View Full Version : Global warming news
DrSmellThis
11-08-2004, 11:16 AM
http://www.cnn.com/2004/TECH/scienc
e/11/08/globalwarming.reut/index.html (http://www.cnn.com/2004/TECH/science/11/08/globalwarming.reut/index.html)
belgareth
11-08-2004, 11:58 AM
A while back I read an article
that suggested one of the possible reasons for the faster than expected rate of melt was soot from the coal and wood
burning in Europe. The dark grey ash reflects less of the sun's heat causing the ice to melt more rapidly. If this
is true, part of the solution would be cleaner forms of energy. It also makes me wonder about the relationship of
volcanic activity. I'm not trying to minimize the impact of greenhouse gasses, which is significant, but feel we
need to understand why the rate of temp increase is so much greater in order to figure out how to control it.
DrSmellThis
11-08-2004, 01:20 PM
Agreed. It is a very bad
problem, regardless. People need to wake up to how fragile the balance of the Earth's climate is regarding being
friendly to human life.
belgareth
12-04-2004, 07:58 AM
How Global Warming Can Lead to a Big Chill
Science - Reuters
WASHINGTON
(Reuters) - Global warming could lead to a big chill in the North Atlantic, at least if history is anything to go
by, researchers reported on Friday.
They published evidence to
support a popular theory that rising temperatures caused a big melt of polar ice 8,200 years ago, causing a
freshwater flood into the salty North Atlantic.
This would have
changed the flow of the balmy Gulf Stream and in just a few years, average temperatures plummeted, ushering in a
deep freeze that lasted a century or more, researchers have proposed.
Writing in the Dec. 11 issue of Geophysical Research Letters, Torbjorn Tornqvist, an assistant professor of
earth and environmental sciences at the University of Illinois at Chicago, says he has evidence that this happened.
"Few would argue it's the most dramatic climate change in the last
10,000 years," Tornqvist said in a statement. "We're now able to show the first sea-level record that corresponds
to that event."
Tornqvist and some graduate students found the
evidence along the Gulf of Mexico off the southern U.S. coast.
They
found peat deposits that would have been formed under rising sea levels. Working with researchers in the
Netherlands, they dated the material to 8,200 years ago.
Their
composition suggested they were made when a saltwater marsh was abruptly flooded and turned into a lagoon.
"Climatologists urgently need this type of information to run their
climate models in order to understand the conditions that can produce such an abrupt climate change," Tonrqvist
said.
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