Resolving the paradox of the Antarctic sea ice

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ScienceDaily (Aug. 16, 2010) — While Arctic sea ice has person's name diminishing in new decades, the Antarctic sea ice extent has person's name rising slightly. Researchers as of the Georgia Institute of Technology give an clarification for the seeming paradox of rising Antarctic sea ice in a previous climate.

The document appears in the Early Edition of the Proceedings of the National Academy of Science the melody of August 16, 2010.

"We required to appreciate petroleum obvious paradox so so as to we can improved appreciate come again? strength occur to the Antarctic sea ice in the pending century by means of greater supposed before greenhouse warming," supposed Jiping Liu, a investigate scientist in Georgia Tech's School of Earth and Atmospheric Sciences.

Currently, as the atmosphere warms, the hydrological series accelerates and present is additional precipitation in the Southern Ocean surrounding Antarctica. This greater supposed before precipitation, more frequently supposed not in the shape of snow, stabilizes the higher ocean and insulates it as of the ocean warmth below. This insulating result reduces the quantity of melting occurring underneath the sea ice. In addition, snow has a tendency to reflect atmospheric warmth absent as of the sea ice, construct reduces melting as of above.

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However, the climate heavy predict greenhouse gases determination carry on to add to in the 21st century, construct determination consequence in the sea ice melting at a earlier speed as of together on top of and below. Here's how it works. Increased previous of the atmosphere is predictable to warmth the higher ocean, construct determination add to the melting of the sea ice as of below. In addition, greater supposed before previous determination too consequence in a abridged height of snowfall, but additional rain. Because rain doesn't reflect warmth rear the way snow does, petroleum determination enhance the melting of the Antarctic sea ice as of above.

"Our judgment raises a number of interesting possibilities concerning come again? we strength see in the future. We may see, on a occasion level of decades, a button in the Antarctic, anywhere the sea ice extent begins to decrease," supposed Judith A. Curry, get the chair over of the School of Earth and Atmospheric Sciences at Georgia Tech.

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Story Source:

The on top of tale is reprinted (with leader adaptations by ScienceDaily staff) as of resources ,advertising by Georgia Institute of Technology.

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Journal Reference:

1. Jiping Liu and, Judith A. Curry. Accelerated previous of the Southern Ocean and its impacts on the hydrological series and sea ice. PNAS, August 16, 2010 DOI: 10.1073/pnas.1003336107

Note: If no author is given, the basis is cited instead.

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