Introduction
Supported Data Format
Pygac reads AVHRR GAC (Global Area Coverage), LAC (Local Area Coverage) and FRAC (Full Resolution Area Coverage) level 1b data from NOAA, which is described in the POD (NOAA-14 and before) and KLM (NOAA-15 and following) user guides. The data can be obtained from NOAA CLASS, where you can also find a comprehensive introduction.
Note
Pygac can only read AVHRR data with 10 bits/pixel. This can be specified in your NOAA CLASS order or user preferences (see screenshot below).
Supported Sensors
Pygac currently supports AVHRR generations 1-3 onboard NOAA (TIROS-N, NOAA-6 and onwards) and MetOp satellites.