The HURSAT-AVHRR derives from NOAA's Advanced Very High Resolution Radiometer and balances the weaknesses of the HURSAT-B1 data. Specifically, the HURSAT-AVHRR spatial resolution is 4km. Also, all observations originate from one instrument (as opposed to a variety of instruments in the B1 record). However, the temporal resolution is limited to 2 to 8 observations per day, depending on the satellite configuration.
Current version is v05.