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Scientific paper
Nov 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3821704c&link_type=abstract
Geophysical Research Letters, Volume 38, Issue 21, CiteID L21704
Other
Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Global Change: Atmosphere (0315, 0325), Global Change: Climate Dynamics (0429, 3309), Global Change: Earth System Modeling (1225, 4316), Global Change: Impacts Of Global Change (1225, 4321)
Scientific paper
There is a debate on whether the snow/ice change feedback or poleward energy transport from lower latitudes generates the observed Arctic warming amplification. There is another possibility that remotely induced warming in the Arctic can be amplified by snow/ice feedbacks. We demonstrate that this mechanism plays an important role in two independent climate models: CAM3 and ECHAM5. We also show with these two models that the June-August temperature structure in the vertical is a good indicator of how much the climate forcing from lower latitudes contributes to Arctic warming. Compared with the June-August 3D temperature trend in ERA Interim reanalysis, the CMIP3 models simulate warming at higher levels, suggesting that the models over-simulate the role of poleward energy transport in Arctic warming. This finding has implications for climate feedback and aerosol forcing.
Chung Chul E.
Räisänen Petri
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