 0*... * 73.I*.0" TRACE*.0".0".0*.0*.0".0".0" TRACE*.0".I* * 2.2* TRACE*.0*.0*.0*.0*.0*.0*.0* TRACE* 2.9* 12.1* * 1.0- TRACE*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 3.3* 76 TRACE*.0* 1.7*.0*.0*.0*.0*.0*.0*.0*.2*.1* 2.0* 77 TRACE* TRACE* TRACE*.0*.0*.0*.0*.0*.0*.0* TRACE* TRACE* TRACE* * 1.0* TRACE.0*.0*.0*.0*.0*.0*.0* TRACE* TRACE* 3.9* * TRACE*.0*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 2.0* 80 TRACE* TRACE*.0*.0*.0*.0*.0*.0*.0*.0*.0*.1*.1* 81.4".4*.0*.0*.0*.0*.0*.0*.0*.0*.0*.7* 1.5* 82.1* 3.2*.0*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 3.3* * 1.2* 1.2*.0*.0*.0*.0*.0*.0*.0*.1* 1.0* 7.3* * TRACE* 2.6*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 3.6* 85 TRACE* TRACE* TRACE*.0*.0*.0*.0*.0*.0*.0*.0* 1.1* 1.1* 86 TRACE* 4.1*.0*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 4.1* 87.9* 4.4*.0*.0*.0*.0*.0*.0*.0*.0*.0*.4* 5-7* 88 TRACE*.0* 1.5*.0*.0*.0*.0*.0*.0*.0*.0*.1* 1.6* *.0* 1.5* 2.9* B - 3-2A USAFETAC/DS-90/223 " Page 39

40 OPERATING LOCATION 'A' TOTAL MONTHLY SNOWFALL AMOUNTS IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL LEAST TRACE GREATEST MEAN MEDIAN SD TOTAL OBS THE GREATEST VALUE OF 7.0 OCCURRED ON 01/74 NOTE: *THE VALUE IS BASED ON A MONTH WITH LESS THAN 90% OF THE DATA AVAILABLE FOR THE MONTH B - 3-2B I> UJzAFETAC/DS-90/223 - Page 40

41 OPERATING LOCATION 'A' EXTREME DAILY SNOWFALL AMOUNTS IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL 73.1*.0* TRACE*.0*.0*.0*.0*.0*.0*.0* TRACE*.0*.I* * 2.2* TRACE*.0*.0*.0*.0*.0*.0*.0* TRACE* 2.8* 7.0* * 1.0* TRACE*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 1.2* 76 TRACE*.0* 1.7*.0*.0*.0*.0*.0*.0*.0*.2*.1* 1.7* 77 TRACE* TRACE* TRACE*.0*.0*.0*.0*.0*.0*.0* TRACE* TRACE* TRACE* * 1.0* TRACE.0*.0*.0*.0*.0*.0*.0* TRACE* TRACE* 2.5* * TRACE*.0*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 2.0* 80 TRACE* TRACE*.0*.0*.0*.0*.0*.0*.0*.0*.0*.1*.1* 81.2*.2*.0*.0*.0*.0*.0*.0*.0*.0*.0*.7*.7* 82.1* 3.2*.0*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 3.2* * 1.1* 1.2*.0*.0*.0*.0*.0*.0*.0*.1* 1.0* 3.1* * TRACE* 1.2*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 1.2* 85 TRACE* TRACE* TRACE*.0*.0*.0*.0*.0*.0*.0*.0* 1.1* 1.l 86 TRACE* 3.6*.0*.0*.0*.0*.0*.0*.0*.0*.0* TRACE* 3.6* 87.9* 3.7*.0*.0*.0*.0*.0*.0*.0*.0*.0*.4* 3.7* 88 TRACE*.0* 1.0*.0*.0*.0*.0*.0*.0*.0*.0*.1* 1.0* *.3* 1.5* 1.5* GREATEST TOTAL OBS THE GREATEST VALUE OF 7.0 OCCURRED ON 01/21/74 NOTE: *THE VALUE IS BASED ON A MONTH WITH LESS THAN 90% OF THE DATA AVAILABLE FOR THE MONTH E USAFETAC/DS-90/223 -Page 41

42 OPERATING LOCATION 'A' PERCENTAGE FREQUENCY OF OCCURRENCE OF SNOW DEPTH IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL AMOUNTS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN (INCHES) NONE TRACE ? OVER DAYS WITH MEAS AMTS TOTAL NO. OF OBSERVATIONS I USAFETAC/DS-90/223 - Page 42

43 OPERATING LOCATION 'A' EXTREME DAILY SNOW DEPTH AMOUNTS IN INCHES FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL TRACE* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* TRACE* 74 7* 1* 0* 0* 0* 0* 0* 0* 0* 0* 0* 1* 7* 75 1* 1* 0* 0* 0* 0* 0* 0* 0* 0* O* TRACE* 1* 76 TRACE* 0* 2* 0* 0* 0* 0* 0* 0* 0* 2* 0* 2* 77 TRACE* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* TRACE* 78 1* TRACE* 0 0* 0* 0* 0* 0* 0* 0* 0* 0* 1* 79 TRACE* TRACE* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* TRACE* 80 TRACE* TRACE* 0* 0* Q* 0* 0* 0* 0* 0* 0* TRACE* TRACE* 81 2* 2* 0* 0* 0* 0* 0* 0* 0* 0* 0* I* 2* 82 0* 2* 0* 0* 0* 0* 0* 0* 0* 0* O* TRACE* 2* 83 1* 2* TRACE* 0* 0* 0* 0* 0* 0* 0* 1* 1* 2* 84 TRACE* 0* 1* 0* 0* 0* 0* 0* 0* 0* 0* TRACE* 1* 85 TRACE* 0* 0* 0* 0* 0* 0* C* 0* 0* 0* 0* TRACE* 86 TRACE* 3* 0* 0* 0* 0* 0* 0* 0* 0* 0* 0* 3* 87 1* 4* 0* 0* 0* 0* 0* 0* 0* * O* TRACE* 4* 88 TRACE* 0* 1* 0* 0* 0* 0* 0* 0* 0* 0* 0* 1* 89 0* 0* 0* 0* I... GREATEST I... TOTAL OBS THE GREATEST VALUE OF 7 OCCURRED ON 01/21/74 NOTE: *THE VALUE IS BASED ON A MONTH WITH LESS THAN 90% OF THE DATA AVAILABLE FOR THE MONTH B USAFETAC/DS-90/223 Page 43

44 OPERATING LOCATION 'A' FIRST AND LAST DAYS OF OCCURRENCE BY SNOW-YEAR FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: SNOW-YEAR:... 1 AUG - 31 JUL FIRST FIRST FIRST LAST SNOWFALL LAST MEASURABLE MEASURABLE LAST SNOWFALL MEASURABLE MEASURABLE SNOW-YEAR SNOWFALL SNOW DEPTH SNOWFALL SNOW DEPTH I JAN 02 JAN 26 MAR 10 JAN NOV 19 JAN 21 JAN 21 MAR 12 FEB 05 FEB NOV 21 DEC 17 DEC 18 MAR 01 FEB 19 FEB DEC 20 MAR 03 MAR 03 MAR 23 MAR 03 MAR NOV 17 NOV 17 NOV 17 MAR 24 DEC 08 NOV NOV 29 JAN 03 JAN 03 MAR 22 FEB 01 JAN NOV 28 JAN 31 FEB 28 JAN DEC 27 FEB DEC 04 DEC 23 JAN 15 FEB 20 FEB 17 FEB DEC 31 DEC 31 DEC 31 FEB 05 FEB 04 FEB DEC 17 JAN 05 JAN 18 MAR 14 MAR 14 FEB NOV 17 NOV 17 NOV 17 MAR 21 MAR 21 MAR DEC 18 MAR DEC 02 DEC 23 FEB 18 FEB 18 FEB 18 FEB DEC 29 JAN 12 JAN 12 FEB 17 FEB 03 FEB DEC 03 DEC 03 MAR 07 MAR 17 MAR 17 MAR DEC 29 DEC 29 MAR 06 MAR 06 MEDIAN-DATE DEC 04 DEC 31 JAN 13 MAR 10 FEB 17 FEB USAFETAC/DS-90/223 - Page 44 Lmnmna n/ ~l lli / i ~~''

45 PPPPPPPP AAAAAA RRRRRRRR TTTTTTTTTT CCCCCC PPPPPPPPP AAAAAAAA RRRRRRRRR TTTTTTTTTT cccccccc pp Pp AA AA RR RR TT cc cc PP PP AA AA RR RR TT cc PPPPPPPPP AA AA RRRRRRRRR TT cc PPPPPPPP AAAAAAAAAA RRRRRRRR TT cc PP PP AAAAAAAAAA AA AA RR RR RR RR TT TT cc cc cc PP AA AA RR RR IT CCCCCCCC PP AA AA RR RR TT CCCCCC c-- USAFETAC/DS-90/223 -Page 45

46 PART C SURFACE WIND SUMMARIES PEAK WINDS. THESE TABLES ARE CREATED FROM SUMMARY OF DAY DATA. SPEEDS ARE IN KNOTS. DIRECTIONS ARE TO 16 COMPASS POINTS FROM THE BEGINNING OF PERIOD OF RECORD THROUGH JUNE 1968, BUT IN JULY 1968, ALL STATIONS EXCEPT THOSE OF THE NATIONAL WEATHER SERVICE STARTED RECORDING DIRECTIONS IN TENS OF DEGREES. DATA IS SUMMARIZED BY MONTH FOR EACH YEAR FOR THE ENTIRE PERIOD OF RECORD AVAILABLE. GIVEN: THE GREATEST MONTHLY VALUE FOR ALL YEARS COMBINED, THE GREATEST YEARLY VALUE FOR ALL YEARS COMBINED, AND THE DATE OF THE ABSOLUTE PEAK WIND RECORDED FOR THE ENTIRE PERIOD OF RECORD. AN ASTERISK (*) INDICATES A VALUE FOR A MONTH FOR WHICH LESS THAN 90% OF THE DATA ARE AVAILABLE. AN ASTERISK ALSO DENOTES A YEAR(S) WITH ONE OR MORE MISSING AND/OR INCOMPLETE MONTHS. PEAK WINDS--PERCENT OCCURRENCE FREQUENCY. ALSO FROM SUMMARY OF DAY DATA. DATA IS SUMMARIZED BY MONTH, FOR ALL YEARS COMBINED, FOR ELEVEN WIND SPEED GROUPS. THE 1-4 KNOT SPEED GROUP INCLUDES CALM WINDS. IF THE PEAK WIND IS REPORTED FOR A PARTICULAR DAY AS "CALM," THAT COUNT GOES INTO THE "1-4 KNOT" CATEGORY. TABLES INCLUDE MEANS, MEDIANS, AND TOTAL OBSERVATION COUNTS. THE VALUES IN THIS SUMMARY ACCOUNT FOR A PEAK WIND BEING RECORDED FOR EACH DAY OF EACH MONTH. WIND DIRECTION VS WIND SPEED--PERCENT OCCURRENCE FREQUENCY. THESE TABLES ARE CREATED. THEY SUMMARIZE THE DATA AS FOLLOWS: - BY EIGHT 3-HOUR STANDARD TIME PERIODS FOR EACH MONTH (ALL YEARS COMBINED). - BY MONTH (ALL YEARS AND ALL HOURS COMBINED). BY YEAR (ALL YEARS AND ALL HOURS COMBINED). THESE TABLES GIVE A BIVARIATE DISTRIBUTION OF THE PERCENT OCCURRENCE FREQUENCY (POF) FOR ELEVEN WIND SPEED GROUPS VERSUS TWELVE WID DIRECTION SECTORS GIVEN IN 30 DEGREE INCREMENTS. "CALM" AND "VARIABLE" WINDS ARE GIVEN SEPARATELY. CARDINAL WIND DIRECTIONS (N,E,S,W) APPEAR FOR REFERENCE. TOTAL PERCENTAGES, MEANS, AND MEDIANS FOR EACH SECTOR, ALONG WITH TOTAL OBS- ERVATION COUNTS, ARE PRINTED BELOW EACH SUMMARY. ALSO PROVIDED: A BIVARIATE DISTRIBUTION OF WIND DIRECTION VERSUS WIND SPEED FOR SPECIFIED CEILING/VISIBILITY CONDITIONS. THESE CONDITIONS ARE: WHEN THE VISIBILITY IS GREATER THAN OR EQUAL TO 1/2 MILES (0800 METERS) THE CEILING MUST BE GREATER THAN OR EQUAL TO 200 FEET BUT LESS THAN 1500 FEET. IF THIS CONDITION IS NOT MET, THEN THE FOLLOWING CONDITION IS TESTED: WHEN THE CEILING IS GREATER THAN OR EQUAL TO 200 FEET, THE VISIBILITY MUST BE GREATER THAN OR EQUAL TO 1/2 (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS). CONVERSION: 1 KNOT = METERS PER SECOND C USAFETAC/DS-90/223 - Page 46

47 USAFETAC/DS-90/223 -Page 47

48 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED STATION NUMBER: STATION NAME: CAMP WALKR/A-805(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: JAN HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) j % WIND WIND (N) (E) (S) (W) VARIABLE I CALM ////////////////////////////////////////////////////////////////////////// 33.3 /////// TOTALS j TOTAL NUMBER OF OBSERVATIONS 3 C -4-1 USAFETAC/DS-90/223 - Page 48

49 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JAN HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) (E) (5) (W) VARIABLE I CALM I///////////////////////////////////////24.5 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 554 C USAFETAC/DS-90/223 - Page 49

50 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JAN HOURS: WIND SPEED IN KNOTS DIRECTION j GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I/////////////////////i//i////i///i/////////////////////////// ///// 17.4 /////I TOTALS I TOTAL NUMBER OF OBSERVATIONS 610 C -4-3 USAFETAC/DS90/223 - Page 50

51 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOO OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: JAN HOURS: I... I... WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND... I.... (N) (E) 080-I (s) (W) VARIABLE I CALM I//////////////////////////////////////////////////////////////////////// 6.9 ////// TOTALS TOTAL NUMBER OF OBSERVATIONS 611 C USAFETAC/DS-90/223 - Page 51

52 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JAN HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I///////// /////////////////////////////////// ////////////////////// 7.4 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 606 C USAFETAC/DS-90/223 - Page 52

53 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED STATION NUMBER: STATION NAME: CAMP WALKER/A-B05(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: JAN HOURS: WIND SPEED IN KNOTS DIRECTION j GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM III/I//II//I/II//IIII/III/IIIIII/IIIIIII 5.9 IlHHl TOTALS I TOTAL NUMBER OF OBSERVATIONS 17 C USAFETAC/DS-90/223 - Page 53

54 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JAN HOURS: Al WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM I///////////////////////////////////// 13.8 /////// TOTALS j TOTAL NUMBER OF OBSERVATIONS 2401 C -4 7 USAFETAC/DS-90/223 - Page 54. mw mmmmmmmmm m m'm'' m m m mm m mmmmmad

55 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JAN HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) I (w) VARIABLE I CALM I///////////////////////////////////////40.4 ////// TOTALS oo TOTAL NUMBER OF OBSERVATIONS 208 C -4-8 USAFETAC/DS-90/223 - Page 55

56 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: FEB HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND... (N) (E) (S) (W) VARIABLE I CALM I//I/////////////////////////////////////////////////////////////////// //////// TOTALS [ TOTAL NUMBER OF OBSERVATIONS 1 C USAFETAC/DS-90/223 - Page 56

57 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: FEB HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) (S) (w) VARIABLE CALM ///////////////////////////////////////////////////////////////////// 25.8 ///////I TOTALS TOTAL NUMBER OF OBSERVATIONS 524 C USAFETAC/DS-90/223 - Page 57

58 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION 4ERSUS WIND SPEED LST TO UTC: - 9 MONTH: FEB HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM l///"//// / //"//// / "'"// "/// ""// /// /////// 17.2 ///////II// TOTALS f TOTAL NUMBER OF OBSERVATIONS 574 C USAFETAC/DS-90/223 - Page 58

59 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: FEB HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) (s) (W) VARIABLE CALM J// i/i/ /I/ I//////////////////////////// 8.2 I/I//I/I TOTALS I TOTAL NUMBER OF OBSERVATIONS 571 C USAFETAC/DS-90/223 " Page 59

60 A-: T: 1 fn T ==mm,,,,,. m,, OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: FEB HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VA I B E i62g'''i616 VARIABLE I CALM I//////////////////////////////////////////////////////////////////// // 7.0 ////// TOTALS TOTAL NUMBER OF OBSERVATIONS 561 C USAFETAC/DS-90/223 - Page 60

61 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: FEB HOURS: ALL...,... WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND...,...,... (N) (E) (s) (W) VARIABLE CALM I///////// / /////////////////////////////////////////////////////// 14.3 I////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 2238 C USAFETAC/DS-90/223 Page 61 m - d mmlmm~m~~m l-.oaks-n~

62 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: FEB HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN...,... (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I//////////////////////////////////////////////////////////////////// 40.9 ///////I TOTALS I TOTAL NUMBER OF OBSERVATIONS 215 C USAFETAC/DS-90/223 - Page 62

63 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAR HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) (S) (W) VARIABLE CALM I///////////////////////////////////////28.5 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 578 C USAFETAC/DS-90/223 - Page 63

64 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAR HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM I/////////////////////////////////////////////////////// ////// 15.3 /////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 648 C USAFETAC/DS-90/223 - Page 64

65 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAR HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)j % WIND WIND (N) (E) (S) (W) VARIABLE i CALM I/////////////////////////////////////////////////////////// ////// 8.4 //////// TOTALS i TOTAL NUMBER OF OBSERVATIONS 644 C USAFETAC/DS-90/223 - Page 65

66 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAR HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE i CALM I""""""//"""""/"""/'/"/"""//////'///////////////// 6.5 /////// TOTALS TOTAL NUMBER OF OBSERVATIONS 631 C USAFETAC/DS-90/223 - Page 66

67 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WINiD SPEED LST TO UTC: - 9 MONTH: MAR HOURS: ALL WIND SPEED ;N KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I U.O CALM I///////////////////////////////////////14.3 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 2502 C USAFETAC/DS-90/223 - Page 67 i m - mm'----"a" m mm ' m u o lm ll

68 PERCENTAGE FREOUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAR HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM,//iu/////////i///////i////i///i/////ii//i/////////////i/////////////////////34.3 /////// TOTALS TOTAL NUMBER OF OBSERVATIONS 230 C USAFETAC/DS-90/223 - Page 68

69 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: APR HOURS: DIRECTION I WIND SPEED IN KNOTS GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) (E) (S) (W) VARIABLE CALM {///////////////////////////////////////30.8 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 13 C USAFETAC/DS-90/223 Page 69

70 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC! - 9 MONTH: APR HOURS: WIND SPEED IN KNOTS DIRECTION j P GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM I//////////i//////////////////// //////////// ////////////////////// 30.7 /////// TOTALS J TOTAL NUMBER OF OBSERVATIONS 551 C USAFETAC/DS-90/223 - Page 70

71 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: APR HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)j % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I//////////////////////////////////////////////////////////// 16.1 ///// TOTALS I TOTAL NUMBER OF OBSERVATIONS 633 C USAFETAC/DS-90/223 - Page 71

72 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: APR HOURS: ,...o... WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) C 'JARIABLE CALM I///////// /iii/////////////////i////i//////// 7.1 I//////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 632 C USAFETAC/DS'90/223 - Page 72

73 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: APR HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND N) (E) (S) (w) VARIABLE TOTALS c TOTAL NUMBER OF OBSERVATIONS 614 C USAFETAC/DS-90/223 - Page 73

74 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: APR HOURS: DIRECTION I WIND SPEED IN KNOTS GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM ////l////////l//////////l// //////////// 8.6 I///// TOTALS I TOTAL NUMBER OF OBSERVATIONS 35 C I... USAFETAC/DS-90/223 - Page 74

75 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: APR HOURS: ALL WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) L (s) (w) VARIABLE CALM /y ///////////////////////////I //////////////////////////////////// 14.3 //////////// TOTALS TOTAL NUMBER OF OBSERVATIONS 2478 C USAFETAC/DS-90/223 - Page 75

76 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: APR HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET....,... I WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN...,... (DEGREES) I % WIND WIND...,... (N) (E) (S) (W) VARIABLE CALM I////////////i////////////////////////////////////////////////////// 26.1 /////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 199 C USAFETAC/DS-90/223 - Page 76 i -.e e... w m u m mj~lll leell

77 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAY HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) (S) (W) VARIABLE I CALM Il~lllllllll/lllllllllllllllllll//ll/l/l40.0 I/III/ TOTALS TOTAL NUMBER OF OBSERVATIONS 50 C USAFETAC/DS-90/223 - Page 77

78 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAY HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) (S) (W) VARIABLE CALM i/////////////////////////////////////////////////////////////// 31.6 /////// TOTALS TOTAL NUMBER OF OBSERVATIONS 535 C USAFETAC/DS-90/223 - Page 78

79 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAY HOURS: WIND SPEED IN KNOTS DIRECTION j GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND...,... (N) (E) (S) (W) VARIABLE CALM ///// //////////HI/////////////////////16.0 1/I//1 TOTALS TOTAL NUMBER OF OBSERVATIONS 626 C USAFETAC/DS-90/223 - Page 79

80 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAY HOURS: o,...,...,..., WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)j % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I/ii//i////////////////// ////'////////i/////////// 6.4 //////- TOTALS j TOTAL NUMBER OF OBSERVATIONS 626 C USAFETAC/DS-90/223 - Page 80

81 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: MAY HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM I/////////////////////////////////////// 4.4 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 548 C USAFETAC/DS-90/223 - Page 81

82 i OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION -RSUS WIND SPEED LST TO UTC: - 9 MONTH: MAY HOURS: ALL WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND...,... (N) (E) (S) , (W) ""V.R... " i... i....i..."... """... VARIABLE I CALM I//////////////////////////////I////////14.5 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 2428 C USAFETAC/DS-90/223 - Page 82 I ,,,m m,, " ' ''

83 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MA, 89 LST TO UTC: - 9 MONTH: MAY HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MiIE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 ET. WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WINeD WIND (N) (E) (S) 17C , (W) T 3.0 VARIABLE I CALM I//////i/i/////////////////,////////////27.3 ////// TOTALS TOTAL NUMBER OF ORSERVATIONS 150 C USAFETAC/DS-90/223 - Page 83

84 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUN HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I% WIND WIND (N) I (E) I I (S) I j (w) I I VARIABLE TOTALS, T0TA NUMBER OF OBSERVATIONS 66 C USAFETAC/DS-90/223 - PAge 84

85 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUN HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) u "ARIABLE CALM I///////////////////////////////////////27.. /i/' TOTALS t -. TOTAL NUMBER OF OBSERVATIONS 594 C USAFETAC/DS-90/223 - Page 85

86 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUN HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) ( (E) (S) (W) VARIABLE CALM I / '///// ///// //////// /////////////// ////////////// 15.6 ////// I TOTALS TOTAL NUMBER OF OBSERVATIONS 636 C USAFETAC/DS-90/223 - Page 86

87 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUN HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) IJ (E) (S) (W) VARIABLE CALM I/////////////////////////////////////// 9.1 ////// TOTALS TOTAL NUMBER OF OBSERVATIONS 639 C USAFETAC/DS-90/223 - Page 87

88 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED STATION NUMBER: STATION NAME: CAMP WALKER/A-8O5(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: JUN HOURS: WIND SPELu IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) ln (s) (w) VARIABLE CALM i/// ///////////////////////// ///////////////// 4.6 /////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 586 C USAFETAC/DS-90/223 Page 88

89 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUN HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM IIIIIIII /1111! IIIII/ TOTALS I TOTAL NUMBER OF OBSERVATIONS 38 C USAFETAC/DS-90/223 - Page 89

90 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOO OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: JUN HOURS: ALL WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM 1////////4///////////////////////////////I.5 TOTALS TOTAL NUMBER OF OBSERVATIONS C USAFETAC/DS-90/223 - Page 90

91 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUN HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) I VARIABLE CALM l''''////'""'"'"""""///ii/i/iiii/i'ii/iii/i/iii/i''i/iii////////////23.8 /////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 298 C USAFETAC/DS-90/223 - Page 91

92 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WINO DIRECTION VERSUS WIND SPEED STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERICjU OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: JUL HOURS: WIND SPEED IN KNOTS DIRECTION j GE 65 CITAL MEAN MEDIAN (DEGREES) I WIND WIND (N) I (E) I (S) j (W) VARIABLE CALM I/I/II//I//I/I//I////I//////I/////I////I 38.3 //u// TOTALS I TOTAL NUMBER OF OBSERVATIONS 47 C USAFLIAC/DS-90/223 Page 92

93 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUL HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) f (S) (W) VARIABLE CALM I///////////////////////////////////////31.2 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 568 C USAFETAC/DS-90/223 - Page 93

94 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUL HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) I (E) f (S) (W) VARIABLE CALM I///////////////// / I//////// //// ////////,///////// /// 16.7 ////// / TOTALS i TOTAL NUMBER OF OBSERVATIONS 629 C I USAFETAC/DS-90/223 - Page 94

95 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONiH: JUL HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) J % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I///i/////////////// ///////i i////// ////i////// 7.6 ////I TOTALS I TOTAL NUMBER OF OBSERVATIONS 632 C USAFETAC/DS-90/223 - Page 95

96 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUL HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) ) '.0 (S) (W) VAR IAQI E CALM I//////I///////////////////////////////// ////////// 6.2 /////,' TOTALS TOTAL NUMBER OF OBSERVATIONS 567 C USAFETAC/DS-90/223 - Page 96

97 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUL HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) (N) (E) (S) (W) VARIABLE... VARIABLE CALM I///////////// ////////I///J/IIii'Ii''///// /////////// /// 5.0 //////I TOTALS TOTAL NUMBER OF OBSERVATIONS 20 C USAFETAC/DS-90/223 - Page 97

98 USAFETAC. ASHEVILLE NC PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUL HOURS: ALL WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM I/II/III//11/IIIIIIIII/I/I//IIIIIIII/IIIIIIIIIII/IIIIIIIIIIIIIIIIIIIIIIIII 15.6 IIIIIIIIIII/ TOTALS I TOTAL NUMBER OF OBSERVATIONS 2465 C USAFETAC/DS-90/223 - Page 98

99 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: JUL HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE... VARIABLE CALM I///////////////////////////////////////27.7 ////// TOTALS j TOTAL NUMBER OF OBSERVATIONS 328 C USAFETAC/DS-90/223 " Page 99

100 OPERATING LOCATION -A' PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: AUG HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I% WIND WIND (N) j (E) (S) j (W) I I VARIABLE CALM I//////I/I/I///////////''Il///////I////I 47.8 I/ii// TOTALS I TOTAL NUMBER OF OBSERVATIONS 46 C USAFETAC/DS-90/223 - Page 100

101 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: AUG HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (N) (E) (S) (W) VARIABLE CALM I///////////////////////////////////////35.8 ////// TOTALS I U TOTAL NUMBER OF OBSERVATIONS 590 C USAFETAC/DS-90/223 - Page 101

102 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: AUG HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND...,... (N) (E) (S) (W) VARIABLE CALM I/////////////////////////////////////////////////////////////////////// 17.9 ////// TOTALS TOTAL NUMBER OF OBSERVATIONS 654 C USAFETAC/DS-90/223 - Page 102 a m m mmh bl " ml k

103 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: AUG HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND......,...,... (N) (E) (S) (w) VARIABLE I CALM I/////////////////////////////////////// 6.2 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 650 C USAFETAC/DS-90/223 - Page 103

104 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: AUG HOURS: WIND SPEED IN KNOTS DIRECIION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) (s) (W) VARIABLE CALM I//////////////////////////////// /////////////////// / 3.3 /////// TOTALS TOTAL NUMBER OF OBSERVATIONS 569 C USAFEIAC/DS-90/223 " Page 104

105 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: AUG HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) (S) (W) VARIABLE I CALM ///////////i/iii/jiiji/i / / / //////////////// 7.4 //// TOTALS TOTAL NUMBER OF OBSERVATIONS 27 C USAFETAC/DS-90/223 - Page 105

106 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: AUG HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND...,... (N) (E) (S) (W) VARIABLE I CALM I/////////////////////////I/////////////25.0 ////// TOTALS TOTAL NUMBER OF OBSERVATIONS 4 C USAFETAC/DS-90/223 - Page 106

107 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: AUG HOURS: ALL WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) I * (E) I I u (S) I I (W) I I , VARIABLE CALM I'''""/""/""/i''i//iii'ii,',,,',, 16.2 I///fI TOTALS TOTAL NUMBER OF OBSERVAT INS 2542 C USAFETAC/DS-90/223 -Page 107

108 USAFr.iAC, ASHEVILLE NC PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WiND DIRECTION VERSUS WIND SPEED STATION NUMBER: STATION NAME: CAMP WALKER/A-8O5(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: AUi HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I / WIND WIND (N) (E) (S) (W) VARIABLE I CALM I/////////////////////////////f///////////////////////// // 40.0 //////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 255 C USAFETAC/DS-90/223 - Page 108

109 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: SEP HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) U (S) (W) VARIABLE I CALM I///////////////////////////////////////56.8 ////// TOTALS I TOTAL NUMBER OF OBS' iations 44 C USAFETAC/DS-90/223 - Page 109

110 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: SEP HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) I (E) (S) (W) VARIABLE I CALM I//////////////////l/////////II/////////43.4 II////////// TOTALS i TOTAL NUMBER OF OBSERVATIONS 560 C USAFETAC/DS-90/223 - Page 110

111 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED STATIN NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: SEP HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) L.0 (E) (S) (W) VARIABLE CALM I/////// //// / ///// ///////////////// 25.4 ////// TOTALS TOTAL NUMBER OF OBSERVATIONS 614 C USAFETAC/DS-90/223 " Page 111 = liim.. i i il m i m i.,,, i Il Ilfi,,..,.u.,.,,mz~z II

112 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WINO SPEED STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD Of RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: SEP HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM /////////////////////////////////////// 9.0 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 613 C USAFETAC/DS-90/223 - Page 112

113 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: SEP HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) (E) (S) tw) VARIABLE CALM I/////////////////////////////// ////"'///////I/////////// 8.0 //////// TOTALS TOTAL NUMBER OF OBSERVATIONS 540 C USAFETAC/DS-90/223 - Page 113

114 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: SEP HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I///// ///////// / /// /////////////////////////////////////////// 26.3 /////// TOTALS TOTAL NUMBER OF OBSERVATIONS 19 C USAFETAC/DS-9g/223 - Page 114

115 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: SEP HOURS: ALL WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM /////////// ///////////////////////////////////////////////////////// 22.1 //////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 2390 C 4-68 USAFETAC/DS-90/223 - Page 115

116 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: SEP HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION j GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM I""/""///// /"// """"////// "// ""/// 36.7 ///////I TOTALS TOTAL NUMBER OF OBSERVATIONS 300 C USAFETAC/DS-90/223 - Page 116

117 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: OCT HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) j (E) I (S) (w) VARIABLE CALM I ii iii iiiii ii/ iii iiii' 'iii i"/i" i"i, 53.3 I///Il TOTALS I TOTAL NUMBER OF OBSERVATIONS 15 C USAFETAC/DS-90/223 -Page 117

118 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: OCT HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) (S) (W) VARIABLE CALM I///////////////////////////////////////44.9 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 546 C USAFETAC/DS-90/223 " Page 118

119 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: OCT HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) (E) (S) (W) VARIABLE CALM I//////////////////////// /////////////////// ///////////////// 26.7 ////// TOTALS TOTAL NUMBER OF OBSERVATIONS 632 c USAFETAC/DS-90/223 - Page 119

120 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: OCT HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I////////////////////////////////////////////////// //////////////////// 12.5 /////// TOTALS TOTAL NUMBER OF OBSERVATIONS 632 C USAFETAC/DS-90/223 - Page 120

121 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: OCT HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (s) (W) VARIABLE CALM I////////////////////////////////////////i////////////////// 8.7 ///// TOTALS I TOTAL NUMBER OF OBSERVATIONS 577 C USAFETAC/DS-90/223 - Page 121

122 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: OCT HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MiEDIAN (DEGREES) % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I///////////////////////////////////////23.1 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 26 C USAFETAC/DS-90/223 - Page 122 A

123 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WINO DIRECTION VERSUS WINO SPEED LST TO UTC: - 9 MONTH: OCT HOURS: WIND SPEED IN KNOTS DIRECTION j L.E 65 TOTAL MEAN MEDIAN (DEGREES)I % WINO WINO (N) (E) (S) (W) I VARIABLE CALM l/////////////i//////i//iiiiiii!i!i/i/ii100.0 I//I/n TOTALS I TOTAL NUMBER OF OBSERVATIONS 1 C USAFETAC/DS-90/223 - Page 123

124 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: OCT HOURS: ALL WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) ;...i VARIABLE CALM I//// ////////////////////////////////////////////////////////////// 23.0 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 2429 C USAFETAC/DS-90/223 - Page 124

125 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: OCT HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM I/////////////////////////I///////////////////////////////////////////// 54.6 /////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 295 C USAFETAC/DS-90/223 - Page 125

126 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED STATION NUMBER: STATION NAME: CAMP WALKER/A-8O5(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: NOV HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)~ % WIND WIND (N) I (E) (S) (W-) I VARIABLE CALM I////A///!III/I///I////////////IlIIII//I 50.0 I///// TOTALS I TOTAL NUMBER OF OBSERVATIONS 2 C USAFETAC/DS-90/223 - Page 126

127 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: NOV HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) n (S) (W) VARIABLE I CALM I"""""""""'"""""""""/ """""""""///////////// 42.7 ///// / TOTALS TOTAL NUMBER OF OBSERVATIONS 496 C USAFETAC/DS-90/223 - Page 127

128 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: NOV HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM /////////////////////////////// ////////////////////////////////////// 28.9 /////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 567 C USAFETAC/DS-90/223 - Page 128

129 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: NOV HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) 7% WIND WIND (N) (E) (S) (W) VARIABLE I CALM I///////////////////////////////////////12.7 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 561 C USAFETAC/DS-90/223 - Page 129

130 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: NOV HOURS: DIRECTION I 1-4 WIND SPEED IN KNOTS GE 65 TOTAL MEAN MEDIAN (DEGREES) % WIND WIND (N) (E) (S) (W) VARIABLE I CALM j////////////////////////////// //////////////////////////////////////// 11.9 /////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 546 C USAFETAC/DS-90/223 - Page 130

131 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UIC: - 9 MONTH: NOV HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)I % WIND WIND (N) (E) (S) (W) " '..1." VARIABLE CALM I///////////////////////////////////////38.1 ////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 21 C USAFETAC/DS-90/223 - Page 131

132 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE IND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: NOV HOURS: ALL WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM Ii/i/ii/i/i//ii//i///i////////i////i/ii/ii///////ii/////ii////i///////////////23.8 //////// TOTALS I TOTAL NUMBER OF OBSERVATIONS 2193 C USAFETAC/DS-90/223 - Page 132

133 U OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: NOV HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM ////////////////////////////I/////////////////////////////////////////////// 54.2 /////// TOTALS TOTAL NUMBER OF OBSERVATIONS 347 C USAFETAC/DS-90/223 - Page 133

134 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: DEC HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I% WIND WIND (N) j (E) (S) (W) I VARIABLE CALM jii/i///i/i//////ii///i//////////////i// 14.3 II//I/ TOTALS TOTAL NUMBER OF OBSERVATIONS 7 C USAFETAC/DS-90/223 -Page 134

135 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: DEC HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) I (W) VARIABLE I CALM I///////////I/////////.'//////////I///////// //////////// 38.5 ////// / TOTALS I TOTAL NUMBER OF OBSERVATIONS 571 C USAFETAC/DS-90/223 - Page 135

136 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: DEC HOURS: WIND SPEED IN KNOTS DIRECTION j GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (s) (W) VARIABLE I CALM I///////////////////////////////////////23.6 ////// TOTALS TOTAL NUMBER OF OBSERVATIONS 627 C USAFETAC/DS-90/223 - Page 136

137 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: DEC HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE c CALM I///////////////////////////////////////11.2 ////// TOTALS j ? TOTAL NUMBER OF OBSERVATIONS 618 C USAFETAC/DS'90/223 " Page 137

138 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: DEC HOURS: WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (s) (W) VARIABLE CALM I//i/////////////////i////i////////i///////////I/i////////////// 8.6 /////// TOTALS TOTAL NUMBER OF OBSERVATIONS 606 C USAFETAC/DS-90/223 - Page 138

139 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: DEC HOURS: WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES)j % WIND WIND (N) (E) (S) (W) VARIABLE I CALM l""//i/""""""""""i/ i'ii'/// i////////////////////////////// 30.0 ////// / TOTALS TOTAL NUMBER OF OBSERVATIONS 20 C USAFETAC/DS-90/223 - Page 139

140 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WID SPEED LST TO UTC: - 9 MONTH: DEC HOURS: ALL WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) i...i VARIABLE CALM I///////////////////////////////////////20.3 //////////// TOTALS I TOTAL NtLIMBER OF OBSERVATIONS 2449 C USAFETAC/DS-90/223 - Page 140

141 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: DEC HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION I GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE I CALM ji/i//////////i/iii///////////////////// i111 TOTALS I TOTAL NUMBER OF OBSERVATIONS 322 C USAFETAC/DS-90/223 - Page 141

142 PERCENTAGE FREQUENCY OF OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: ALL HOURS: ALL WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) I (S) (W) VARIABLE I CALM I///////////////////////////////////////17.2 ////// TOTALS f TOTAL NUMBER OF OBSERVATIONS: C USAFETAC/DS-90/223 - Page 142

143 PERCENTAGE FREQUENCY uf OCCURRENCE SURFACE WIND DIRECTION VERSUS WIND SPEED LST TO UTC: - 9 MONTH: ALL HOURS: ALL CATEGORY A: CEILING GE 200 BUT LESS THAN 1500 FEET WITH VISIBILITY GE 1/2 MILE (0800 METERS). AND/OR VISIBILITY GE 1/2 MILE (0800 METERS) BUT LESS THAN 3 MILES (4800 METERS) WITH CEILING GE 200 FEET. WIND SPEED IN KNOTS DIRECTION GE 65 TOTAL MEAN MEDIAN (DEGREES) I % WIND WIND (N) (E) (S) (W) VARIABLE CALM /////////////////////////////////////////////////////////////////// 38.6 ///// TOTALS I TOTAL NUMBER OF OBSERVATIONS: 3147 C USAFETAC/DS-90/223 - Page 143

144 USAFETAC/DS-90/223 - Page 144

145 PPPPPPPP AAAAAA RRRRRRRR TTTTTTI DDDDOOD PPPPPPPPP AAAAAAAA RRRRRRRRR TTTTTITT DDDDDD PP PP AA AA RR RR TT DD DD pp pp AA AA RR RR TT DD DD PPPPPPPPP AA AA RRRRRRRRR IT DD DD PPPPPPPP AAAAAAAAAA RRRRRRRR TT DD DD PP AAAAAAAAAA RR RR TT DD DD PP AA AA RR RR TT DD DD PP AA AA RR RR TT PP AA AA RR RR TT DDDDD D-1-1 USAFETAC/DS-90/223 -Page 145

146 PART D CEILING VERSUS VISIBILITY AND SKY COVER SUMMARIES CEILING VS VISIBILITY--PERCENT OCCURRENCE FREQUENCY (POF). CREATED, THIS SUMMARY IS A BIVARIATE DISTRIBUTION OF PERCENTAGE FREQUENCY BY CLASSES OF CEILING (FROM ZERO FEET TO 20,000 FEET-- "NO CEILING" IS A SEPARATE CLASS) VERSUS VISIBILITY CLASSES (FROM ZERO MILES (METERS) TO GREATER THAN OR EQUAl TO 7 STATUTE MILES (11,200 METERS)). THE TABLES SUMMARIZE THE DATA AS FOLLOWS: - BY EIGHT 3-HOUR STANDARD TIME PERIODS FOR EACH MONTH (ALL YEARS COMBINED). - BY MONTH (ALL YEARS AND ALL HOURS COMBINED). - BY YEAR (ALL YEARS AND ALL HOURS COMBINED). BECAUSE OF THE CUMULATIVE NATURE OF THESE SUMMARIES, IT IS POSSIBLE TO DETERMINE THE PERCENTAGE OCCURRENCE FREQUENCY (POF) FOR ANY GIVEN CEILING AND/OR VISIBILITY LIMIT(S), EITHER SEPARATELY OR IN ANY COMBINATION. TOTALS PROGRESS FROM RIGHT TO LEFT AND FROM BOTTOM TO TOP. TO DETERMINE CEILING ALONE, REFER TO THE EXTREME RIGHT-HAND COLUMN (ZERO VISIBILITY). TO DETERMINE VISIBILITY ALONE, REFER TO THE BOTTOM ROW (ZERO CEILINGS). DETERMINE THE POF THAT MEETS OR EXCEEDS ANY GIVEN SET OF MAXIMA BY READING THE VALUE AT THE INTERSECTION OF THE APPROPRIATE CEILING ROW AND VISIBILITY COLUMN. NOTE 1: IN JANUARY 1968, METAR STATIONS BEGAN REPORTING VISIBILITIES TO 6 STATUTE MILES OR 9000 METERS. VALUES EXCEEDING 9000 METERS ARE REPORTED AS "9999." NOTE 2: FOR OVERSEAS CIVILIAN STATIONS REPORTING "CAVOK", ALL CEILINGS GREATER THAN 5000 FEET APPEAR IN THE 5000 FEET CLASS. CONVERSIONS: 1 STATUTE MILE = 1, METERS = NAUTICAL MILES. FOR CONVENIENCE, THE CONVERSION OFTEN USED IS 1 STATUTE MILE = 1,600 METERS. SKY COVER--PERCENT OCCURRENCE FREQUENCY. ALSO CREATED, THIS SUMMARY GIVES PERCENTAGE OCCURRENCE FREQUENCY (POF) OF SKY COVER IN EIGHTHS FOR SYNOPTIC STATIONS, BUT AS CLEAR, SCATTERED, BROKEN, OVERCAST, PARTIALLY OBSCURRED, OR TOTALLY OBSCURRED FOR AIRWAYS STATIONS. FOR AIRWAYS STATIONS, THIS SUMMARY ALSO GIVES POF FOR SKY COVER GREATER THAN ONE-HALF (I.E., 6/10). DATA IS SUMMARIZED THE SAME AS FOR PREVIOUS TABLE. NOTE 1. THESE SUMMARIES ARE NOT AVAILABLE FOR METAR REPORTING STATIONS. D 1-2 USAFETAC/DS-90/223 - Page 146

147 NOTE 2. AIRWAYS STATIONS THAT HAVE REPORTED IN SYNOPTIC COOE HAVE HAD THEIR SYNOPTIC SKY COVER REPORTS CONVERTED AS FOLLOWS: 0/8... CLEAR 1/8 THRU 4/8... SCATTERED 5/8 THRU 7/8... BROKEN 8/8... OVERCAST NOTE 3. "PARTIAL OBSCURATION" IS A SEPARATE CATEGORY NOT INCLUDED IN COMPUTATION OF "GREATER THAN 1/2" PERCENTAGES. "TOTAL OBSCURATIONS," HOWEVER, ARE INCLUDED. D- 1-3 USAFETAC/DS-90/223 - Page 147

148 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JAN HOURS: CEILING VISIBILITY IN METERS I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 3 D III USAFETAC/DS-90/223 " Page 148 I_

149 OPERATING LOCAION "A" PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JAN HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 2500: GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 554 D -2-2 USAFETAC/DS-90/223 - Page 149

150 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JAN HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I bo NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 609 D USAFETAC/DS-90/223 - Page 150

151 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JAN HOURS: CEILING VISIBILITY IN METERS IN 1GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL j GE GE GE GE GE I GE GE GE GE GE GE GE GE GE GE GE GE GE C GE GE GE GE GE GE GE GE GE 400I GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 611 D USAFETAC/DS-90/223 - Page 151

152 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JAN HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE ? GE GE 7000! GE 6000! GE GE GE GE 3500! GE GE GE 2000! GE 1800! GE GE 1200! GE GE 900! GE 800! GE 700! GE GE 500! GE GE 300! GE 200! GE 100! GE TOTAL NUMBER OF OBSERVATIONS 606 D -2-5 USAFETAC/DS-90/223 - Page 152

153 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JAN HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 17 D GE ~ ~ ~ ~ ~ ~ ~ ~ ~ 82.4 ~ ~ m m 100.0n USAFETAC/DS-90/223 - Page 153

154 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JAN HOURS: ALL CEILING VISIBILITY IN METERS IN j GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET j NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2400 D USAFETAC/DS-90/223 - Page 154

155 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: FEB HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 9001 GE GE GE GE GE GE GE 200) GE GE TOTAL NUMBER OF OBSERVATIONS 1 D USAFETAC/DS-90/223 - Page 155

156 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: FEB HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 1200: GE GE GE GE GE u GE GE GE GE C GE GE TOTAL NUMBER OF OBSERVATIONS 1 D USAFETAC/DS-90/223 - Page 156

157 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A-8L;5(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: FEB HOURS: o... CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE 12000! GE GE GE GE GE GE GE GE GE GE GE o GE GE 1800! GE 1500! GE GE GE 900! GE GE 700! GE 600! GE 500! GE GE 300! GE 200! GE 100! GE TOTAL NUMBER OF OBSERVATIONS 522 D USAFETAC/DS-90/223 - Page 157

158 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: FEB HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 575 D USAFETAC/DS-90/223 - Page 158

159 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: FEB HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE , GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 571 D USAFETAC/DS-90/223 - Page 159

160 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: FEB HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 561 D-2-13 USAFETAC/DS-90/223 - Page 160

161 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: FEB HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 5 D GE GE m m ] USAFETAC/OS-90/223 - Page 161

162 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: FEB HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 1000I O.O GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 1 D USAFETAC/DS-90/223 - Page 162

163 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: FEB HOURS: ALL CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2237 D USAFETAC/DS-90/223 - Page 163

164 I OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: MAR HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE InO GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NIMBER OF OBSERVATIONS 1 D USAFETAC/DS-90/223 - Page 164

165 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A-8O5(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: MAR HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE 10000! GE GE GE GE 6000! GE 5000! GE 500! GE GE 3500! GE 3000! GE 2500! GE GE 1800! GE 1500! GE 1200! GE IO GE GE 800! GE 700! GE GE 500! GE GE GE GE 100! GE TOTAL NUMBER OF OBSERVATIONS 579 D USAFETAC/DS-90/223 - Page 165

166 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: MAR HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 648 D USAFETAC/DS-90/223 - Page 166

167 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: MAR HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 700! ' GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 644 D " 2-20 USAFETAC/DS-90/223 - Page 167

168 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: MAR HOURS: ,... CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 632 D - 2 " 21 USAFETAC/DS-90/223 " Page 168

169 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: MAR HOURS: ALL CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 3000! GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2504 D USAFETAC/DS-90/223 - Page 169

170 OPERAIING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY FROM HOURLY OBSERVAiIONS LST TO UTC: - 9 MONTH: APR HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET o... NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 2000! GE GE GE GE GE GE GE GE GE GE 400I GE GE GE 100! GE TOTAL NUMBER OF OBSERVATIONS 13 D USAFETAC/DS-90/223 - Page 170

171 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: APR HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE W GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 550 D A.i USAFETAC/DS-90/223 - Page 171

172 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A'805(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: APR HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE UO GE GE TOTAL NUMBER OF OBSERVATIONS 633 D USAFETAC/DS-90/223 - Page 172

173 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: APR HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 3000! GE b GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 631 D USAFETAC/DS-90/223 - Page 173

174 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: APR HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE 8000! GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 500! GE GE GE 200! GE 100! GE TOTAL NUMBER OF OBSERVATIONS 614 D USAFETAC/DS-90/223 - Page 174

175 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: APR HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL i GE & GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 36 D USAFETAC/DS-90/223 - Page 175

176 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: APR HOURS: ALL CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2477 D USAFETAC/DS-90/223 - Page 176

177 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: MAY HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 400I GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 49 D USAFETAC/DS-90/223 - Page 177

178 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECOh, APR 79 - MAR 89 LST TO UTC: - 9 MONTH: MAY HOUR3: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE ? GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 534 D USAFETAC/DS-90/223 - Page 178

179 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: MAY HOURS: CEILING VISIBILITY IN METERS IN I GE GE re GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 1800! GE GE GE GE b GE GE c GE E 500! GE 40C GE 300! GE 200! GE GE TOTAL NUMBER OF OBSERVATIONS 626 D USAFETAC/DS-90/223 - Page 179

180 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: MAY HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE U GE GE 400j GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 62o D " 2-33 USAFETAC/DS-90/223 - Page 180

181 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD O; RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: MAY HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET i NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 548 D USAFETAC/DS-90/223 - Page 181

182 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY FROM HOURLY OBSFRVATIONS LST TO UTC: - 9 MONTH: MAY HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 43 D " 2 " 35 USAFETAC/DS'90/223 " Page 182

183 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: MAY HOURS: ALL CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE 12000G GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2426 D USAFETAC/DS-90/223 Page 183

184 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUN HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 65 D USAFETAC/DS-90/223 - Page 184 I.

185 hf OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUN HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE L GE GE GE GE GE Z GE GE O GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 594 D USAFETAC/DS-90/223 - Page 185

186 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUN HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE & GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 636 D - 2 " 39 USAFETAC/DS-90/223 - Page 186

187 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUN HOURS: CEILING VISIBILITY IN METERS IN j GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE CE GE GE GE GE GE GE GE GE GE GE GE GE GE GE CE GE TOTAL NUMBER OF OBSERVATIONS 639 D USAFETAC/DS-90/223 - Page 187

188 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUN HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 2000! GE GE GE GE GE GE GE GE GE GE GE GE GE fl GE 000! TOTAL NUMBER OF OBSERVATIONS 587 D USAFETAC/DS-90/223 - Page 188

189 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUN HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 1000I u GE u GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 38 D USAFETAC/DS-90/223 " Page 189

190 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUN HOURS: ALL CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE 1400JI GE GE GE GE GE GE GE GE GE GE GE Q GE F GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE U TOTAL NUMBER OF OBSERVATIONS 2559 D USAFETAC/DS-90/223 - Page 190

191 - OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUL HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE CE GE GE GE GE GE GE GE GE GE U GE GE GE GE GE GE S GE GE GE GE GE GE S GE GE TOTAL NUMBER OF OBSERVATIONS 2 o GE,, l USAFETAC/DS-90/223 - Page 191

192 I OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY FROM HOUR.Y OBSERVATIONS LST TO UTC: - 9 MONTH: JUL HOURS: CEILING VISIBILITV IN METERS IN GE GE GE GE cr GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE '.3 GE GE i GE GE GE GE GE GE GE GE GE GE GE GE GE b GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 47 D 2-45 USAFETAC/DS-90/223 - Page 192 -i

193 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUL HOURS: CEILING VISIBILITY IN METERS IN 1GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET j " NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TO AL NUMBER OF OBSERVATIONS 569 O - 2 " 46 USAFETAC/DS-90/223 - Page 193

194 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A'805(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: JUL HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 629 D USAFETAC/DS-90/223 - Page 194

195 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUL HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 632 D USAFETAC/DS-90/223 - Page 195

196 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) OR.EA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: JUL HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE C TOTAL NUMBER OF OBSERVATIONS 567 D USAFETAC/DS-90/223 - Page 196

197 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUL HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO 'IEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS USAFETAC/DS-90/223 - Page 197

198 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUL HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE 3500! GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 1 D USAFETAC/DS-90/223 - Page 198

199 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: JUL HOURS: ALL CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NU CEIL GE GE GE GE GE GE GE GE GE GE GE E GE GE GE 3O GE GE GE GE 150C GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2467 D USAFETAC/DS-90/223 - Page 199

200 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: AUG HOURS: CEILING VISIBILITY IN METERS IN I GE CE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL I GE GE GE GE GE GE GE GE GE GE GE GE C GE GE GE GE GE GE GE GE GE GE GE GE GE 600j100, GE GE GE GE i GE GE TOIAL NUMBER OF OBSERVATIONS 2 D USAFETAC/DS-90/223 - Page 200

201 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: AUG HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL L GE GE ? GE GE 14000! GE GE GE GE GE 7000! GE GE GE GE GE GE GE 2500! GE GE 1800! GE GE GE GE 900! GE 800! GE 700! GE 600! GE 500! GE 400I GE GE GE 100! GE TOTAL NUMBER OF OBSERVATIONS 45 D USAFETAC/DS-90/223 - Page 201

202 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KORA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: AUG HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET j NO CEIL GE GE GE GE GE GE GE GE y GE GE GE GE GE GE GE GE GE GE GE GE GE GE GF GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 590 D USAFETAC/OS-90/223 - Page 202

203 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: AUG HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 653 D USAFETAC/DS-90/223 - Page 203

204 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RELR": APR 79 - MAR 89 LST TO UTC: - 9 MONTH: AUG HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 650 D USAFETAC/DS-90/223 - Page ,,,.. o.,..b --

205 PERCENTAGE FREOUENCY OF OCCURRENCE OF CEILING VERSUS VISIB!LITY LST TO UTC: - 9 MONTH: AUG HOURS: CE"ING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE b 64.6 GE GE GE GE GE q GE GE GE GE GE GE GE GE GE GE , GE GE ; GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 570 D USAFETAC/DS-90/223 - Page 205

206 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: AUG HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 1000( GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 27 D USAFETAC/DS-90/223 - Page 206

207 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: AUG HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEL I GE GE GE GE GE GE GE GE u GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 4 O GE USAFETAC/DS-90/223 - Page 207

208 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: AUG HOURS: ALL CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE 180G GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2541 D USAFETAC/DS-90/223 - Page 208

209 PERCENTAGE FREOUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: SEP HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I... NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 43 D USAFETAC/DS-90/223 - Page 209

210 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: SEP HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 560 D USAFETAC/DS-90/223 - Page 210

211 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: SEP HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 614 D USAFETAC/DS-90/223 - Page 211

212 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: SEP HOURS: i... CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE : GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 613 D USAFETAC/DS-90/223 - Page 212

213 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: SEP HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CElL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE " GE r GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 539 D USAFETAC/DS-90/223 - Page 213

214 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: SEP HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE 9000! GE 8000! 73.7 GE GE GE GE GE GE GE 3000! GE GE GE GE GE 1200! GE GE GE 800! GE GE 600! GE 500! GE GE GE 200! GE 100! GE TOTAL NUMBER OF OBSERVATIONS 19 D USAFETAC/DS-90/223 " Page 214

215 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: APR79 - MAR 89 LST TO UTC: - 9 MONTH: SEP HOURS: ALL CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE b GE L GE GE GE GE GE GE GE GE GE GE GE 2500) GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2388 D USAFETAC/DS-90/223 - Page 215

216 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAiME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: OCT HOURS: CEILING VISIBILITY IN METERS IN j GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 2500! GE GE GE GE GE 1000! GE GE GE GE 600! GE GE 400! GE GE 200! GE GE TOTAL NUMBER OF OBSERVATIONS 15 D 2-69 USAFETAC/DS-90/223 - Page 216

217 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: OCT HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE o 30.J b1.6 GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 547 D USAFETAC/DS-90/223 - Page 217

218 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: OCT HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 1800! GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 632 D USAFETAC/DS-90/223 - Page 218

219 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: OCT HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE ! GE GE GE GE GE GE GE GE GE C GE GE GE Q GE B ? GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 632 D USAFEIAC/DS Q0. Page 21Q

220 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: OCT HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 900! GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 577 D USAFETAC/DS-90/223 - Page 220

221 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY ROM HOURLY OBSERVATIONS LST TO UTC: - 9 MONTH: OCT HOURS: CEILING VISIBILITY IN METERS IN j GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 300! GE GE GE TOTAL NUMBER OF OBSERVATIONS 26 D USAFETAC/DS-90/223 - Page 221

222 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: OCT HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE 3500li GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE I l GE ] GE TOTAL NUMBER OF OBSERVATIONS 1 O GE~~~ ,,,,,,,,,,,, m USAFETAC/DS-90/223 - Page 222

223 OPERATING LOCATION "A' PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: OCT HOURS: ALL CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2430 O USAFETAC/DS-90/223 - Page 223

224 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: NOV HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE 4500I GE GE GE GE GE GE GE G GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2 D USAFETAC/DS-90/223 - Page 224

225 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: NOV HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET j NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE Y GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 490 D USAFETAC/DS-90/223 - Page 225

226 PERCENTAGE FREQUENCY OF OCCURRENCE Of CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: NOV HOURS: ,...,...,...,... CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET ,... NO CE(L GE GE 180COI GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE S GE GE GE GE GE TOTAL P'UMBER OF OBSERVATIONS 564 D - 2 " 79 USAFETAC/DS-90/223 - Page 226

227 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: NOV HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE n.2 GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 553 D USAFETAC/DS-90/223 - Page 227

228 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP UALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: NOV HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 540 D USAFETAC/BS-90/223 - Page 228

229 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: NOV HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CE.L I GE GE GE GE GE GE GE GE GE GE GE GE " GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE E GE TOTAL NUMBER OF OBSERVATIONS 21 D II TOTA.,Lm 21N.UBER OF OBEVAIN J USAFETAC/DS-90/223 -Page 229

230 q OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: NOV HOURS: ALL CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE 18000! GE GE GE GE GE GE GE GE GE GE GE GE 3500! GE GE GE GE GE GE GE GE GE GE GE GE GE GE 300! GE 200! GE GE TOTAL NUMBER OF OBSERVATIONS 2170 D USAFETAC/DS-90/223 - Page 230

231 PERCENTAGE FREOUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: DEC HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL * GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS USAFETAC/DS-90/223 - Page 231

232 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: DEC HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 571 D USAFF.AC/DS-90/223 - Page 232

233 i I I OPERATING LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: DEC HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE CE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE 10000! GE GE GE GE GE GE 4500! GE 4000! GE GE 3000! GE 2500! GE 2000! GE 1800! GE 1500! GE GE 1000! GE 900! GE 800! GE GE 600! GE 500! GE GE 300! GE 200! GE 100! GE TOTAL NUMBER OF OBSERVATIONS 627 O USAFETAC/DS-90/223 - Page 233

234 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: DEC HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE d GE GE GE GE GE GE GE GE GE GE GE GE GE GE q GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 617 D USAFETAC/DS-90/223 - Page 234

235 OPERAT!NG LOCATION "A" PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: DEC HOURS: CEILING VISIBILITY IN METERS IN I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 1000I GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 605 D USAFETAC/DS-90/223 - Page 235

236 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY STATION NUMBER: STATION NAME: CAMP WALKER/A-8O5(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: DEC HOURS: CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL I GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE 2000I GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 20 D USAFETAC/DS-90/223 - Page 236

237 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY LST TO UTC: - 9 MONTH: DEC HOURS: ALL CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET NO CEIL GE GE GE GE GE GE GE GE GE 7UO0j GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS 2447 D USAFETAC/DS-90/223 - Page 237

238 PERCENTAGE FREQUENCY OF OCCURRENCE OF CEILING VERSUS VISIBILITY ST TO UTC: - 9 MONTH: ALL HOURS: ALL CEILING VISIBILITY IN METERS IN GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE FEET I NO CEIL GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE a GE 2500! GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE TOTAL NUMBER OF OBSERVATIONS: D USAFETAC/DS-90/223 - Page 238

239 PPPPPPPP AAAAAA RRRRRRRR TITTTTTTTT EEEEEEEEEE PPPPPpPPP AAAAAAAA RRRRRRRRR TTTTTITT EEEEEEEEEE pp pp AA AA RR RR TT EE pp pp AA AA RR RR TT EE ppppppppp AA AA RRRRRRRRR TT EEEEEE pppppppp AAAAAAAAAA RRRRRRRR TT EEEEEE pp AAAAAAAAAA RR RR TT EE pp AA AA RR RR TT EE pp AA AA RR RR TT EEEEEEEEEE pp AA AA PR RR IT EEEEEEEEEE E- - USAFETAC/DS-90/223 -Page 239

240 PART E TEMPERATURE AND RELATIVE HUMIDITY SUMMARIES TEMPERATURE--CUMULATIVE PERCENT OCCURRENCE FREQUENCY (POF). THESE TABLES ARE CREATED FROM SUMMARY OF DAY DATA AND GIVE CUMULATIVE POF FOR MAXIMUM, MINIMUM, AND MEAN TEMPERATURES, RESPECTIVELY. DATA IS SUMMARIZED BY MONTH FOR ALL YEARS COMBINED. TOTALS ARE GIVEN FOR THE WHOLE YEAR. DATA IS DISPLAYED USING 5-DEGREE FAHRENHEIT INCREMENTS (GE 0, GE 5, GE 10, ETC).. THERE IS ONE SPECIAL THRESHOLD FOR "GE 33" DEGREES. MEANS, STANDARD DEVIATIONS, AND TOTAL OBSERVATION COUNTS ARE GIVEN. NOTE 1. BEGINNING IN JANUARY 1946, DAILY MAXIMUM AND MINIMUM TEMPERATURES CAME ROUTINELY ON AWS FORMS 10/1OA OR FROM AUTOMATED DATA COLLECTION FROM ALL USAF-OPERATED STATIONS. REFER TO THE "STATION HISTORY" PAGE FOR DETAILED INFORMATION ON REPORTING PRACTICES. MONTHLY TEMPERATURES. ALSO FROM SUMMARY OF DAY DATA, THE TABLES GIVE MONTHLY MAXIMUM AND MINIMUM TEMP- ERATURES BY MONTH AND BY YEAR. MONTHLY RECORD TEMPERATURES (MAX AND MIN) ARE GIVEN, ALONG WITH TOTAL OBSERVATIONS. AN ASTERISK (*) INDICATES A VALUE FOR A MONTH FOR WHICH LESS THAN 90% OF THE DATA ARE AVAILABLE. AN ASTERISK ALSO DENOTES A YEAR(S) WITH ONE OR MORE MISSING AND/OR INCOMPLETE MONTHS. MEAN MONTHLY TEMPERATURE. ALSO FROM SUMMARY OF DAY DATA, GIVES MONTHLY MEAN TEMPERATURE BY MONTH, FOR ALL MONTHS, AND FOR ALL YEARS. AN ASTERISK (*) INDICATES A VALUE FOR A MONTH FOR WHICH LESS THAN 90% OF THE DATA ARE AVAILABLE. AN ASTERISK ALSO DENOTES A YEAR(S) WITH ONE OR MORE MISSING AND/OR INCOMPLETE MONTHS. DRY BULB, WET BULB, AND DEW POINT TEMPERATURES. THESE TABLES ARE CREATED - -DATA IS SUMMARIZED: - BY EIGHT 3-HOUR STANDARD TIME PERIODS FOR EACH MONTH (ALL YEARS COMBINED). " BY MONTH (ALL YEARS AND ALL HOURS COMBINED). - BY YEAR (ALL YEARS AND ALL HOURS COMBINED). MEANS, STANDARD DEVIATIONS, AND TOTAL OBSERVATION COUNTS ARE GIVEN. THE MEAN NUMBER OF HOURS WITH TEMPERATURES FOR VARIOUS THRESHOLDS ALSO APPEAR AS SPECIFIED IN EACH SUMMARY AND IN ACCORDANCE WITH AFM 88-29, "ENGINEERING WEATHER DATA," AND AWSP , "METEOROLOGICAL TECHNIQUES." NOTE 1. WINTER WET BULB AND DEW POINT MEAN TEMPERATURES FOR VERY COLD STATIONS MUST BE USED WITH CAUTION. WHEN THE DRY BULB TEMPERATURE IS BELOW -35 DEGREES F, DEW POINT TEMPERATURES ARE NOT REPORTED (FMH-IB). AS A RESULT, WINTER MEAN DEW POINTS (AND MORE FREQUENTLY, WINTER MEAN WET BULB TEMPERATURES) ARE ACTUALLY LOWER THAN SHOWN IN THE TABLES. IN SOME HOUR GROUPS, IN FACT, MEAN WET BULB TEMPERATURES MAY ACTUALLY BE SHOWN AS EXCEEDING THE MEAN DRY BULB TEMPERATURES. E -I-2 USAFETAC/DS-90/223 - Page 240

241 SPECIAL CAVEAT: DURING PART TIME PERIODS, THESE SUMMARIES REPRESENT THE "HIGH' AND "LOW" TEMPERATURES RECORDED AND NOT NECESSARILY THE ACTUAL MAXIMUM AND MINIMUM VALUES. THESE SUMMARIES ARE INFLUENCED BY THE ABSENCE OF NIGHTTIME TEMPERATURE READINGS. THEREFORE, CERTAIN SUMMARIES MAY DEPICT A SLIGHT "WARM" BIAS. TEMPERATURE CONVERSIONS: F = 1.8C + 32 C = K (BEFORE 5 APRIL 77) C K (SINCE 5 APRIL 77) RELATIVE HUMIDITY--CUMULATIVE PERCENT OCCURRENCE FREQUENCY (POF). CREATED, THESE TABLES GIVE POF OF RELATIVE HUMIDITY FOR 10% INCREMENTS. MEANS AND TOTAL OBSERVATION COUNTS ARE ALSO PROVIDED. THE DATA IS SUMMARIZED AS FOLLOWS: - BY EIGHT 3-HOUR STANDARD TIME PERIODS FOR EACH MONTH (ALL YEARS COMBINED). - BY MONTH (ALL YEARS AND ALL HOURS COMBINED). - BY YEAR (ALL YEARS AND ALL HOURS COMBINED). E USAFETAC/DS-90/223 - Page 241

242 OPERATING LOCATION 'A' CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE OF MAXIMUM TEMPERATURES IN FAHRENHEIT FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL TEMP JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN (DEG-F) GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE GE MEAN SO TOTAL OBS E USAFETAC/DS-90/223 - Page 242

243 OPERATING LOCATION 'A' CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE OF MINIMUM TEMPERATURES IN FAHRENHEIT FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL... TEMP JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN (DEG-F) I GE GE GE GE GE GE GE GE GE ' GE GE GE GE GE GE GE GE MEAN I SD TOTAL OBS E USAFETAC/DS-90/223 - Page 243

244 OPERATING LOCATION 'A' CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE OF MEAN TEMPERATURES IN FAHRENHEIT FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL TEMP JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN (DEG-F).I GE 90 I GE GE GE GE GE LE GE GE GE GE GE GE GE GE GE GE GE MEAN SD TOTAL OBS E -2-3 USAFETAC/DS ,'...

245 OPERATING LOCATION 'A' MONTHLY MAXIMUM TEMPERATURES IN FAHRENHEIT FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL 73 48* 60* 78* 82* 80* 89* 96* 95* 84* 78* 66* 46* 96* 74 50* 50* 62* 73* 84* 87* 89* 93* 84* 75* 68* 48* 93* 75 48* 53* 62* 78* 84* 87* 95* 95* 91* 78* 64* 60* 95* 76 53* 53* 66* 78* 84* 93* 93* 95* 84* 78* 69* 55* 95* 77 42* 68* 69* 82* 86* 89* 98* 98* 89* 82* 64* 60* 98* 78 51* 55* 64 84* 91* 86* 100* 95* 89* 87* 68* 62* 100* 79 57* 69* 73* 78* 93* 89* 96* 95* 84* 81* 79* 55* 96* 80 55* 57* 64* 75* 91* 95* 93* 88* 90* 79* 70* 57* 95* 81 45* 48* 72* 82* 91* 91* 99* 91* 90* 75* 66* 54* 99* 82 57* 57* 70* 79* 91* 93* 97* 99* 91* 88* 70* 55* 99* 83 54* 52* 7Q* 84* 95* 95* 97* 100* 90* 79* 68* 61* 100* 84 52* 55* 70* 82* 88* 93* 95* 102* 84* 79* 73* 63* 102* 85 48* 57* 64* 82* 84* 91* 99* 99* 93* 79* 66* 61* 99* 86 50* 57* 64* 82* 84* 90* 95* 95* 86* 77* 63* 57* 95* 87 52* 66* 68* 81* 86* 95* 93* 91* 86* 84* 70* 68* 95* 88 52* 55* 63* 82* 88* 91* 99* 99* 90* 79* 68* 61* 99* 89 50* 59* 70* 70*... GREATEST * TOTAL OBS THE GREATEST VALUE OF 102 OCCURRED ON 08/10/84 NOTE: *THE VALUE IS BASED ON A MONTH WITH LESS THAN 90% OF THE DATA AVAILABLE FOR THE MONTH E USAFETAC/DS-90/223 - Page 245

246 OPERATING LOCATION 'A' MONTHLY MINIMUM TEMPERATURES IN FAHRENHEIT FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD nr :,L CORD: LST TO UTC: -09 MONIH: ALL HOURS: ALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL S * 21* 26* 35* 51* 57* 71* 71* 48* 39* 26* 17* 17* 74 12" il* 19* 37* 46* 53* 60* 60* 50* 39* 24* 21* 1O* 75 17* 21* 28* 33* 42* 60* 66* 64* 57* 46* 26* 17* 17* 76 10* 42* 26* 37* 41* 59* 59* 66* 51* 35* 28* 10* 10L 77 10* 5* 14* 39* 44* 59* 68* 62* 48* 46* 28* 24* 5* 78 15* 12* 23 33* 48* 57* 69* 64* 51* 35* 28* 23* 12* 79 19* 15* 24* 33* 46* 60* 62* 60* 52* 43* 23* 16* 15* 80 12* 14* 28* 36* 48* 61* 64* 63* 48* 36* 23* 16* 12* 81 72* 10* 23* 39* 46* 48* 68* 64* 52* 37* 32* 21* 10* 82 16* 18* 27* 39* 48* 57* 66* 66* 54* 34* 27* 19* 16* 83 18* 14* 2S* 37* 48* 55* 61* 68* 57* 34* 23* 19* 14* 84 14* 10* 19* 32* 48* 61* 68* 70* 54* 36* 28* 16* 10* 85 10* 21* 30* 32* 48* 55* 66* 73* 48* 43* 28* 14* 10* 86 14* 16* 28* 36* 48* 57* 61* 68* 48* 30* 28* 21* 14* 87 14* 19* 25* 34d 43* 52* 66* 66* 50* 36* 23* 19* 14* 88 19* 12* 23* 37* 48* 61* 64* 63* 54* 37* 30* 19* 12* 89 19* 21* 23* 19* LEAST TOTAL OBS THE LEAST VALUE OF 5 OCCURRED ON 02/16/77 NOTE: *THE VALUE IS BASED ON A MONTH WITH LESS THAN 90% OF THE DATA AVAILABLE FOR THE MONTH E -3-2 USAFETAC/DS-90/223 - Page 246 4

247 OPERATING LOCATION 'A' MONTHLY MEAN TEMPERATURES IN FAHRENHEIT FROM SUMMARY OF DAY DATA STATION NUMBER: STATION NAME: CAMP WALKER/A-8O5(TAEGU) KOREA PERIOD OF RECORD: LST TO UTC: -09 MONTH: ALL HOURS: ALL YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL * 37* 45* 58* 65* 72* 83* 83* 70* 58* 45* 33* 58* 74 32* 33* 42* 56* 66* 70* 73* 79* 68* 58* 45* 35* 55* 75 32* 34* 44* 56* 64* 71* 80* 81* 73* 61* 51* 36* 57* 76 30* 48* 45* 56* 64* 71* 76* 78* 68* 60* 44* 36* 57* 77 27* 31* 46* 58* 67* 72* 81* 77* 71* 61* 47* 41* 57* * 37* 34* 39* 44 47* 57* 56* 67* 64* 73* 74* 83* 77* 83* 79* 71* 69* 61* 63* 50* 46* 40* 40* 58* 58* 80 31* 33* 47* 54* 66* 76* 75* 73* 69* 58* 50* 34* 56* 81 28* 33* 47* 59* 66* 72* 83* 79* 69* 58* 47* 37* 57* 32 35* 37* 48* 58* 70* 75* 79* 81* 72* 63* 51* 37* 59* 83 34* 35* 46* 61* 67* 74* 75* 82* 73* 61* 47* 36* 58* 84 30* 31* 43* 56* 67* 75* 80* 84* 71* 60* 50* 38* 57* 85 29* 38* 47* 58* 67* 72* 83* 83* 73* 63* 49* 32* 58* 86 31* 32* 46* 58* 66* 73* 75* 80* 69* 57* 47* 40* 57* 87 33* 39* 45* 58* 66* 73* 79* 79* 70* 63* 50* 38* 58* 88 36* 34* 44* 57* 66* 74* 78* 81* 72* 63* 48* 37* 58* 89 38* 40* 46* 41* MEAN TOTAL OBS NOTE: *THE VALUE IS BASED ON A MONTH WITH LESS THAN 90% OF THE DATA AVAILABLE FOR THE MONTH E - 4- USAFETAC/DS-90/223 - Page 247

248 DRY BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: JAN HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 0 LE 32 GE 65 GE 80 GE 93 HOURS ALL HOURS MONTH: FEB i ALL HOURS E USAFETAC/DS-90/223 - Page 248

249 DRY BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: MAR HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST DEVIATION OBS LE 0 LE 32 GE 65 GE 80 GE 93 HOURS D ALL HOURS MONTH: APR ALL HOURS E USAFETAC/DS-90/223 - Page 249

250 DRY BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: MAY HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 0 LE 32 GE 65 GE 80 GE 93 HOURS ALL HOURS MONTH: JUN ALL HOURS E USAFETAC/DS-90/223 - Page 250

251 DRY BULB TEMPERATURE SUMMARY STATION NUMBER: STATION NAME: CAMP WALKER/A-8O5(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: JUL HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST DEVIATION OBS LE 0 LE 32 GE 65 GE 80 GE 93 HOURS ALL HOURS MONTH: AUG ALL HOURS E USAFETAC/DS-90/223 - Page 251

252 DRY BULB TEMPERATURE SUMMARY STATION NUMBER STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONH: SEP HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST DEVIATION OBS LE 0 LE 32 GE 65 GE 80 GE 93 HOURS ALL HOURS MONTH: OCT ALL HOURS E USAFETAC/DS-90/223 - Page 252

253 DRY BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: NOV HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST j DEVIATION OBS LE 0 LE 32 GE 65 GE 80 GE 93 HOURS ALL HOURS MONTH: DEC ALL HOURS E USAFETAC/DS-90/223 - Page 253

254 DRY BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: ALL HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 0 LE 32 GE 65 GE 80 GE 93 HOURS ALL HOURS E USAFETAC/DS-90/223 " Page 254

255 WET BULB TEMPERATURE SUMMARY FROM HOURLY OBSiRVATIONS LST TO UTC: - 9 MONTH: JAN HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST j DEVIATION OBS LE 32 GE 50 GE 67 GE 73 GE 80 HOURS ALL HOURS MONTH: FEB ALL HOURS E USAFETAC/DS-90/223 - Page 255

256 WET BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: MAR HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST DEVIATION 08S LE 32 GE 50 GE 67 GE 73 GE 80 HOURS ALL HOURS MONTH: APR..... ;...G...; I ALL HOURS E USAFETAC/DS-90/223 - Page 256

257 WET BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: MAY HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 32 GE 50 GE 67 GE 73 GE 80 HOURS ALL HOURS MONTH: JUN ALL HOURS E USAFETAC/DS-90/223 - Page 257

258 WET BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: JUL HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST j DEVIATION OBS LE 32 GE 50 GE 67 GE 73 GE 80 HOURS ALL HOURS MONTH: AUG ALL HOURS E USAFETAC/DS-90/223 - Page 258

259 WET BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: SEP HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST j DEVIATION OBS LE 32 GE 50 GE 67 GE 73 GE 80 HOURS j ALL HOURS MONTH: OCT ALL HOURS E USAFETAC/DS-90/223 - Page 259

260 WET BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: NOV HOURS m MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST DEVIATION OBC LE 32 GE 50 GE 67 GE 73 GE 80 HOURS ALL HOURS MONTH: DEC ALL HOURS E USAFETAC/DS-90/223 - Page 260

261 WET BULB TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: ALL HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST DEVIATION OBS LE 32 GE 50 GE 67 GE 73 GE 80 HOURS ALL HOURS E USAFETAC/DS-90/223 - Page 261

262 DEW POINT TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: JAN... HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 27 GE 37 LE 55 GE 65 HOURS ALL HOURS MONTH: FEB ALL HOURS E USAFETAC/DS-90/223 - Page 262

263 DEW POINT TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: MAR HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 27 GE 37 LE 55 GE 65 HOURS ALL HOURS MONTH: APR ALL OURS E USAFETAC/DS-90/223 - Page 263

264 DEW POINT TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: MAY HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 27 GE 37 LE 55 GE 65 HOURS j ALL HOURS MONTH: JUN ALL HOURS E USAFETAC/DS-90/223 - Page 264

265 DEW POINT TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: JUL HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 27 GE 37 LE 55 GE 65 HOURS ALL HOURS MONTH: AUG ALL HOURS E USAFETAC/DS-90/223 - Page 265

266 DEW POINT TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: SEP HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 27 GE 37 LE 55 GE 65 HOURS ALL HOURS MONTH: OCT ALL HOURS E USAFETAC/DS-90/223 - Page 266

267 DEW POINT TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: NOV HOURS I MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 27 GE 37 LE 55 GE 65 HOURS ALL HOURS MONTH: DEC ALL HOURS E USAFETAC/DS-90/223 - Page 267

268 DEW POINT TEMPERATURE SUMMARY LST TO UTC: - 9 MONTH: ALL HOURS MEAN STANDARD TOTAL MEAN NUMBER OF HOURS WITH TEMPERATURES DEG F TOTAL LST I DEVIATION OBS LE 27 GE 37 LE 55 GE 65 HOURS ALL HOURS E USAFETAC/DS-90/223 - Page 268

269 CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE OF RELATIVE HUMIDITY LST TO UTC: - 9 MONTH: JAN HOURS I RELATIVE HUMIDITY GREATER THAN OR EQUAL TO LST I 10% 20% 30% 40% 50% 60% 70% 80% 90% MEAN TOTAL OBS i, ALL HOURS MONTH: FEB I ALL HOURS E USAFETAC/DS-90/223 - Page 269

270 CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE OF RELATIVE HUMIDITY LST TO UTC: - 9 MONTH: MAR HOURS I RELATIVE HUMIDITY GREATER THAN OR EQUAL TO LST 1 10% 20% 30% 40% 50% 60% 70% 80% 90% MEAN TOTAL OBS ALL HOURS MONTH: APR ALL HOURS E -6-2 USAFETAC/DS-90/223 - Page 270

271 CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE OF RELATIVE HUMIDITY LST TO UTC: - 9 MONTH: MAY HOURS I RELATIVE HUMIDITY GREATER THAN OR EQUAL TO LST 1 10% 20% 30% 40% 50% 60% 70% 80% 90% MEAN TOTAL OBS ALL HOURS MONTH: JUN I ALL HOURI E USAFETAC/DS-90/223 - Page 271

272 CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE OF RELATIVE HUMIDITY FROM HOURLY OP FRVATIONS LST TO UTC: - 9 MONTH: JUL HOURS RELATIVE HUMIDITY GREATER THAN OR EQUAL TO LST I 10% 20% 30% 40% 50% 60% 70% 80% 90% MEAN TOTAL OBS I ALL HOURS MONTH. AUG I ALL HOURS E -6-4 USAFETAC/DS-90/223 - Page 272 A --- Iiiiillll~ l mll ll m

273 CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE OF RELATIVE HUMIDITY LST TO UTC: - 9 MONTH: SEP HOURS I RELATIVE HUMIDITY GREATER THAN OR EQUAL TO LST I 10% 20% 30% 40% 50% 60% 70% 80% 90% MEAN TOTAL OBS ALL HOURS MONTH: OCT ALL HOURS E USAFETAC/DS-90/223 - Page 273

274 Jf OPERATING LOCATION "A" CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE u: RELATIVE HUMIDITY STATION NUMBER: STATION NAME: CAMP WALKER/A-8O5(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: NOV HOURS I RELATIVE HUMIDITY GREATER THAN OR EQUAL TO LST 1 10% 20% 30% 40% 50% 60% 70% 80% 90% MEAN TOTA, OBS I ALL HOURS MONTH: DEC I ALL HOURS E USAFETAC/DS-90/223 - Page 274

275 CUMULATIVE PERCENTAGE FREQUENCY OF OCCURRENCE OF RELATIVE HUMIDITY STATION NUMOER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: APR 79 - MAR 89 LST TO UTC: - 9 MONTH: ALL HOURS I RELATIVE HUMIDITY GREATER THAN OR EQUAL TO LST 1 10% 20% 30% 40% 50% 60% 70% 80% 90% MEAN IOTAL OBS v ? l I ALL HOURS c E u 7 USAFETAC/DS-90/223 - Page 275

276 USAFETAC/DS-9O/223 - Page 276

277 PPPPPPPP AAAAAA RRRRRRRR TTTTTTTTTT FFFFFFFFFF pppppppp AAAAAAAA RRRRRRRRR TTTTTITTTTT FFFFFFFFFF pp pp AA AA RR RR TT FF PP pp AA AA RR RR TT Fr PPPpppppp AA AA PRRRRRRRR TT FFF pppppppp AAAAAAAAAA RRRRRRRR TT FFFFFF PP AAAAAAAAAA RR RR TT FFFF PP AA AA RR RR TT FF PP AA AA RR RR IT FF ppaa AA RR RR TT FF F- - USAFETAC/DS-90l'23 - Page 277

278 PART F PRESSURE SUMMARIES ALL PRESSURE DATA N PART F IS TAKEN. IT IS SUMMARIZED: - BY EIGHT 3-HOUR STANDARD SYNOPTIC REPORTING TIME PERIODS FOR EACH MONTH (ALL YEARS COMBINED). - BY MONTH (ALL YEARS AND ALL HOURS COMBINED). - BY YEAR (ALL YEARS AND ALL HOURS COMBINED). SEA LEVEL PRESSURE. IN MILLIBARS, TABLES GIVE MEANS, STANDARD DEVIATIONS, AND TOTAL OBSERVATION COUNTS. THIS SUMMARY IS NOT AVAILABLE FOR METAR REPORTING SITES. ALTIMETER SETTING. IN INCHES OF MERCURY (HG), TABLES GIVE MEANS, STANDARD DEVIATIONS, AND TOTAL OBSERVATION COUNTS. STATION PRESSURE. IN INCHES OF MERCURY (HG), TABLES GIVE MEANS, STANDARD DEVIATIONS AND TOTAL OBSERVATION COUNTS. PRESSURE CONVERSIONS ARE: 1 MILLIBAR INCHES OF MERCURY (HG). F USAFETAC/DS-90/223 - Page 278

279 ALTIMETER SETTING IN INCHES LST TO UTC: - 9 HOURSI STATS JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN (LST)I I 0000 MEAN SO TOT OBS MEAN SD j.000.uo ITOT OS J MEAN SD fot OBS MEAN SD ITOT OBS MEAN SD TOT OBS MEAN SD ITOT OBS I I MEAN I SD ITOT OBS I I MEAN SD ITOT OBS ALL j MEAN HOURS; SD ITOT OBS F USAFETAC/DS-90/223 - Page 279

280 STATION PRESSURE IN INCHES LST TO UTC: - 9 HOURC I STATS I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN (LST)I I O000".'". A... "' MEAN SSO ITOT OBS I MEAN I D ITOT OBS MEAN o SD TOT OBS MEAN SD TOT OBS MEAN SD TOT CBS MEAN s TOT OBS MEAN SD JTOT OBS I MEAN I I ITOT OBS ALL I MEAN HOURSI SO ITOT CBS F -4-1 USAFETAC/DS-90/223 Page 280

281 PPPPPP AAAAAA RRRRRRRR TTTT4iTT PpPPPPPPP AAAAAAAA RRRRRRRRR TTTTTTTTIT PP PP AA AA RR RR TT GO 00 pp pp AA AA RR RR IT 00 PPPPPPP AA AA RRRRRRRRR TT 00 PPPPPPP AAAAAAAAAA RRRRRRRR TT Pp AAAAAAAAAA RR RR IT PP AA AA RR RR TT pp AA AA RR RR TI pp AA AA RR RR TI G- - USAFETAC/OS-QO/223 -Page 281

282 PART G CROSSWIND SUMMARY CROSSWIND SUMMARIES. THESE TABLES ARE CREATD FROM HOURLY AND SPECIAL OBSERVATIONS (INCLUDING PEAK GUST REMARKS). THE TABLES ARE SUMMARIZED AS FOLLOWS: - BY EIGHT 3-HOUR STANDARD TIME PERIODS FOR EACH MONTH (ALL YEARS COMBINED). - BY MONTH (ALL YEARS AND ALL HOURS COMBINED). " BY MONTH (ALL YEARS AND THE HOURS LST COMBINED). " BY YEAR (ALL YEARS AND ALL HOURS COMBINED). - BY YEAR (ALL YEARS AND THE HOURS LST COMBINED). THE TABLES GIVE PERCENT OCCURRENCE FREQUENCY (POF) OF THE "CROSS-RUNWAY WIND COMPONENT" FOR THE WIND SPEED CLASSES SPECIFIED IN THE TABLE HEADINGS. THERE ARE TWO COMPONENT CATEGORIES: THE FIRST COMPONENT IS COMPUTED FROM THE REPORTED WIND DIRECTION AND WIND SPEED FROM HOURLY RECORD OR RECORD-SPECIAL OBSERVATIONS. THE SECOND COMPONENT IS COMPUTED FROM THE HIGHEST REPORTED WIND SPEED AND DIRECTION FROM ALL OBSERVATIONS INCLUDING REMARKS, GUSTS, AND SPECIAL OBSERVATIONS. OBSERVATION COUNTS INCLUDE CALM WINDS. VARIABLE WINDS ARE CONSIDERED A DIRECT CROSSWIND IF THE SPEED EQUALS OR EXCEEDS THE SPECIFIED THRESHOLD WIND SPEED VALUE(S). A TOTAL OBSERVATION COUNT IS INCLUDED. G USAFETAC/DS-90/223 - Page 282

283 PERCENTAGE FREOUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: JAN CATEGORY A: CATEGORY B: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME (LST) SPEED (KTS) I GE10 GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE1O GE15 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A I CATEGORY B TIME (LST) SPEED (KTS) GE1O GEl5 GE25 OBS GE1O GE15 GE25 OBS GE10 GEl5 GE25 OBS GEIO GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GE10 GEl5 GE25 OBS GE1O GEl5 GE25 OBS CAIEGORY A CATEGORY B G USAFETAC/DS-90/223 - Page 283

284 PERCENTAGE FREQUENCY Of OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: FEB CATEGORY A: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) CATEGORY B: HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME (LST) SPEED (KTS) GE1O GE15 GE25 OBS GE1O GElS GE25 OBS GE1O GEl5 GE25 OBS GE10 GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GE1O GE15 GE25 OBS GE1O GEl5 GE25 OBS GElD GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) 0600 " 2000 ALL HOURS SPEED KTS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B G -2 2 USAFETAC/DS'QG/223 - Page 284

285 PERCENTAGE FREOUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: MAR...,... CATEGORY A: CATEGORY B: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) HIGHEST WINDS REPORTED WITHIN THE HOUR (HURLIES + SPECIALS) TIME (LST) SPEED (KTS) GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OE GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) tio ue;5 GE25 OBS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS.EED KTS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B G USAFETAC/DS-90/223 - Page 285

286 PERCENTAGE FREQUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: APR CATEGORY A: CATEGORY B: ANY CEILIN. OR VISIBILITY (HOURLY OBS ONLY) HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME (LST) SPEED (KTS) GEIO GE15 GE25 OBS GE1O GEl5 GE25 OBS GE1O GE15 GE25 OBS GE1O GE15 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE1O GE15 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B G -2-4 USAFETAC/DS-90/223 - Page 286

287 PERCENTAGE FREQUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: MAY... CATEGORY A: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) CATEGORY B: HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS)... TIME (LST) SPEED (KTS) GEIO GE15 GE25 OBS GE10 GEl5 GE25 ubs GE1O GE15 GE25 OBS GE1D GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE1O GE15 GE25 OBS GElD GE15 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B G -2-5 USAFETAC/DS-90/223 - Page 287

288 i OPERATING LOCATION "A" PERCENTAGE FREOUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: JUN CATEGORY A: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) CATEGORY B: HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME (LST) SPEED (KTS) GElD GEl5 GE25 OBS GE1O GE15 GE25 OBS GElD GE15 GE25 OBS GE1D GEl5 GE25 ORS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GE1O GEl5 GE25 OBS GEl0 GE15 GE25 OBS GE1O GEl5 GE25 OBS GE1O GE15 GE25 OBS CATEGORY A CATEGORY B TIME (LST) I ALL HOURS SPEED K'l GE1O GEl5 GE25 OBS GEJO GEl5 GE25 OBS CATEGORY A I CATEGORY B G USAFETAC/DS-90/223 - Page 288

289 PERCENTAGE FREQUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: JUL CATEGORY A: CATEGORY B: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) "IGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME (LST) I SPEED (KTS) GE1O GE15 GE25 OBS GE1O GEl5 GE25 OBS GE1O GE15 GE25 OBS GE1O GE15 GE25 OBS CATEGORY A CATEGORY B I TIME (LST) SPEED (KTS) GE1O 6E15 GE25 OBS GE1O GE15 GE25 OBS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B G USAFETAC/DS-90/223 - Page 289

290 PERCENTAGE FREQUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: AUG CATEGORY A: CATEGORY B: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME (LST) SPEED (KTS) GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE1O GE15 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GE1O GEl5 GE25 OBS GEl0 GEl5 GE25 OBS CATEGORY A CATEGORY B G USAFETAC/DS-90/223 - Page 290

291 PERCENTAGE FREQUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: SEP CATEGORY A: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) CATEGORY B: HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME (LST) SPEED (KTS) GE1O GE15 GE25 OBS GE1D GE15 GE25 OBS GE1D GEl5 GE25 OBS GE1D GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GElD GE15 GE25 OBS GE1D GE15 GE25 OBS GElD GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GE1O GEl5 GE25 Os GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B G USAFETAC/DS-90/223 - Page 291

292 PERCENTAGE FREQUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: OCT CATEGORY A: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) CATEGORY B: HIGHEST WIND REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME (LST) SPEED (KTS) GE1D GE15 GE25 OBS GE1O GE15 GE25 OBS GE1O GE15 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GE10 GEl5 GE25 OBS GE10 GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE10 GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GEl0 GEl5 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B G USAFETAC/DS-90/223 - Page 292

293 PERCENTAGE FREQUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: NOV CATEGORY A: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) CATEGORY B: HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIMFE (LS SPEED (KTS) GE10 GEl5 GE25 OBS GEl0 GEl5 GE25 OBS GEl0 GElS GE25 OBS GEIO GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GEl0 GEl5 GE25 OBS GEl0 GEl5 GE25 OBS GEl0 GEl5 GE25 OBS GE10 GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GEl0 GEl5 GE25 OBS GElD GEl5 GE25 OBS CATEGORY A CATEGORY B G USAFETAC/DS-90/223 - Page 293

294 PERCENTAGE FREQUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: DEC CATEGURY A: CATEGORY B: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME (LST) SPEED (KTS) GE1O GElS GE25 OBS GE1O GElS GE25 OBS GE1O GEl5 GE25 OBS GEIO GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GElD GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE1O GE15 GE25 OBS GE1O GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GE1O GE15 GE25 OBS GE1O GE15 GE25 OBS CATEGORY A CATEGORY B G USAFETAC/DS-9O/223 - Page 294

295 PERCENTAGE FREQUENCY OF OCCURRENCE OF CROSSWINDS MAGNETIC RUNWAY HEADING: LST TO UTC: - 9 MONTH: ALL CATEGORY A: CATEGORY B: ANY CEILING OR VISIBILITY (HOURLY OBS ONLY) HIGHEST WINDS REPORTED WITHIN THE HOUR (HOURLIES + SPECIALS) TIME 'LST) SPEED (KTS) GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS GE10 GEl5 GE25 OBS GE10 GEl5 GE25 OBS CATEGORY A CATEGORY B TIME (LST) SPEED (KTS) GE1O GEl5 GE25 OBS GE1O GEl5 GE25 OBS GEl0 GEl5 GE25 OBS GE1O GE15 GE25 06S CATEGORY A CATEGORY B TIME (LST) ALL HOURS SPEED KTS GE1O GEl5 GE25 OBS GE10 GEl5 GE25 OBS CATEGORY A CATEGORY B G USAFETAC/DS-90/223 - Page 295

296 USAFETACIDS Page 296

297 PPPPPPPP AAAAAA RRRRRRRR TTTTTTTTTT MN MN PPPPPPPPP AAAAAAAA RRRRRRRRR TTTTTTTTTT HN MN pp pp AA AA RR RR TT HM H pp pp AA AA RR RR TT MN H PPPPPPPPP AA AA RRRRRRRRR TT HHHHHHH PPPPPPpP AAAAAAAAAA RRRRRRRR TT HHHHNNNH pp AAAAAAAAAA RR RR TT NH MN PP AA AA RR PR TT NH H Pp AA AA RR RR TT NH NM Pp AA AA PR RR TT NM MM USAFETAC/DS-90/223 -Page 297

298 PART H DEGREE DAY SUMMARIES DEGREE DAYS. CREATED (MAX+MIN/2 WHEN AVAILABLE), THESE TABLES GIVE THE THE NUMBER OF DEGREE DAYS FOR EACH MONTH IN EACH YEAR OF THE AVAILABLE PERIOD OF RECORD. INCLUDED BENEATH EACH SUMMARY ARE STATISTICS BASED ON A 30-YEAR ( ) POR (IF AVAILABLE). THE 30-YEAR POR PROVIDES AWS USERS WITH A SUMMARY CONSISTENT WITH OTHER STANDARD CLIMATIC PUBLICATIONS, NOTABLY THOSE OF THE NATIONAL CLIMATIC DATA CENTER (NCDC). NOTE THAT THE 30-YEAR POR WILL CHANGE TO AS SOON AS DATA FOR DECEMBER 1990 HAS BEEN PROCESSED. MONTHS WITH NO AVAILABLE DATA AND MONTHS WITH A VALUE OF ZERO APPEAR AS BLANKS IN THESE TABLES. ASTERISKS (****) DENOTE AN INCOMPLETE MONTH WITH A DAY (OR DAYS) THAT CANNOT BE CALCULATED (FILLED IN) AUTOMATICALLY. HEATING DEGREE DAYS. ONE "HEATING DEGREE DAY" IS ASSIGNED TO REPRESENT EACH DEGREE THAT THE MEAN TEMPERATURE FALLS BELOW A DESIGNATED "BASE TEMPERATURE" OF 65 DEGREES* FAHRENHEIT. FOR EXAMPLE, IF THE MEAN TEMPERATURE ON A GIVEN DAY IS 57 DEGREES, THAT DAY IS SAID TO HAVE 8 HEATING DEGREE DAYS. COOLING DEGREE DAYS. ONE "COOLING DEGREE DAY" IS ASSIGNED TO REPRESENT EACH DEGREE THAT THE TEMPERATURE RISES ABOVE A DESIGNATED "BASE TEMPERATURE" OF 65 DEGREES* FAHRENHEIT. FOR EXAMPLE, IF THE MEAN TEMPERATURE FOR A GIVEN DAY IS 73 DEGREES, THAT DAY IS SAID TO HAVE 8 COOLING DEGREE DAYS. *65 DEGREES FAHRENHEIT HAS BEEN SELECTED AS THE NATIONWIDE STANDARD "BASE TEMPERATURE" AT WHICH (AT LEAST THEORETICALLY) NO HEATING OR COOLING IS REQUIRED. IF ANOTHER BASE TEMPERATURE IS USED IN THESE TABLES, IT WAS SPECIALLY REQUESTED BY THE STATION, AND IS NOTED. NOTE 1. THESE SUMMARIES ARE NOT AVAILABLE FOR PART TIME PERIODS. H - I - 2 USAFETAC/DS-90/223 - Page 298

299 HEATING DEGREE DAYS BASE TEMPERATURE 65 STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PER!OD OF RECORD: JAN 73 - MAR 89 LST TO UTC: o... YEARS I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN MEAN I SD H -2-1 USAFETAC/DS-90/223 - Pane 299

300 F OPERATING LOCATION "A" COOLING DEGREE DAYS USAFETAC,,IHEVILLE NC BASE TEMPERATURE 65 STATION NUMBER: STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA PERIOD OF RECORD: JAN 73 - MAR 89 LST TO UTC: - 9 YEARS I JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN MEAN I SD H-3-1 USAFETAC/DS-90/223 - Page 300

301 ...., ,... A W S STATION NAME: CAMP WALKER/A-805(TAEGU) KOREA FIELD ELEV: 246 FT LATITUDE/LONGITUDE: N E STATION MSC: CLIMATIC BRIEF HOURLY OBS POR: APR 79 - MAR 89 CALL SIGN: RKTG (LIMITED) SUMMARY OF DAY POR: JAN 73 - MAR 89 (PART TIME) HOURS SUMMARIZED: LST SUPERSEDES: NONE JUL 90 LST TO UTC: , o... I MONTH I JAN I FEB I MAR I APR I MAY I JUN I JUL I AUG I SEP I OCT I NOV I DEC I ANN I YOR I EXTRM MAX TEMP (F) I57 j I I I MEAN MAX TEMP (F) MEAN TEMP (F) I MEAN MIN TEMP (F) I I I 65 I I j I 49 I 16 1 EXTRM MIN TEMP (F) I 10 5 I 14 I I 48 I I 23 I 10 I 5 I D/W TEMP GE 90 (F) D/W TEMP GE 80 (F) D/W TEMP LT 33 (F) I 0 0 # D/W TEMP LT 20 (F) 8# HEATING DEGREE DAYS I 1055 I 865 I 646 I 286 I 54 I 4 I 0 0 I 10 I 194 I 540 I 902 I 4556 I 30 I COOLING DEGREE DAYS I 0 I 0 I 0 I 4I I 451 j 479 I 176 I 12 0 I 0 I 1426 I 30 I MEAN DEUPOINT TEMP (F) I 20 I I 41 I I MEAN WET BULB TEMP (F)I 29 I 31 I 40 I 50 I 57 I 66 I 72 I I 33 I 51 I % WCPA (FT) I 400 i 500 I 600 I 650 I 700 I 750 I 750 I 850 I 600 I 550 I 450 i 400 I I MEAN REL HUM 07 LST(%) I I85.4 I I MEAN REL HUM 13 LST(%) I 49.2 I I I I MAX 24HR PRECIP (IN) I MAX PRECIP (IN) MEAN PRECIP (IN) MIN PRECIP (IN) ** ** * I * I * I * I * Dw PRECIP GE.01 (IN) 6 7 I 9I I D/W PRECIP GT.50 (IN) 1 I 1 1 1I 3 I 3 I 4 I 6 4 I 3 I 2 I 1 I 1 30 I 16 MAX 24HR SNFL (IN) I I x SNFL (IN) I I MEAN SNFL (IN) I * I * I * I *I * * I * * I * I * I * I * 1 16 I D/W SNFL GE.1 (IN) I 0 I 0 I 0 I 0 0 I I 1 I D/w SNFL GE 1.5 (IN) I 1 I 1 I 1 I 0 I 0 0 I 0 I 0 I 0 I 0 I 0 I # I 3 I 16 MAX DEY SNO DEPTH (IN) I I 4 I 2 I ;6. PRVLNG WND DIR (DEG) $ MEAN WND SPD (KT5) SI @& MAX WND SPD (KTS) I 55 I 32 I I I I 16 I "... v. '... "..."".i""." 'i'" "."..... "."".i... ".i ".v " i'" ""."...i""."."".i ".".".i.:.i'" ".;....."i SKY COVER GT 5/10 M(I*) * I * I * I * I * I... *I D/U THUNDERSTORMS 1 0I 0 1 I 1 I # D/W FOG (VSBY LT 7 MI) I I 12 I 13 I 12 I 17 I 19 I 17 j 19 I I 16 I LEGEND: ANN = ANNUAL POR/YOR = PERIOD/YEARS OF RECORD D/W = MEAN NUMBER OF DAYS WITH WCPA = WORST CASE MAXIMUM PRESSURE ALTITUDE & = BASED ON LESS THAN FULL MONTHS # = LESS THAN 0.5 DAYS OR TRACE AS APPLICABLE = INSTANTANEOUS PEAK WINDS $ = PERCENTAGE OF CALM WINDS GREATER THAN OR EQUAL TO MEAN = DATA NOT AVAILABLE WIND DIRECTION U C a-\ USAFETAC/DS-90/223 - Page 301