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Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3423707m&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 23, CiteID L23707
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1
Atmospheric Composition And Structure: Cloud/Radiation Interaction, Oceanography: General: Climate And Interannual Variability (1616, 1635, 3305, 3309, 4513), Geographic Location: Arctic Region (0718, 4207)
Scientific paper
The Arctic is among the regions where climate is changing most rapidly today. Climate change is amplified by a variety of positive feedbacks, many of which are linked with changes in water vapor, cloud cover, and other cloud properties. We use a global climate model to examine several of these feedbacks, with a particular emphasis on determining whether there are significant temporal changes in these feedbacks that would make them stronger or weaker during the 21st century. The model results indicate that one of the significant positive feedbacks on Arctic surface air temperature in winter weakens substantially toward the end of the 21st century. The feedback loop begins with a temperature increase that produces increases in water vapor, cloud cover, and cloud optical depth which increase the downward longwave flux by 30 Wm-2 by 2060 which then increases the surface air temperature.
Chen Yonghua
Francis Jennifer A.
Miller James R.
Russell Gary L.
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