Re: Smoke one for the Wilkins Ice Shelf
- From: "Tom S." <t.m.s.work@xxxxxxx>
- Date: Sun, 30 Mar 2008 16:06:42 -0700
"Miss Elaine Eos" <Misc@xxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
In article <BjQHj.7975$QW6.5696@trnddc07>,
"Paul M. Cook" <pmcook@xxxxxxx> wrote:
Apparently this happened in the 1980s as well. I don't decry global
warming...just about how much we're truly contributing towards it.
Well consider that the ice in question, 250 square miles in area and 1
thick, is estimated to be more than a million years old and it is just
melting, that says a lot about what has been happening in the last 30
I think the point, actually, is to question just what, exactly, it says
about what has been happening in the last 30 years!
That would be an unprecedented even. Nowhere in the geologic history has
such instability been recorded in as little as 30 years, it usually has
in the order of tens of thousands of years.
* Geologic history is RIFE with incidents on a far bigger scale in much
shorter time frames. The Earth is a rather unstable planet.
* 250 cubic miles of ice over 10s of 1000s of years isn't "instability",
it's just "ice melting."
And it's not even melting (it never gets over 0C) - it's CALVING, then it
drifts into warmer waters.
* Try not to get too impressed with big numbers. If the Earth were the
size of a decent apple (like a big red delicious, let's say), the
amounts by which you're so impressed are smaller than the hole you would
make with a shirt pin. No, it's not "nothing", but neither has the
apple been peeled...
?The shattered part of the Wilkins ice sheet was 160 square miles in area,
which is just 0.01% of the total current Antarctic icecover (just 0.003% of
the extent last September), like an icicle falling from a snow and ice
covered roof. And this winter is coming on quickly. The latest satellite
images and reports suggest the ice has already refrozen around the broken
pieces. In fact the ice is returning so fast, it is running an amazing 60%
ahead (4.0 vs 2.5 million square km extent) of last year when it set a new
record. The total ice extent is already approaching the second highest level
for extent since the measurements began by satellite in 1979 and just a few
days into the Southern Hemisphere fall season and 6 months ahead of the
peak. We are very likely going to exceed last year?s record [for Southern
Hemisphere ice extent]. Yet the world is left with the false impression
Antarctica?s ice sheet is also starting to disappear,? - Meteorologist
(Aleo served as the first Director of Meteorology at The Weather Channel,was
the Chief Meteorologist at Weather Services International Corporation and
served as chairman of the American Meteorological Society's (AMS) Committee
on Weather Analysis and Forecasting.)
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