DOI: 10.1002/2015GL063220
论文题名: Estimating the Atlantic overturning at 26°N using satellite altimetry and cable measurements
作者: Frajka-Williams E.
刊名: Geophysical Research Letters
ISSN: 0094-9589
EISSN: 1944-9320
出版年: 2015
卷: 42, 期: 9 起始页码: 3458
结束页码: 3464
语种: 英语
英文关键词: interannual variability
; meridional overturning circulation
; ocean climate
; ocean transports
; satellite oceanography
Scopus关键词: Cables
; Oceanography
; Surface waters
; Interannual variability
; Meridional overturning circulations
; Ocean climate
; Ocean transports
; Satellite oceanography
; Satellites
; estimation method
; meridional circulation
; overturn
; satellite altimetry
; sea level
; simulation
; Atlantic Ocean
英文摘要: Climate simulations predict a slowing of the Atlantic meridional overturning circulation (MOC), a key oceanic component of the climate system, while continuous observations of the MOC from boundary arrays demonstrate substantial variability on weekly to interannual time scales. These arrays are necessarily limited to individual latitudes. A potential proxy for the MOC covering longer time scales and larger spatial scales is desirable. Here we use sea surface height data from satellites to estimate the interannual variability of transbasin ocean transports at 26°N. Combining this estimate with surface Ekman transport and cable measurements of the Florida Current, we construct a time series of the MOC from 1993 to 2014. This satellite-based estimate recovers over 90% of the interannual variability of the MOC measured by the RAPID 26°N array. This analysis complements in situ observational efforts to measure the MOC at multiple latitudes and opens the door to a broader spatial understanding of the Atlantic circulation variability. Key Points Western boundary dynamic height governs interannual variability of transports Sea level anomalies in the west anticorrelate transbasin transports at 26°N The MOC 1993-2014 weakened (∼1Sv) due to a weakening of the Florida Current ©2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930474254&doi=10.1002%2f2015GL063220&partnerID=40&md5=819bf6d851b830c0734722b25f3d28be
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9204
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: Ocean and Earth Sciences, University of Southampton, Southampton, United Kingdom
Recommended Citation:
Frajka-Williams E.. Estimating the Atlantic overturning at 26°N using satellite altimetry and cable measurements[J]. Geophysical Research Letters,2015-01-01,42(9).