There are single satellite and combined-satellite scanner products. The best source for these data is to order the ERBE scanner CD which gives all the S4G monthly mean 2.5 degree gridded data from both single satellite and combined-satellite product in ASCII format. Also, ordering the S4G HDF data online and using the ncdump utility to perform a straight ASCII dump is another option. NOAA-9 and NOAA-10 provide global coverage at different local sampling times. These do not provide the full diurnal coverage, which can affect the quality of the shortwave and longwave estimate. ERBS covers all 24-hour local time, but only for regions between 60N and 60S.
Scanner and Nonscanner instruments are processed independently using separated instrument calibration procedure and data processing algorithm. Because of these differences, it is best to work with these two data sets separately.
- ERBE/ERBS scanner operated for ~5 years: November 1984 - February 1990
- ERBE/NOAA-9 scanner operated for ~2 years: February 1985 - January 1987
- ERBE/NOAA-10 scanner operated for ~2 years: January 1987 - April 1989