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DP Veteran
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- Sep 20, 2016
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Again.
Earth albedo changes with the type of land coverage.
Land coverage may be a positive or a negative feedback, depending on changes in precipitation. If higher CO2 levels and consequent warming lead to increased vegetation, then the resulting drop in albedo would be a positive feedback. But if higher temperatures lead to more high-albedo deserts, it would be a negative feedback. Either way, it's not likely to be as strong a feedback as water vapour or ice albedo.