DOI: 10.1002/grl.50289
论文题名: Shutdown and recovery of the AMOC in a coupled global climate model: The role of the advective feedback
作者: Jackson L.C.
刊名: Geophysical Research Letters
ISSN: 0094-9213
EISSN: 1944-8944
出版年: 2013
卷: 40, 期: 6 起始页码: 1182
结束页码: 1188
语种: 英语
英文关键词: flux adjustments
; freshwater transport
; GCM
; overturning circulation
; stability
Scopus关键词: Atlantic meridional overturning circulations
; Coupled global climate model
; Flux adjustments
; Freshwater transports
; GCM
; Global climate model
; Overturning circulation
; Transient simulation
; Climate models
; Convergence of numerical methods
; Salinity measurement
; Water
; Oceanography
; air-sea interaction
; climate modeling
; flux measurement
; global climate
; meridional circulation
; numerical model
; oceanic circulation
; salinity
; Atlantic Ocean
英文摘要: The fresh water advection into the Atlantic ocean by the overturning circulation (Fov) has been suggested as an indicator of the stability of the Atlantic Meridional Overturning Circulation (AMOC) through an advective feedback. This feedback is explored in transient simulations with a global climate model with and without flux adjustments. Flux adjustments are shown to alter the model near surface salinity, changing Fov from a net importer, to a net exporter of fresh water, mainly through correcting an Atlantic saline bias. The AMOC recovers in strength from a collapsed state, however, that in the experiment with flux adjustments recovers much later and more slowly than that without flux adjustments. This difference is traced back to the sign of Fov, confirming the indicator's importance for the AMOC and suggesting that model biases affecting Fov need to be addressed in order to assess the likelihood of irreversible changes in the AMOC. Key Points A theoretical indicator of AMOC stability (Fov) is examined in a coupled GCM The sign of Fov has a large impact on AMOC recovery time from an Salinity biases can affect Fov and cause the AMOC to be too stable. ©2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876904709&doi=10.1002%2fgrl.50289&partnerID=40&md5=40c8a737587ade6a59364ef05093dd02
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6477
Appears in Collections: 气候减缓与适应
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作者单位: Met Office Hadley Centre, Fitzroy Road, Exeter, EX1 3PB, United Kingdom
Recommended Citation:
Jackson L.C.. Shutdown and recovery of the AMOC in a coupled global climate model: The role of the advective feedback[J]. Geophysical Research Letters,2013-01-01,40(6).