Judith Curry : Science Star

Despite her claims that she thinks there’s too much uncertainty in the Earth’s Climate system to be able to project significant Climate Change with confidence, Dr Judith Curry is still able to do Science, as I first read in Wired :-

http://www.wired.com/wiredscience/2010/08/antarctic-ice-future/

http://www.pnas.org/content/early/2010/08/09/1003336107.abstract

“Accelerated warming of the Southern Ocean and its impacts on the hydrological cycle and sea ice : Jiping Liu and Judith A. Curry : School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332 : Edited by Mark H. Thiemens, University of California at San Diego, La Jolla, CA, and approved July 13, 2010 (received for review March 15, 2010) : Abstract : The observed sea surface temperature in the Southern Ocean shows a substantial warming trend for the second half of the 20th century. Associated with the warming, there has been an enhanced atmospheric hydrological cycle in the Southern Ocean that results in an increase of the Antarctic sea ice for the past three decades through the reduced upward ocean heat transport and increased snowfall. The simulated sea surface temperature variability from two global coupled climate models for the second half of the 20th century is dominated by natural internal variability associated with the Antarctic Oscillation, suggesting that the models’ internal variability is too strong, leading to a response to anthropogenic forcing that is too weak. With increased loading of greenhouse gases in the atmosphere through the 21st century, the models show an accelerated warming in the Southern Ocean, and indicate that anthropogenic forcing exceeds natural internal variability. The increased heating from below (ocean) and above (atmosphere) and increased liquid precipitation associated with the enhanced hydrological cycle results in a projected decline of the Antarctic sea ice.”

http://www.pnas.org/content/suppl/2010/08/12/1003336107.DCSupplemental/pnas.1003336107_SI.pdf

http://news.discovery.com/earth/antarctic-sea-ice-growth.html

This leads to a rather deep question : we know the Arctic sea ice is probably doomed, and that Greenland’s ice cap is melting, so the whole Northern Pole could be relatively ice free within decades. And then the Antarctic will most likely degrade as the added snowfall caused by Global Warming turns to rain. Does Judith Curry know how unstable the Earth’s Climate was when last the Earth didn’t have either Arctic or Antarctic ice caps ?

Of course she does…

http://www.nature.com/nature/journal/v461/n7267/full/nature08447.html

Judith Curry is probably also highly aware that melting both the Arctic and Antarctic ice caps away rolls back at least 3 million years of stabilisation at lower relative temperatures, in less than 400 years of Anthropogenic Global Warming !


Leave a Reply

Your email address will not be published. Required fields are marked *