# 4.25 - Daily Solar Radiation File (*.sol)

The daily solar radiation file (*.sol) contains daily solar radiation in langleys for each climate station for years rnyr1 through rnyr2, described below. The daily solar radiation 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 solar radiation file. An example is provided in Appendix A.

Row-Data Program Variable Description
Row 1 Format (6x, i4, 11x, i4, 7x, a3)
1-1 rnyr1 Beginning year of solar radiation data
1-2 rnyr2 Ending year of solar radiation 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 Solar radiation station ID
2-4 rs2(1-31) Solar radiation for days 1-31 in month mo

Repeat for the number of solar radiation stations.

Repeat for each month in year yr.

Repeat for each year rnyr1 through rnyr2.