On Nov 26, 2:15 pm, Zeke Hausfather <[EMAIL PROTECTED]> wrote:
> What exactly is the mechanism that causes the poles to warm faster
> than the tropics as a result of climate change? Is it simply the lack
> of transpiration (due to the lack of vegetative matter) limiting
> latent heat transfer? Or is there actually greater "forcing" in the
> arctic due to some mechanism?
>
> Inquiring minds want to know.
RealClimate covered this a while back:
"Polar amplification is thought to result primarily from positive
feedbacks from the retreat of ice and snow. There are a host of other
lesser reasons that are associated with the atmospheric temperature
profile at the poles, temperature dependence of global feedbacks,
moisture transport, etc. Observations and models indicate that the
equilibrium temperature change poleward of 70N or 70S can be a factor
of two or more greater than the global average."
>From
>http://www.realclimate.org/index.php/archives/2006/01/polar-amplification/langswitch_lang/in
Cheers,
Adam
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