Moradi, Isaac, Ralph R. Ferraro, Brian J. Soden, Patrick Eriksson, and Phillip Arkin (2015), Retrieving Layer-Averaged Tropospheric Humidity From Advanced Technology Microwave Sounder Water Vapor Channels, IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 53(12), 6675-6688, doi:10.1109/TGRS.2015.2445832.