AdamW wrote:
>
>> Isn't there also the "Snowball Earth" state switch? Both to the
>> "frozen death" state, and back again after enough CO2 accumulates?
>>
>> --
>> Phil Hays
>
> Isn't that dependant on the ice-albedo feedback, which is excluded
> from climate sensitivity?
Sea ice and snow cover are both counted, which probably could achieve
the same end. But that's a long way from the present day situation. IIRC
someone on RC said that they thought a venus-like runaway was
impossible, but I'm not sure what basis that had.
James
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