Excerpted from below--
>What is odd is that while we may expect more summer days above X
>degrees, we also expect more winter days below -X degrees. Here in
>spring the day temperature may reach 35 degrees celcius and still
>drop to 5 degrees by the next morning.
Lower water vapor content of the atmosphere, which accompanies global
cooling,
manifests as glacier shrinkage and record high and low. In the desert huge
diurnal swings are the norm.
It is obvious as to why when you look at it though.
Glacial shrinkage is another one that is a "gotcha" for many people.
Kirk
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 20, 2001 7:48 AM
To: biofuel@yahoogroups.com
Subject: Global Warming 101: was Re: [biofuel] Re: Climate Change
Global warming is an interesting term. The greenhouse effect,
relative to the way man's activities are altering the composition of
the atmosphere, surely must alter the way heat is transfered from
near the surface of the earth to the upper atmosphere. If the ground
warms significantly more in summer, then the mixing effects, as heat
is transfered to and from polar regions, would likely be more
violent. Not that the storms of the Southern Ocean aren't violent now.
What is odd is that while we may expect more summer days above X
degrees, we also expect more winter days below -X degrees. Here in
spring the day temperature may reach 35 degrees celcius and still
drop to 5 degrees by the next morning. Naturally you need to closely
watch the opening of the glasshouse. My experience of the tropics is
that this diurnal range doesn't occur and I gather that it would be
unusual in temperate regions too. Our subtropical weather has been
quite unpredictable for decades, particularly rainfall. Tropical
weather, especially regards monsoons, is also fickle. Unpredictable
cycles of drought and flood affect productivity and viability.
Places the consider a week without rain a drought may be in for a
shock. There may be mitigating effects, like will the thawing of
continental ice be balanced by more atmospheric water and more
rainfall on land. Melting sea ice has no effect on volume and the
idea that oceans can be effectively heated enough from above to
expand significantly is incredible. There seem to be more conflicting
processes than I can deal with, but even so the question on global
warming is not whether it will, or is happening, rather what changes
will we observe. I feel that it is more subtle than a measurable
change in average daily temperatures and at the same time more
worrying..
Regards Harry.
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