DOI: 10.1002/2016GL070058
论文题名: The influence of Southern Ocean surface buoyancy forcing on glacial-interglacial changes in the global deep ocean stratification
作者: Sun S. ; Eisenman I. ; Stewart A.L.
刊名: Geophysical Research Letters
ISSN: 0094-8831
EISSN: 1944-8562
出版年: 2016
卷: 43, 期: 15 起始页码: 8124
结束页码: 8132
语种: 英语
英文关键词: comprehensive climate model
; deep ocean stratification
; Last Glacial Maximum
; Southern Ocean
; surface buoyancy forcing
Scopus关键词: Buoyancy
; Climate models
; Glacial geology
; Water
; Buoyancy forcing
; Conceptual model
; Deep ocean
; Density stratification
; Freshwater fluxes
; Intermediate depths
; Last Glacial Maximum
; Southern ocean
; Oceanography
; buoyancy forcing
; climate modeling
; deep water
; glacial-interglacial cycle
; Last Glacial Maximum
; sea surface
; stratification
; Atlantic Ocean
; Atlantic Ocean (North)
; Southern Ocean
英文摘要: Previous studies have suggested that the global ocean density stratification below ∼3000 m is approximately set by its direct connection to the Southern Ocean surface density, which in turn is constrained by the atmosphere. Here the role of Southern Ocean surface forcing in glacial-interglacial stratification changes is investigated using a comprehensive climate model and an idealized conceptual model. Southern Ocean surface forcing is found to control the global deep ocean stratification up to ∼2000 m, which is much shallower than previously thought and contrary to the expectation that the North Atlantic surface forcing should strongly influence the ocean at intermediate depths. We show that this is due to the approximately fixed surface freshwater fluxes, rather than a fixed surface density distribution in the Southern Ocean as was previously assumed. These results suggest that Southern Ocean surface freshwater forcing controls glacial-interglacial stratification changes in much of the deep ocean. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84982958034&doi=10.1002%2f2016GL070058&partnerID=40&md5=0ec540ad9a8ccb2a4fbc760520c1b661
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9794
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Scripps Institution of Oceanography, University of California, San Diego, La Jolla, United States
Recommended Citation:
Sun S.,Eisenman I.,Stewart A.L.. The influence of Southern Ocean surface buoyancy forcing on glacial-interglacial changes in the global deep ocean stratification[J]. Geophysical Research Letters,2016-01-01,43(15).