Posted on 06/30/2005 12:54:15 PM PDT by satchmodog9
Extra precipitation expected as a result of global warming could create a lopsided world in which sea ice increases around the South Pole while the far north melts away.
ADVERTISEMENT
A new study illustrates the difficulty in predicting how the planet might react to overall warming, which most but not all scientists believe is underway, in part due to greenhouse gas emissions by industry and autos.
"Most people have heard of climate change and how rising air temperatures are melting glaciers and sea ice in the Arctic," said Dylan Powell of the University of Maryland Baltimore County. "However, findings from our simulations suggest a counterintuitive phenomenon. Some of the melt in the Arctic may be balanced by increases in sea ice volume in the Antarctic."
Powell, a doctoral student, is lead author of a paper describing the results in this month's Journal of Geophysical Research (Oceans).
Powell and his colleagues used satellite data from NASA's Special Sensor Microwave/Imager to study snow depth on sea ice. The data allowed "more stable and realistic precipitation data" to be fed into computer models that project changes around the globe.
"On any given day, sea ice cover in the oceans of the polar regions is about the size of the United States," said Thorsten Markus, a co-author of the paper and a research scientist at NASA's Goddard Space Flight Center. "Far-flung locations like the Arctic and Antarctic actually impact our temperature and climate where we live."
Polar sea ice formation and climate patterns drive large ocean circulation currents, which in turn affect local climates at moderate latitudes where most people live. A warmer world should fuel more precipitation, most experts agree.
For Antarctica, the new study concludes, the extra precipitation will mean deeper snow, which will suppress sea ice below, making it thicker over time.
The idea rusn counter to a study earlier this year that found glaciers in part of Antarctica are melting rapidly.
"We used computer-generated simulations to get this research result," Powell cautioned. "I hope that in the future we'll be able to verify this result with real data through a long-term ice thickness measurement campaign."
at what point do these guys begin to lose all credibility with the general public???
Just ignore them. Scientist are no more credible than the guy downtown, standing on the corner with the big sign that says, "THE END IS NEAR". Come to think of it. The guy on the corner probably has a higher probability of being correct.
The guy on the corner was a scientist until he fried his brain on acid and his medical marijuana.
This "scientist" is a complete and utter dickhead !
I hear the crap liberals have been shoveling over at Moveon.org has gotten so thick it may throw off the Earth's rotational Axis and send us hurling into the Sun, oh and cause Global Warming yada yada..which to them would still be more important.
It has already created a lopsided planet-the hordes of beguiled believers vs we who recomnize bull sh*t, regardless of the credentils of the bull sh*tters.
"recognize"
there was an anorexic girl in my spanish class that always said nothing.
then one day she blurted out:
"and you can't take even ONE fish from the ocean without damaging the earth!"
some people take this stuff series.
Woman, children and minorities to suffer the most!
Maybe the lack of food fried her brain.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.