4.23 - Daily Minimum Temperature File (*.tmn)

The daily minimum temperature file (*.tmn) contains minimum daily temperature values in degrees Fahrenheit for each climate station for years t2nyr1 through t2nyr2, described below. The daily minimum temperature file is used for the Penman-Monteith, Modified Hargreaves, and ASCE Standardized Penman-Monteith daily ET methods (flag1= 3, 4, or 5, respectively in the model control file, Section 4.4). The data must be in calendar year format. The file must contain data for all years in the simulation between nyr1 and nyr2, defined in the model control file (see Section 4.4). There must be a one-to-one correspondence between the climate stations listed in the climate station data file (*.cli) and the climate station data in the daily minimum temperature file. An example is provided in Appendix A. Note that daily climate data can not be processed with a monthly consumptive use method (e.g. Modified Blaney-Criddle, Original Blaney-Criddle, or Pochop).

Row-Data Program Variable Description
Row 1 Format (6x, i4, 11x, i4, 7x, a3)
1-1 t1nyr1 Beginning year of minimum temperature data
1-2 t1nyr2 Ending year of minimum temperature data
1-3 idum3 CYR for calendar year
Row 2 Format (i4, 2x, i2, 2x, a12, 31(f6.0))
2-1 yr Year
2-2 mo Month
2-3 tid Temperature station ID
2-4 tmn(1-31) Minimum temperature for days 1-31 in month mo

Repeat for the number of temperature stations.

Repeat for each month in year yr.

Repeat for each year t2nyr1 through t2nyr2.