DOI: 10.1002/2016GL070906
论文题名: The impact of Labrador Sea temperature and salinity variability on density and the subpolar AMOC in a decadal prediction system
作者: Menary M.B. ; Hermanson L. ; Dunstone N.J.
刊名: Geophysical Research Letters
ISSN: 0094-8340
EISSN: 1944-8071
出版年: 2016
卷: 43, 期: 23 起始页码: 12217
结束页码: 12227
语种: 英语
英文关键词: AMOC
; Atlantic Meridional Overturning Circulation
; decadal prediction
; Labrador Sea
; North Atlantic
; subpolar gyre
Scopus关键词: Climate models
; Forecasting
; Sea level
; AMOC
; Atlantic meridional overturning circulations
; Decadal predictions
; Labrador Sea
; North Atlantic
; Subpolar gyres
; Oceanography
英文摘要: Labrador Sea density variability is important for Atlantic Meridional Overturning Circulation (AMOC) dynamics and hence decadal variability in the Atlantic. We investigate whether temperature or salinity dominate top 500 m interannual Labrador Sea density variability in gridded observations, an assimilation of the observations, and a set of multiannual hindcasts. We find that salinity dominates in the observations and assimilation. In the hindcasts salinity remains dominant for the first year but from year three these revert to the same temperature dominance seen in the underlying climate model. This is due to damping of the interannual salinity variability, possibly caused by unrealistically large convection that develops. Crucially, the hindcasts have high correlation skill in temperature/salinity throughout, but no skill in density, dynamic sea level, or the subpolar AMOC due to the incorrect drivers. This highlights the importance of correctly simulating both the sign and magnitude of temperature/salinity variability in a prediction system. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007311227&doi=10.1002%2f2016GL070906&partnerID=40&md5=ce198dccdbe531acde2578e613de383e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9303
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: Met Office Hadley Centre, Met Office, Exeter, United Kingdom
Recommended Citation:
Menary M.B.,Hermanson L.,Dunstone N.J.. The impact of Labrador Sea temperature and salinity variability on density and the subpolar AMOC in a decadal prediction system[J]. Geophysical Research Letters,2016-01-01,43(23).