DOI: 10.1175/JCLI-D-17-0629.1
Scopus记录号: 2-s2.0-85048516296
论文题名: The effect of Arctic freshwater pathways on North Atlantic convection and the Atlantic meridional overturning circulation
作者: Wang H. ; Legg S. ; Hallberg R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 13 起始页码: 5165
结束页码: 5188
语种: 英语
英文关键词: Atmosphere-ocean interaction
; Channel flows
; Climate models
; Deep convection
; Freshwater
; Ocean circulation
Scopus关键词: Atmospheric thermodynamics
; Channel flow
; Climate models
; Natural convection
; Water
; Atlantic meridional overturning circulations
; Atmosphere-ocean interactions
; Control simulation
; Coupled climate model
; Deep convection
; Freshwater
; Numerical experiments
; Ocean circulation
; Oceanography
; atmospheric convection
; channel flow
; climate modeling
; freshwater input
; meridional circulation
; overturn
; Arctic
; Arctic Ocean
; Atlantic Ocean
; Greenland
; Irminger Sea
; Labrador Sea
; Norwegian Sea
英文摘要: This study examines the relative roles of the Arctic freshwater exported via different pathways on deep convection in the North Atlantic and the Atlantic meridional overturning circulation (AMOC). Deep water feeding the lower branch of the AMOC is formed in several North Atlantic marginal seas, including the Labrador Sea, Irminger Sea, and the Nordic seas, where deep convection can potentially be inhibited by surface freshwater exported from the Arctic. The sensitivity of the AMOC and North Atlantic to two major freshwater pathways on either side of Greenland is studied using numerical experiments. Freshwater export is rerouted in global coupled climate models by blocking and expanding the channels along the two routes. The sensitivity experiments are performed in two sets of models (CM2G and CM2M) with different control simulation climatology for comparison. Freshwater via the route east of Greenland is found to have a larger direct impact on Labrador Sea convection. In response to the changes of freshwater route, North Atlantic convection outside of the Labrador Sea changes in the opposite sense to the Labrador Sea. The response of the AMOC is found to be sensitive to both the model formulation and mean-state climate. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111476
Appears in Collections: 气候减缓与适应
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作者单位: Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States; Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States; NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
Recommended Citation:
Wang H.,Legg S.,Hallberg R.. The effect of Arctic freshwater pathways on North Atlantic convection and the Atlantic meridional overturning circulation[J]. Journal of Climate,2018-01-01,31(13)