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DOI10.1175/JCLI-D-17-0889.1
Structure and Forcing of Observed Exchanges across the Greenland-Scotland Ridge
Bringedal, Carina1,2,6; Eldevik, Tor1,2; Skagseth, Oystein2,3; Spall, Michael A.4; Osterhus, Svein2,5
2018-12-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
EISSN1520-0442
出版年2018
卷号31期号:24页码:9881-9901
文章类型Article
语种英语
国家Norway; USA; Belgium
英文摘要

The Atlantic meridional overturning circulation and associated poleward heat transport are balanced by northern heat loss to the atmosphere and corresponding water-mass transformation. The circulation of northward-flowing Atlantic Water at the surface and returning overflow water at depth is particularly manifestedand observedat the Greenland-Scotland Ridge where the water masses are guided through narrow straits. There is, however, a rich variability in the exchange of water masses across the ridge on all time scales. Focusing on seasonal and interannual time scales, and particularly the gateways of the Denmark Strait and between the Faroe Islands and Shetland, we specifically assess to what extent the exchanges of water masses across the Greenland-Scotland Ridge relate to wind forcing. On seasonal time scales, the variance explained of the observed exchanges can largely be related to large-scale wind patterns, and a conceptual model shows how this wind forcing can manifest via a barotropic, cyclonic circulation. On interannual time scales, the wind stress impact is less direct as baroclinic mechanisms gain importance and observations indicate a shift in the overflows from being more barotropically to more baroclinically forced during the observation period. Overall, the observed Greenland-Scotland Ridge exchanges reflect a horizontal (cyclonic) circulation on seasonal time scales, while the interannual variability more represents an overturning circulation.


英文关键词Ocean circulation Thermocline circulation Atmosphere-ocean interaction North Atlantic Oscillation Statistical techniques Time series
领域气候变化
收录类别SCI-E
WOS记录号WOS:000450407600006
WOS关键词DENMARK STRAIT OVERFLOW ; FAROE-BANK CHANNEL ; DENSE WATER FORMATION ; NORTH-ATLANTIC OCEAN ; SEA-SURFACE HEIGHT ; NORDIC SEAS ; THERMOHALINE CIRCULATION ; OVERTURNING CIRCULATION ; CONVECTIVE BASIN ; SHETLAND CHANNEL
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/20028
专题气候变化
作者单位1.Univ Bergen, Inst Geophys, Bergen, Norway;
2.Univ Bergen, Bjerknes Ctr Climate Res, Bergen, Norway;
3.Univ Bergen, Inst Marine Res, Bergen, Norway;
4.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA;
5.Univ Bergen, Uni Res Climate, Bergen, Norway;
6.Hasselt Univ, Fac Sci, Diepenbeek, Belgium
推荐引用方式
GB/T 7714
Bringedal, Carina,Eldevik, Tor,Skagseth, Oystein,et al. Structure and Forcing of Observed Exchanges across the Greenland-Scotland Ridge[J]. JOURNAL OF CLIMATE,2018,31(24):9881-9901.
APA Bringedal, Carina,Eldevik, Tor,Skagseth, Oystein,Spall, Michael A.,&Osterhus, Svein.(2018).Structure and Forcing of Observed Exchanges across the Greenland-Scotland Ridge.JOURNAL OF CLIMATE,31(24),9881-9901.
MLA Bringedal, Carina,et al."Structure and Forcing of Observed Exchanges across the Greenland-Scotland Ridge".JOURNAL OF CLIMATE 31.24(2018):9881-9901.
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