| DOI: | 10.1175/JCLI-D-15-0147.1
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| Scopus记录号: | 2-s2.0-84957827830
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| 论文题名: | Dark warming |
| 作者: | Burt M.A.; Randall D.A.; Branson M.D.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2016
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| 卷: | 29, 期:2 | | 起始页码: | 705
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| 结束页码: | 719
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| 语种: | 英语
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| Scopus关键词: | Atmospheric temperature
; Atmospheric thermodynamics
; Climate models
; Earth (planet)
; Ice
; Insulation
; Oceanography
; Sea ice
; Sea level
; Wind
; Absorbed solar radiations
; Arctic
; Climate change simulations
; Cloud radiative effects
; Geographic location
; Monsoons
; Surface air temperatures
; Surface evaporation
; Climate change
; air temperature
; climate change
; climatology
; cloud radiative forcing
; global warming
; monsoon
; sea ice
; solar radiation
; Arctic Ocean
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| 英文摘要: | As the Arctic sea ice thins and ultimately disappears in a warming climate, its insulating power decreases. This causes the surface air temperature to approach the temperature of the relatively warm ocean water below the ice. The resulting increases in air temperature, water vapor, and cloudiness lead to an increase in the surface downwelling longwave radiation (DLR), which enables a further thinning of the ice. This positive ice- insulation feedback operates mainly in the autumn and winter. A climate change simulation with the Community Earth System Model shows that, averaged over the year, the increase in ArcticDLRis 3 times stronger than the increase in Arctic absorbed solar radiation at the surface. The warming of the surface air over the Arctic Ocean during fall and winter creates a strong thermal contrast with the colder surrounding continents. Sea level pressure falls over the Arctic Ocean, and the high-latitude circulation reorganizes into a shallow ''winter monsoon.'' The resulting increase in surface wind speed promotes stronger surface evaporation and higher humidity over portions of the Arctic Ocean, thus reinforcing the ice-insulation feedback. © 2016 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/50302
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
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| Recommended Citation: | |
Burt M.A.,Randall D.A.,Branson M.D.. Dark warming[J]. Journal of Climate,2016-01-01,29(2)
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