globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-015-2819-3
Scopus记录号: 2-s2.0-84940869489
论文题名:
Extreme air–sea interaction over the North Atlantic subpolar gyre during the winter of 2013–2014 and its sub-surface legacy
作者: Grist J.P.; Josey S.A.; Jacobs Z.L.; Marsh R.; Sinha B.; Van Sebille E.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 46, 期:2017-11-12
起始页码: 4027
结束页码: 4045
语种: 英语
英文关键词: Air–sea fluxes ; North Atlantic Ocean ; Ocean heat content ; Subpolar Mode Water ; Winter 2013–2014
英文摘要: Exceptionally low North American temperatures and record-breaking precipitation over the British Isles during winter 2013–2014 were interconnected by anomalous ocean evaporation over the North Atlantic subpolar gyre region (SPG). This evaporation (or oceanic latent heat release) was accompanied by strong sensible heat loss to the atmosphere. The enhanced heat loss over the SPG was caused by a combination of surface westerly winds from the North American continent and northerly winds from the Nordic Seas region that were colder, drier and stronger than normal. A distinctive feature of the air–sea exchange was that the enhanced heat loss spanned the entire width of the SPG, with evaporation anomalies intensifying in the east while sensible heat flux anomalies were slightly stronger upstream in the west. The immediate impact of the strong air–sea fluxes on the ocean–atmosphere system included a reduction in ocean heat content of the SPG and a shift in basin-scale pathways of ocean heat and atmospheric freshwater transport. Atmospheric reanalysis data and the EN4 ocean data set indicate that a longer-term legacy of the winter has been the enhanced formation of a particularly dense mode of Subpolar Mode Water (SPMW)—one of the precursors of North Atlantic Deep Water and thus an important component of the Atlantic Meridional Overturning Circulation. Using particle trajectory analysis, the likely dispersal of newly-formed SPMW is evaluated, providing evidence for the re-emergence of anomalously cold SPMW in early winter 2014/2015. © 2015, Springer-Verlag Berlin Heidelberg.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53698
Appears in Collections:过去全球变化的重建

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作者单位: National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton, United Kingdom; Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Waterfront Campus, European Way, Southampton, United Kingdom; Climate Change Research Centre and ARC Centre of Excellence for Climate System Science, University of New South Wales, Sydney, NSW, Australia; Grantham Institute and Department of Physics, Imperial College London, London, United Kingdom

Recommended Citation:
Grist J.P.,Josey S.A.,Jacobs Z.L.,et al. Extreme air–sea interaction over the North Atlantic subpolar gyre during the winter of 2013–2014 and its sub-surface legacy[J]. Climate Dynamics,2016-01-01,46(2017-11-12)
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