Melting Arctic ice favored by the South East Asian pollution

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Part of the fine particulate matter produced by human activity, particularly in Southeast Asia, would contribute to the melting of Arctic ice. Dorothy Koch of Columbia University, and James Hansen of the Goddard Institute for Space Studies (GISS), have collected and tried atellitaire imaging data through the model
global atmospheric circulation developed by GISS (the General Circulation Model), to determine the origin of the carbon particles above the North Pole.

Their work, published in the Journal of Geophysical Research, show a correlation between melting, in time and space, Arctic glaciers and the quantities of "soot" produced by humans during 20ème century . Indeed, the soot particles, when deposited on ice, promote the absorption of light, accelerating the thawing and their presence in the northern sky alters weather by heating the air. The phenomenon is not only a consequence of global warming.

Regarding the origin of pollution in the Arctic, one third from carbon emissions in Southeast Asia, one third of forest fires and other combustions in nature and the rest of the industrial smoke and Western automobile pollution. And while pollution from industrialized countries flows in relatively low atmospheric currents, one from Asia borrows higher ascending pathways, to the troposphere.

LAT 24 / 03 / 05 (Airborne soot adds to melting artic, study finds)


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