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DAILY (AB) SUMMARY RECORD
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ORIGINAL LOGICAL RECORD BEFORE SEP 1982 IS BLANK-FILLED TO 88 CHARACTERS
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THE FOLLOWING PARAMETER LIST AND FORMAT MAY BE USED TO READ A LOGICAL RECORD:
DIMENSION WEA(8)
CHARACTER IBUF*13000
READ(IBUF(ib:),10) iyr,imo,idy,idwmo,call,xlat,xlon,elev,
*tmax,maxf,tmin,minf,pcpt,npcptf,pcptt,wea,nobs,nobspp
10 format(3i2,1x,i5,1x,a4,2f6.2,f5.0,f5.1,i2,f5.1,i2,f5.1,
* i2,a1,8a1,2i2)
ORIGINAL LOGICAL RECORD LENGTH FROM SEP 1982 ON IS 88 CHARACTERS
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THE FOLLOWING PARAMETER LIST AND FORMAT MAY BE USED TO READ A LOGICAL RECORD:
DIMENSION WEA(8)
CHARACTER IBUF*13000
READ(IBUF(ib:),20) iyr,imo,idy,idwmo,call,xlat,xlon,elev,
*tmax,maxf,tmin,minf,pcpt,npcptf,pcptt,wea,nobs,nobspp,pcptr,pcpte,
*nob6
20 format(3i2,1x,i5,1x,a4,2f6.2,f5.0,f5.1,i2,f5.1,i2,f5.1,
* i2,a1,8a1,2i2,2f6.1,i2)
FOR ORIGINAL DATA EXPANDED TO 102 CHARACTERS FOR COLUMN FRIENDLY FORMAT
(format produced by executing 'read_dlyAB.f' on data formatted as above)
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DIMENSION WEA(8)
CHARACTER IBUF*13000
READ(IBUF(ib:),30) iyr,imo,idy,idwmo,call,xlat,xlon,elev,
*tmax,maxf,tmin,minf,pcpt,npcptf,pcptt,wea,nobs,nobspp,pcptr,pcpte,
*nob6
30 format(1x,3i3,1x,i5,1x,a4,2f7.2,f6.0,f6.1,i3,f6.1,i3,f6.1,
* i3,1x,a1,1x,8a1,2i3,2f7.1,i3)
FIELD NAME FIELD DEFINITION
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1. GMT-DATE Characters 1-6 I6
The Greenwich Mean Time data date.
YYMMDD = Year, Month, and Day.
FILLER Character 7 1X
Blank only.
2. WMO-STATION-ID Characters 8-12 I5
The World Meteorological Organization (WMO)
Station Identification. A WMO 5-digit Station
Identification. 99999 = a 3 or 4 letter AIRWAYS-
CALLSIGN is present in characters 14-17.
FILLER Character 13 1X
Blank only.
3. AIRWAYS-CALLSIGN Characters 14-17 A4
A 3 or 4 character AIRWAYS-CALLSIGN, or blanks.
Two combinations of WMO identifier and callsign
are possible:
A. WMO ID is present in characters 8-12,
so blanks will appear in AIRWAYS-CALLSIGN.
B. A 99999 in WMO-STATION-ID indicates a
3 or 4 digit airways callsign will be
present.
4. LATITUDE-CODE Characters 18-23 I6
The latitude north or south of a specified station.
Latitude is the angular distance north or south
from the earth's equator, measured through
90 degrees. Negative values indicate southern
latitudes. range bb0000 to b-9000.
5. LONGITUDE-CODE Characters 24-29 I6
The longitudinal position of a specified station.
Longitude is the arc or portion of the earth's
equator intersected between the meridian of a given
place and the prime meridian (as from Greenwich,
England). Range b00000 to b36000 degrees west
from Greenwich expressed to nearest .01 degrees
of longitude.
6. ELEVATION Characters 30-34 I5
The station elevation relative to mean sea level
expressed in whole meters.
7. MAX-TEMPERATURE Characters 35-39 I5
The maximum temperature which occurred during the
past 24 hours expressed in degrees Celsius to
nearest .1 degree.
bb999 = may be estimated from reported synoptic
air temperature if sufficient data exist.
b9999 = missing temperature.
8. MAX-TEMP-FLAG Characters 40-41 I2
A 2-digit maximum temperature flag.
First digit
0 = valid extreme temperature report.
1 = invalid extreme temperature report.
2 = missing extreme temperature report, value is
estimated.
3 = nonreporting time, value replaced by estimate
since 00 zulu.
Second digit
0-8 = number of missing air temperatures in
validation.
9 = extreme temperature is missing.
9. MIN-TEMPERATURE Characters 42-46 I5
The minimum temperature which occurred during the
past 24 hours expressed in degrees Celsius to
nearest .1 degree.
bb999 = may be estimated from reported synoptic
air temperature if sufficient data exist.
b9999 = missing temperature.
10. MIN-TEMP-FLAG Characters 47-48 I2
A 2-digit minimum temperature flag. Read description
of maximum temperature flags in characters 40-41.
The same description applies to MIN-TEMP-FLAG.
11. TOTAL-DAILY-PRECIP Characters 49-53 I5
The total precipitation reported during the 24-hour
period. This amount may include precipitation
which fell during the previous 24-hour period but
was not included in the previous day's summary
record. Expressed in millimeters to nearest .1
of an mm.
12. 24-HR-PRECIP-FLAG Characters 54-55 I2
A 2 digit 24-hour precipitation flag.
First digit
0 = no precipitation event in previous 24 hours.
1 = precipitation event occurred in previous
24 hours.
9 = precipitation missing.
Second digit (number of 3-hour periods not covered
in previous 24 hours)
8-9 = no estimate of amount possible.
13. PRECIP-TRACE-FLAG Character 56 A1
A precipitation trace flag.
M = precipitation amount missing.
T = trace of precipitation in past 24 hours,
set to T when digit 1 of 24-hour precipi-
tation flag is '1' and the 24-hour
precipitation amount equals zero.
b = neither of the above.
14. PRESENT/PAST-WEA-FLAGS Characters 57-64 8A1
The present and/or past weather flags. There are
(see tables below; eight 1-character flags indicating the general
note the change form of present weather for each of the 8 synoptic
in present weather reporting times, or the past weather if present
character flags weather is not available. Position of the flag
beginning in 1982) from left to right indicates the time of observa-
tions; i.e., 00Z = position 1, 03Z = position 2,
etc. A '1' indicates neither present nor past
weather was reported. Present weather character
flags are derived from NMC Office Note 124, Code
Table 4, and past weather flags from Office Note
124, Code Table 5.
15. NUMBER-OF-OBS-RCVD Characters 65-66 I2
The total number of synoptic observations received.
16. NMBR-OBS-REPORTING Characters 67-68 I2
PRESENT/PAST-WEA The total number of synoptic observations reporting
the occurrence of present and/or past weather.
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The following parameters are not included prior to Sep 1982
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17. TOT-PRECIP-RPTD- Characters 69-74 I6
DURING-24HR The total precipitation which fell and was reported
during the 24-hour period. Expressed in milli-
meters to nearest .1 of a millimeter.
18. TOT-ESTMTD-PRECIP Characters 75-80 I6
The total precipitation which was estimated and
reported during any periods when reported amounts
were not available. Expressed in millimeters
to nearest .1 of a millimeter.
19. NMBR-6HR-PERIODS- Characters 81-82 I2
DURING-24HR The number of 6-hour periods for which reported
amounts were not available and were estimated.
FILLER Characters 83-88 6X
Blanks only.
PRESENT WEATHER FLAG TABLE (up through 1981)
0 1 2 3 4 5 6 7 8 9
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00 0 0 0 0 K H D D D D
10 F F F T 0 R R T Q T
20 L R S S Z R S A F T
30 D D D D D D B B B B
40 F F F F F F F F Z Z
50 L L L L L L Z Z R R
60 R R R R R R Z Z S S
70 S S S S S S S S S S
80 R R R S S S S A A A
90 A T T A A T A T T A
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TABLE OF PRESENT WEATHER CHARACTER FLAGS (beginning in 1982)
DERIVED FROM NMC OFFICE NOTE 124, CODE TABLE 4.
1'S DIGIT OF PRESENT WEATHER
0 1 2 3 4 5 6 7 8 9
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10'S 00 ! 0 0 0 0 K H D D D D
DIGIT 10 ! M G G U V X X T Q Y
OF 20 ! L R S S Z R S A F T
PRESENT 30 ! D D D D D D J J B B
WEATHER 40 ! F F F F F F F F E E
50 ! L L L L L L Z Z R R
60 ! R R R R R R Z Z S S
70 ! S S S S S S I S C P
80 ! R R R S S S S S S A
90 ! A T T A A T A T T A
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PAST WEATHER FLAG TABLE
0 = 0
1 = 0
2 = 0
3 = B Blowing Dust
4 = F Fog
5 = L Drizzle
6 = R Rain
7 = S Snow
8 = W Showers
9 = T Thunderstorms
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| Updated 22 December 2005 |