Their work showed that not only was the Antarctic Peninsula warming, but the interior of West Antarctica — the ice sheet most susceptible to potential future collapse — was as well. And not only that, but that "the continent on the whole is warming," Mann said. "This is the first study to demonstrate that."
The study, funded by the National Science Foundation, found that warming in West Antarctica exceeded about 0.18 degree Fahrenheit (0.1 degree Celsius) per decade for the last 50 years — more than enough to offset the cooling in East Antarctica.
And with ozone depletion having leveled off, that cooling is unlikely to continue in the future.
"Efforts to repair the ozone layer eventually will begin taking effect and the hole could be eliminated by the middle of this century. If that happens, all of Antarctica
could begin warming on a par with the rest of the world," Steig said.
"The greenhouse signal is now out-competing the ozone depletion signal," Mann said.
The study is "good work," said Kevin Trenberth of the National Center for Atmospheric Research (NCAR) in Boulder, Colo., but he says there are unique aspects of Antarctica's climate that haven't been taken into account. Trenbeok, follow me because this is why I so distrust the global warming crowd...I have asked several times what the proof is for claiming this and all I have gotten is "this and/or that is rising in temperature"..."this and/or that scientist said"...."this and/or that study" and not one standard unit of proof...if you would like to see how frustrating listening to something where proof is not the focal point, try adding proof to each and every claim that you are going to try and make from here on out...none exists because everything that is happening to the earth right now is natural and has happened between 17 and 19 times before.