DOI: 10.1002/2018JC013774
Scopus记录号: 2-s2.0-85045700248
论文题名: Local and Remote Influences on the Heat Content of the Labrador Sea: An Adjoint Sensitivity Study
作者: Jones D.C. ; Forget G. ; Sinha B. ; Josey S.A. ; Boland E.J.D. ; Meijers A.J.S. ; Shuckburgh E.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 4 起始页码: 2646
结束页码: 2667
语种: 英语
英文关键词: adjoint modeling
; adjoint sensitivity
; heat content
; heat flux
; Labrador Sea
; teleconnection
Scopus关键词: anomaly
; heat budget
; heat flux
; modeling
; pressure gradient
; sensitivity analysis
; shelf dynamics
; teleconnection
; warming
; wind stress
; Arctic
; Atlantic Ocean
; Atlantic Ocean (North)
; Greenland
; Gulf Stream
; Iceland
; Irminger Sea
; Labrador Sea
; North Atlantic Current
; West Africa
英文摘要: The Labrador Sea is one of the few regions on the planet where the interior ocean can exchange heat directly with the atmosphere via strong, localized, wintertime convection, with possible implications for the state of North Atlantic climate and global surface warming. Using an observationally constrained ocean adjoint model, we find that annual-mean Labrador Sea heat content is sensitive to temperature/salinity changes (1) along potential source water pathways (e.g., the subpolar gyre, the North Atlantic Current, the Gulf Stream) and (2) along the West African and European shelves, which are not significant source water regions for the Labrador Sea. The West African coastal/shelf adjustment mechanism, which may be excited by changes in along-shelf wind stress, involves pressure anomalies that propagate along a coastal waveguide toward Greenland, changing the across-shelf pressure gradient in the North Atlantic and altering heat convergence in the Labrador Sea. We also find that nonlocal (in space and time) heat fluxes (e.g., in the Irminger Sea, the seas south of Iceland) can have a strong impact on Labrador Sea heat content. Understanding and predicting the state of the Labrador Sea and its potential impacts on North Atlantic climate and global surface warming will require monitoring of oceanic and atmospheric properties at remote sites in the Irminger Sea, the subpolar gyre, and along the West African and European shelf/coast system, among others. © 2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114228
Appears in Collections: 气候减缓与适应
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作者单位: British Antarctic Survey, Natural Environment Research Council, Cambridge, United Kingdom; Massachusetts Institute of Technology, Cambridge, MA, United States; National Oceanography Centre, Southampton, United Kingdom
Recommended Citation:
Jones D.C.,Forget G.,Sinha B.,et al. Local and Remote Influences on the Heat Content of the Labrador Sea: An Adjoint Sensitivity Study[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(4)