globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-15-0079.1
Scopus记录号: 2-s2.0-84942858739
论文题名:
Seasonal dependence of the effect of arctic greening on tropical precipitation
作者: Kang S.M.; Kim B.-M.; Frierson D.M.W.; Jeong S.-J.; Seo J.; Chae Y.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期:15
起始页码: 6086
结束页码: 6095
语种: 英语
Scopus关键词: Atmospheric movements ; Incident solar radiation ; Solar energy ; Solar radiation ; Vegetation ; Atmospheric circulation ; Energy transport ; Hydrologic cycles ; Northern Hemisphere atmosphere ; Outgoing longwave radiation ; Surface turbulent fluxes ; Tropical precipitation ; Vegetation-atmosphere interactions ; Tropics ; absorption ; atmospheric circulation ; atmospheric transport ; Hadley cell ; hydrological cycle ; longwave radiation ; Northern Hemisphere ; precipitation (climatology) ; seasonal variation ; vegetation cover ; Arctic
英文摘要: This paper examines the seasonal dependence of the effect of Arctic greening on tropical precipitation. In CAM3/CLM3 coupled to a mixed layer ocean, shrub and grasslands poleward of 60°N are replaced with boreal forests. With darker Arctic vegetation, the absorption of solar energy increases, but primarily in boreal spring and summer since little insolation reaches the Arctic in boreal winter. The net energy input into the northern extratropics is partly balanced by southward atmospheric energy transport across the equator by an anomalous Hadley circulation, resulting in a northward shift of the tropical precipitation. In contrast, in boreal fall, the slight increase in insolation over the Arctic is more than offset by increased outgoing longwave radiation and reduced surface turbulent fluxes in midlatitudes, from the warmer atmosphere. As a result, the Northern Hemisphere atmosphere loses energy, which is compensated by a northward cross-equatorial atmospheric energy transport, leading to a southward shift of the tropical precipitation in boreal fall. Thus, although Arctic vegetation is changed throughout the year, its effect on tropical precipitation exhibits substantial seasonal variations. © 2015 American Meteorological Society.
资助项目: MSIP, Ministry of Science, ICT and Future Planning ; NSF, Ministry of Science, ICT and Future Planning ; NSF, Ministry of Science, ICT and Future Planning ; NSF, Ministry of Science, ICT and Future Planning ; NRF, Ministry of Science, ICT and Future Planning ; NRF, Ministry of Science, ICT and Future Planning
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50772
Appears in Collections:气候变化事实与影响

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作者单位: School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea; Division of Polar Climate Change Research, Korea Polar Research Institute, Incheon, South Korea; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States

Recommended Citation:
Kang S.M.,Kim B.-M.,Frierson D.M.W.,et al. Seasonal dependence of the effect of arctic greening on tropical precipitation[J]. Journal of Climate,2015-01-01,28(15)
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