Historic GCIP/GAPP SRB data can be accessed via FTP. Please regist first. All files in the archive are compressed using the utility "gzip". (NOTE: you might need to save the file manually.) For detailed information on file names, file structure, grid and sample Fortran read programs, click the word Readme.

The following file types are available:

• Instantaneous
• Hourly average
• Daily average
• Monthly average

The following parameters are available:

• Surface downward flux (sda)
• photosynthetically active radiation (PAR)
• top of atmosphere downward flux (tda)
• top of atmosphere upward flux (tua)
• cloud cover fraction (ccf)
• Surface Skin Temperature (stp, available from 1997/05)

Note: The NOAA/NESDIS algorithm was used, and it is applied for daytime only.

• Surface albedo (only availabe for 1997 and 1998 )
• Diffuse PAR (only for 1998)