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Old February 16th 13, 06:15 PM posted to uk.sci.weather
Alastair McDonald[_2_] Alastair McDonald[_2_] is offline
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Default Is a warmer world a windier one?

"Tudor Hughes" wrote in message
...

A friend of mine (not a weather nut) takes it as axiomatic that a
warmer world would be a windier one (including the UK) whereas I am
not convinced that this is necessarily so. In fact, I can think of
good reasons why the opposite might be true. The temperature gradient
between pole and equator is less due to the disproportionate warming
in high latitudes and this will reduce the vigour of the circulation
and probably increase blocking. That, of course is hardly the last
word on the subject so does anyone here have any special knowledge of
what climate models predict or can point me to some literature?

Tudor Hughes, Warlingham, Surrey.


There was a RMetS meeting last Wednesday where the evidence from earlier
warm periods in the Earth's history were compared with the results of model
simulations. The models seem to be unable to replicate the polar
amplification of temperature found in the temperature proxies. So I would
not trust the models in getting the changes in the wind correct. The
abstracts
of the talks are available he
http://www.rmets.org/events/lessons-...-palaeo-record

In the geological past, the Arctic region was sub tropical with crocodiles
swimming around Elsmere Island. So the temperature contast between the poles
and the topics was much less. Howver there would have been more likelyhood
of hurricanes.

Cheers, Alastair.