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|The Discovery of Global Warming August 2003|
The "geography" of a 1969 climate model. Manabe and Bryan made a globe by putting together three identical segments, each part land and part sea. The polar regions, hard to deal with mathematically, were cut off.
From S. Manabe and K. Bryan, J. Atmospheric Sciences 26 (1969): 786-89 , p. 786.