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Subject: (urth) PLAN[E]T ENGINEERING 101
Date: Tue, 26 Nov 2002 10:17:12 -0700
From: "Dan'l Danehy-Oakes" 


It seems to me that we can explain the difference in climate between=20
Green and Blue, without resorting to a radical difference in their=20
respective orbits ... for example, by invoking a difference in the=20
chemical composition of their atmospheres. Suppose that Green simply=20
has a very high percentage of "greenhouse gasses" -- including but=20
not necessarily limited to CO2? And that Blue has a relatively low=20
percentage thereof? Or put it in terms of albedo, and say that Blue's
is higher than Green's, so that the same amount of incident solar
raditation produces a higher degree of insolation. Will that not
produce the -- relatively small; they're both "life zone" planets! --=20
difference in their average surface temperature?=20




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