Risi, C., Noone, D., Worden, J., Frankenberg, C., Stiller, G., Kiefer, M., … & Sturm, C. (2012). Process‐evaluation of tropospheric humidity simulated by general circulation models using water vapor isotopologues: 1. Comparison between models and observations. Journal of Geophysical Research: Atmospheres, 117(D5).