Re: Global Warming (was New Medit List Members?

Doobieous wrote:
> 
> I'm involved in another online forum and everyone
> there is denying global warming, citing recent
> examples of colder than usual winters. WHat they
> forget is that global warming simply means warmer
> global AVERAGE temperatures. The effects of weather
> vary when you get down to microclimates, so i dont see
> how it discounts Global warming. What is evident is
> earlier spring thaws, as the thaws that are causing
> problems for Polar bears.
> 
> I've read that what Global warming will do for the
> northern hemisphere is essentially move climate bands
> northward. So Canada will have a climate more like the
> great plains. I assume Coastal California will assume
> a more Southern California like climate possibly as
> far north as San Francisco, and Southern California
> will become more arid.

 Barry 
Your conjecture about the probable migration of climate bands appears to
be shared by the experts I have read.

The implication of this for the more northern parts of Canada is
apparently pretty horrendous even in the short term. I recently saw a TV
documentary about life in the far north of America which gave the latest
on both men and animals and how it was already disrupting their whole
lifestyle. The people, for instance, can no longer build igloos
successfully in case of need because of the deteriorated snow quality
and when they go to do their winter hunting their mobility is curtailed
because the snow is not strong and deep enough for the usual length of
time to hold up their vehicles. The are talking of the need for some
sort of hybrid transport which can change effectively from snow to
slush.

The plight of the polar bears is even more serious, as they depend on
good solid iceflows right through winter to be able to find their food
and now these are breaking up early stranding either the bears or their
food animals and upsetting the whole well-balanced ecosystem.

 The doco implied this could well lead to the final demise of the bears
a few years down the track and no doubt equally disrup the life of other
local species.

I suppose similar problems are developing across the top of Eurasia.

Moira
-- 
Tony & Moira Ryan,
Wainuiomata, North Island, NZ.     Pictures of our garden at:-
http://mywebpages.comcast.net/cherie1/Garden/TonyandMoira/index.htm
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