MONTHLY (new) SUMMARY DATA
--------------------------
LOGICAL RECORD LENGTH - 242 CHARACTERS
THE FOLLOWING PARAMETER LIST AND FORMAT MAY BE USED TO READ A LOGICAL RECORD:
CHARACTER*5 BKIDN
READ (8,10) IDATE,BKIDN,TMEAN,TMAX,TMIN,HMAX,RMINL,CTMEAN,APTMAX,
*WCMIN,HMAXAPT,WCLMINL,RPCP,EPCP,CPCP,EPCPMX,AHS,AVP,APET,AVPD,
*RSV1,TRAD,AMAXTH,AMINRH,IHDD,ICDD,IGDD,NRADV,IRSV2,NOBS,NOBSP,
*N6HE,NPMXMN,NMX,NMN,MXDAT,MNDAT,NDPR,NDTPR,NMAPT,NMWC,NSV,NVPT,
*NPET,NMXRH,NMNRH,MXAPTD,MNWCD,MXPCPD,NDAYS
10 FORMAT(1X,I6,A5,10F5.1,3F7.1,F5.1,4F5.2,F6.2,F5.2,2F5.0,3I5,I3,4I4,
*3I3,2I8,9I3,3I8,I3)
THE FOLLOWING FIELDS ARE AVAILABLE:
0. BLANK - 1X
1. IDATE-YEAR AND MONTH OF DATA, IN FORM YYYYMM.
FORMAT - I6
2. BKIDN- 5 CHARACTER STATION IDENTIFIER. THE 5 CHARACTERS
ARE THE WMO BLOCK STATION NUMBER WHEN ASSIGNED OR 99 FOLLOWED
BY THE 3 CHARACTER AIRWAYS CALLSIGN WHEN NO WMO BLOCK STATION
HAS BEEN ASSIGNED.
FORMAT - A5
3. TMEAN - AVERAGE DAILY MEAN TEMPERATURE COMPUTED FROM ALL
PAIRED DAILY MAXIMUM AND MINIMUM TEMPERATURES.
UNITS - DEGREES CELSIUS.
FORMAT - F5.1
MISSING - -99.9
4. TMAX - AVERAGE DAILY MAXIMUM TEMPERATURE.
UNITS - DEGREES CELSIUS.
FORMAT - F5.1
MISSING - -99.9
5. TMIN - AVERAGE DAILY MINIMUM TEMPERATURE.
UNITS - DEGREES CELSIUS.
FORMAT - F5.1
MISSING - -99.9
6. HMAX - THE HIGHEST MAXIMUM TEMPERATURE REPORTED DURING MONTH
UNITS - DEGREES CELSIUS.
FORMAT - F5.1
MISSING - -99.9
7. RMINL - THE LOWEST MINIMUM TEMPERATURE REPORTED DURING MONTH
UNITS - DEGREES CELSIUS.
FORMAT - F5.1
MISSING - -99.9
8. CTMEAN - THE REPORTED MONTHLY CLIMATE TEMPERATURE.
UNITS - DEGREES CELSIUS.
FORMAT - F5.1
MISSING - -99.9
9. APTMAX - AVERAGE MAXIMUM APPARENT TEMPERATURE.
UNITS - DEGREES CELSIUS
FORMAT - F5.1
MISSING - -99.9
10. WCMIN - AVERAGE MINIMUM WIND CHILL TEMPERATURE.
UNITS - DEGREES CELSIUS
FORMAT - F5.1
MISSING - -99.9
11. HMAXAPT- HIGHEST DAILY MAXIMUM APPARENT TEMPERATURE DURING MONTH
UNITS - DEGREES CELSIUS
FORMAT - F5.1
MISSING - -99.9
12. WCLMINL- LOWEST DAILY MINIMUM WIND CHILL TEMPERATURE DURING MONTH
UNITS - DEGREES CELSIUS
FORMAT - F5.1
MISSING - -99.9
13. RPCP - TOTAL REPORTED PRECIPITATION FOR MONTH.
UNITS - MILLIMETERS
FORMAT - F7.1
MISSING - -99.9
14. EPCP - TOTAL PRECIPITATION INCLUDING ESTIMATES FOR ANY PERIODS
THAT REPORTED AMOUNTS WERE NOT AVAILABLE.
UNITS - MILLIMETERS
FORMAT - F7.1
MISSING - -99.9
15. CPCP - TOTAL PRECIPITATION REPORTED IN CLIMAT MESSAGE.
(NOTE--CLIMAT REPORTS PRECIPITATION TO THE NEAREST WHOLE
MILLIMETER. THE CAC USES ITS PRECIPITATION REPORTED
TO A TENTH WHEN THE DIFFERENCE COULD HAVE BEEN DUE
TO ROUNDING OF THE CLIMAT VALUE.
UNITS - MILLIMETERS
FORMAT - F7.1
MISSING - -99.9
16. EPCPMX - MAXIMUM DAILY PRECIPITATION INCLUDING ESTIMATES.
UNITS - MILLIMETERS
FORMAT - F5.1
MISSING - -99.9
17. AHS - AVERAGE HOURS OF SUNSHINE
UNITS - HOURS
FORMAT - F5.2
MISSING - -9.99
18. AVP - AVERAGE VAPOR PRESSURE
UNITS - MILLIBARS
FORMAT - F5.2
MISSING - -9.99
19. APET - AVERAGE PAN EVAPORTRANSPORATION
UNITS - MILLIMETERS
FORMAT - F5.2
MISSING - -9.99
20. AVPD - AVERAGE VAPOR PRESSURE DEFICIT
UNITS - MILLIBARS
FORMAT - F5.2
MISSING - -9.99
21. RSV1 - RESERVED
FORMAT - F6.1
MISSING - -99.9
22. TRAD - AVERAGE TOTAL RADIATION
UNITS -
FORMAT - F5.2
MISSING - -9.99
23. AMAXRH - AVERAGE MAXIMUM RELATIVE HUMIDITY.
UNITS - PERCENT
FORMAT - F5.0
MISSING - -999.
24. AMINRH - AVERAGE MINIMUM RELATIVE HUMITITY.
UNITS - PERCENT
FORMAT - F5.0
MISSING - 999.
25. IHDD - TOTAL HEATING DEGREE DAYS.
FORMAT - I5
MISSING - -999
26. ICDD - TOTAL COOLING DEGREE DAYS.
FORMAT - I5
MISSING - -999
27. IGDD - TOTAL GROWING DEGREE DAYS.
FORMAT - I5
MISSING - -999
28. NRADV - NUMBER OF RADIATION VALUES
FORMAT - I3
MISSING - 0
29. IRSV2 - RESERVED
FORMAT - I4
MISSING - 0
30. NOBS - NUMBER OF OBSERVATIONS
FORMAT - I4
MISSING - 0
31. NOBSP - NUMBER OF OBSERVATIONS WITH PRECIPITATION
FORMAT - I4
MISSING - 0
32. N6HE - NUMBER OF 6 HOUR PERIODS THAT PRECIPITATION ESTIMATED
FORMAT - I4
MISSING - 0
33. NPMXMN - NUMBER OF PAIRED MAXIMUM AND MINIMUM TEMPERATURES
FORMAT - I3
MISSING - 0
34. NMX - NUMBER OF DAILY MAXIMUM TEMPERATURES
FORMAT - I3
MISSING - 0
35. NMN - NUMBER OF DAILY MINIMUM TEMPERATURES
FORMAT - I3
MISSING - 0
36. MXDAT - DATE THE MAXIMUM MONTHLY TEMPERATURE OCCURRED
FORMAT - I8
MISSING - -999
37. MNDAT - DATE THE MINIMUM MONTHLY TEMPERATURE OCCURRED
FORMAT - I8
MISSING - -999
38. NDPR - DAYS MEASURABLE PRECIPITATION REPORTED
[apparently includes days with a trace and days
with zero precip as evidenced by NDPR being
almost always equal to the days in the month;
so essentially is a count of days with non-missing
precip amount]
FORMAT - I3
MISSING - 0
39. NDTPR - NUMBER OF DAYS A TRACE OF PRECIPITATION REPORTED
FORMAT - I3
MISSING - 0
40. NMAPT - NUMBER OF DAILY MAXIMUM APPARENT TEMPERATURES
FORMAT - I3
MISSING - 0
41. NMWC - NUMBER OF DAILY MINIMUM WIND CHILL VALUES
FORMAT - I3
MISSING - 0
42. NSV - NUMBER OF DAILY SUNSHINE VALUES
FORMAT - I3
MISSING - 0
43. NVPT - NUMBER OF DAILY VAPOR PRESSURE VALUES
FORMAT - I3
MISSING - 0
44. NPET - NUMBER OF DAILY PAN EVAPORATION VALUES
FORMAT - I3
MISSING - 0
45. NMXRH - NUMBER OF DAILY MAXIMUM RELATIVE HUMIDITY VALUES
FORMAT - I3
MISSING - 0
46. NMNRH - NUMBER OF DAILY MINIMUM RELATIVE HUMIDITY VALUES
FORMAT - I3
MISSING - 0
47. MXAPTD - DATE MONTHLY MAXIMUM APPARENT TEMPERATURE OCCURRED
FORMAT - I8
MISSING - -999
48. MNWCD - DATE MONTHLY MINIMUM WIND CHILL OCCURRED
FORMAT - I8
MISSING - -999
49 MXPCPD - DATE THE MAXIMUM DAILY PRECIPITATION OCCURRED
FORMAT - I8
MISSING - -999
50 NDAYS - NUMBER OF DAYS IN THE MONTH
FORMAT - I3
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Definitions of various parameters
Climat temperature is the final corrected monthly mean temperature reported
by a station.
Apparent temperature is an equivalent temperature that measures the degree
of human discomfort due to combined heat and humidity. It is based on studies
of human physiology and textile (clothing) science. The apparent temperature
is designed so that it exceeds the air temperature when humidity is relatively
high. The apparent temperature does not consider the effects of air
movement (wind speed) or exposure to sunshine.
Wind chill is an equivalent temperature that measure the degree of physical
discomfort and stress from combined cold and wind. It was developed from
physiological studies of the of the rate of heat loss for various combinations
of ambient temperature and wind speed. The wind chill equals the air
temperature when the wind speed is 4 MPH or less. At higher wind speeds, the
wind chill is lower than the air temperature and measures the
increased rate of heat loss from the body under windy conditions.
Pan evaporation is the amount of moisture which is transformed from water to
vapor as measured in a cylindrical pan (class-A pan) with a depth of ten
inches and a diameter of forty-eight inches. The pan is filled with water
to a depth of eight inches and periodically measured. When the water level
drops to seven, the pan is refilled.
Total radiation is the sum of direct solar radiation also known as the beam
component and scattered radiation. Direct radiation is beamed straight from
the sun to the earth with no deviation, while scattered radiation takes a less
direct route from sun to earth.
Vapor pressure deficit is the difference between the saturation vapor pressure
and the actual vapor pressure.
A heating degree day is an index used to quantify the amount of heating
required for houses or businesses for a given day. Heating degree days for a
given period are the summations of negative differences between the mean daily
temperature (F) and the base temperature of 65F for that period.
The heating year extends from July 1 to June 30.
A cooling degree day is an index used to quantify the amount of cooling
required for houses or businesses for a given day. Cooling degree days
for a given period are the summations of positive differences between the
mean daily temperature (F) and the base temperature of 65F for that period.
The cooling year extends from January 1 to December 31.
A growing degree day is an index used to express crop maturity. Growing
degree days for a given period are the summations of the positive
differences between the mean daily temperature (F) and the base temperature
of 50F for that period. Temperatures above 86F are set equal to 86.
The growing season extends from March 1 to November 2.
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