The GEWEX Cloud Assessment used the data retrieved from measurements of multi-spectral imagers, multi-angle multi-spectral imagers, IR sounders, and active lidar. These instruments provide different spatial resolution and utilize different parts of the electromagnetic spectrum leading to different retrieval approaches. The complete set of variables is listed in the Database section and the meaning of each variable is explained in detail in the Cloud Assessment Report.
Individual pages for each of the instruments involved can be found below.