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Role of land-surface changes in arctic summer warming

Science

By:
, , , , , , , , , , , , , , , , , , , ,
DOI: 10.1126/science.1117368

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Abstract

A major challenge in predicting Earth's future climate state is to understand feedbacks that alter greenhouse-gas forcing. Here we synthesize field data from arctic Alaska, showing that terrestrial changes in summer albedo contribute substantially to recent high-latitude warming trends. Pronounced terrestrial summer warming in arctic Alaska correlates with a lengthening of the snow-free season that has increased atmospheric heating locally by about 3 watts per square meter per decade (similar in magnitude to the regional heating expected over multiple decades from a doubling of atmospheric CO2). The continuation of current trends in shrub and tree expansion could further amplify this atmospheric heating by two to seven times.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Role of land-surface changes in arctic summer warming
Series title:
Science
DOI:
10.1126/science.1117368
Volume
310
Issue:
5748
Year Published:
2005
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
657
Last page:
660
Number of Pages:
4