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Rapid temperature increases above the Antarctic
March 31, 200630 year weather balloon record
A new analysis of weather balloon observations from the last 30 years reveals that the Antarctic has the same 'global warming' signature as that seen across the whole Earth, but is three times larger than that observed globally. The results by scientists from British Antarctic Survey are reported this week in Science.
Although the rapid surface warming in the Antarctic Peninsula region has been known for some time, this study has produced the first indications of broad-scale climate change across the whole Antarctic continent.
Lead author Dr John Turner of the British Antarctic Survey says,
"The rapid surface warming of the Antarctic Peninsula and the enhanced global warming signal over the whole continent shows the complexity of climate change. Greenhouses gases could be having a bigger impact in Antarctica than across the rest of the world and we don't understand why. So far we haven't been able to determine the mechanisms behind the warming.
"The warming above the Antarctic could have implications for snowfall across the Antarctic and sea level rise. Current climate model simulations don't reproduce the observed warming, pointing to weaknesses in their ability to represent the Antarctic climate system. Our next step is to try to improve the models. \\\
British Antarctic Survey
Lead author Dr John Turner of the British Antarctic Survey says,
"The rapid surface warming of the Antarctic Peninsula and the enhanced global warming signal over the whole continent shows the complexity of climate change. Greenhouses gases could be having a bigger impact in Antarctica than across the rest of the world and we don't understand why. So far we haven't been able to determine the mechanisms behind the warming.
"The warming above the Antarctic could have implications for snowfall across the Antarctic and sea level rise. Current climate model simulations don't reproduce the observed warming, pointing to weaknesses in their ability to represent the Antarctic climate system. Our next step is to try to improve the models. \\\
British Antarctic Survey
Antarctic Climate Current Events and Antarctic Climate News RSSEmperor Penguins March toward Extinction?
Popularized by the 2005 movie "March of the Penguins," emperor penguins could be headed toward extinction in at least part of their range before the end of the century, according to a paper by Woods Hole Oceanographic Institution (WHOI) researchers published January 26, 2009, in Proceedings of the National Academy of Sciences of the United States of America.
Satellites confirm half-century of West Antarctic warming
The Antarctic Peninsula juts into the Southern Ocean, reaching farther north than any other part of the continent. The southernmost reach of global warming was believed to be limited to this narrow strip of land, while the rest of the continent was presumed to be cooling or stable.
My, what big teeth you had! Extinct species had large teeth on roof of mouth
When the world's land was congealed in one supercontinent 240 million years ago, Antarctica wasn't the forbiddingly icy place it is now. But paleontologists have found a previously unknown amphibious predator species that probably still made it less than hospitable.
Antarctic Fossils Paint a Picture of a Much Warmer Continent
National Science Foundation-funded scientists working in an ice-free region of Antarctica have discovered the last traces of tundra--in the form of fossilized plants and insects--on the interior of the southernmost continent before temperatures began a relentless drop millions of years ago.
Unique fossil discovery shows Antarctic was once much warmer
A new fossil discovery- the first of its kind from the whole of the Antarctic continent- provides scientists with new evidence to support the theory that the polar region was once much warmer.
Ocean satellite launch critical to Australian science
A new earth observing satellite being launched in California today will help guide future Australian ocean and climate science.
Ocean warming on the rise
Increased scientific confidence that ocean observations are accurately reflecting rising global temperatures is central to new Australian research published today in the journal, Nature.
Ocean temperatures and sea level increases 50 percent higher than previously estimated
New research suggests that ocean temperature and associated sea level increases between 1961 and 2003 were 50 percent larger than estimated in the 2007 Intergovernmental Panel on Climate Change report.
Climate Models Overheat Antarctica, New Study Finds
Computer analyses of global climate have consistently overstated warming in Antarctica, concludes new research by scientists at the National Center for Atmospheric Research (NCAR) and Ohio State University.
Climate change and life in the Southern Ocean
A ten-week expedition to the Lazarev Sea and the eastern part of the Weddell Sea opens this year's Antarctic research season of the German research vessel Polarstern.
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