Solar radiation enters the Earth's atmosphere with a portion being scattered by clouds and aerosols.

Processing, archiving and distributing Earth science data
at the NASA Langley Research Center

What is the file naming convention?

NFOV narrow field-of-view   2.5 degree resolution
MFOV-NF medium field-of-view numerical filter 5.0 degree resolution
WFOV-NF wide field-of-view numerical filter 5.0 degree resolution
MFOV-SF medium field-of-view shape factor 10.0 degree resolution
WFOV-SF wide field-of-view shape factor 10.0 degree resolution

Sample Filename: s4gn_wnf5._yymm_s
"yy" represents the year (e.g., 89 - 1989);
"mm" represents the number value of a month (e.g., 01 = January, 12 = December)
"s" represents the satellite code:
1 = NOAA-9
2 = ERBS
3 = NOAA-10
4 = NOAA-9/NOAA-10
5 = ERBS/NOAA-9
6 = ERBS/NOAA-10
7 = NOAA-9/ERBS/NOAA-10