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The Discovery of Global Warming                      May 2010
A "family tree" of some of the more important Atmospheric General Circulation Models through the 1980s, by Paul Edwards. See also Kuma et al. (2023), Fig. 2, for a graphic geneaology of the atmospheric physics codes used in 167 models ca.1980-2022, identifying 12 families.

CCM: NCAR's Community Climate Model; ECMWF: European Centre for Medium-Range Weather Forecasts; GFDL: Geophysical Fluid Dynamics Laboratory (Manabe); GISS: Goddard Institute for Space Sciences (Hansen); NCAR: National Center for Atmospheric Research; UCLA: University of California, Los Angeles (Mintz, Arakawa).
Copyright © 2010 Paul Edwards, reproduced by permission. See Edwards (2010).