DOI: 10.1002/grl.50912
论文题名: Large-scale circulation associated with moisture intrusions into the Arctic during winter
作者: Woods C. ; Caballero R. ; Svensson G.
刊名: Geophysical Research Letters
ISSN: 0094-8573
EISSN: 1944-8304
出版年: 2013
卷: 40, 期: 17 起始页码: 4717
结束页码: 4721
语种: 英语
英文关键词: Arctic
; circulation
; intrusions
; moisture
; temperature
; transport
Scopus关键词: Arctic
; Interannual variability
; intrusions
; Large-scale circulation
; Large-scale circulation patterns
; Potential temperature
; Surface energy budget
; transport
; Boiler circulation
; Sea level
; Storms
; Temperature
; Moisture
; circulation
; energy budget
; longwave radiation
; moisture
; potential temperature
; potential vorticity
; sea level pressure
; surface energy
; water vapor
; winter
; Arctic Ocean
; Atlantic Ocean
; Atlantic Ocean (North)
; Barents Sea
; Labrador Sea
; Pacific Ocean
英文摘要: We examine the poleward transport of water vapor across 70°N during boreal winter in the ERA-Interim reanalysis product, focusing on intense moisture intrusion events. We analyze the large-scale circulation patterns associated with these intrusions and the impacts they have at the surface. A total of 298 events are identified between 1990 and 2010, an average of 14 per season, accounting for 28% of the total poleward transport of moisture across 70°N. They are concentrated over the main ocean basins at that latitude in the Labrador Sea, North Atlantic, Barents/Kara Sea, and Pacific. Composites of sea level pressure and potential temperature on the 2 potential vorticity unit surface during intrusions show a large-scale blocking pattern to the east of each basin, deflecting midlatitude cyclones and their associated moisture poleward. The interannual variability of intrusions is strongly correlated with variability in winter-mean surface downward longwave radiation and skin temperature averaged over the Arctic. Key Points Intense moisture intrusion events into the Arctic are analyzed during winter Intrusions occur during large-scale blocking events in the main ocean basins Intrusions have a significant impact on the surface energy budget of the Arctic ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883664757&doi=10.1002%2fgrl.50912&partnerID=40&md5=8447e85108b104da39f4ce34242912f4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5837
Appears in Collections: 气候减缓与适应
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作者单位: Department of Meteorology, Bolin Centre for Climate Research, Stockholm University, Svante Arrhenius väg 16C, 106 91 Stockholm, Sweden
Recommended Citation:
Woods C.,Caballero R.,Svensson G.. Large-scale circulation associated with moisture intrusions into the Arctic during winter[J]. Geophysical Research Letters,2013-01-01,40(17).