DOI: 10.1002/2015GL066262
论文题名: Impact of the Atlantic meridional overturning circulation on the decadal variability of the Gulf Stream path and regional chlorophyll and nutrient concentrations
作者: Sanchez-Franks A. ; Zhang R.
刊名: Geophysical Research Letters
ISSN: 0094-8382
EISSN: 1944-8113
出版年: 2015
卷: 42, 期: 22 起始页码: 9889
结束页码: 9897
语种: 英语
英文关键词: AMOC
; biogeochemical cycle
; Gulf Stream
Scopus关键词: Biogeochemistry
; Chlorophyll
; Nutrients
; Ocean currents
; AMOC
; Atlantic meridional overturning circulations
; Biogeochemical cycle
; Biogeochemical cycling
; Gulf Stream
; Large-scale ocean circulations
; Low frequency variability
; Nutrient concentrations
; Oceanography
; biogeochemical cycle
; chlorophyll
; concentration (composition)
; decadal variation
; isopycnal layer
; meridional circulation
; nutrient
; overturn
; teleconnection
; Atlantic Ocean
; Gulf Stream
; North America
英文摘要: In this study, we show that the underlying physical driver for the decadal variability in the Gulf Stream (GS) path and the regional biogeochemical cycling is linked to the low frequency variability in the Atlantic meridional overturning circulation (AMOC). There is a significant anticorrelation between AMOC variations and the meridional shifts of the GS path at decadal time scale in both observations and two Earth system models (ESMs). The chlorophyll and nutrient concentrations in the GS region are found significantly correlated with the AMOC fingerprint and anticorrelated with the GS path at decadal time scale through coherent isopycnal changes in the GS front in the ESMs. Our results illustrate how changes in the large-scale ocean circulation, such as AMOC, are teleconnected with regional decadal physical and biogeochemical variations near the North American east coast. Such linkages are useful for predicting future physical and biogeochemical variations in this region. Key Points An enhanced AMOC leads to a southward shift and steepened isopycnals in the GS Nutrient reservoirs in the GS region move along with the steepened isopycnals Biogeochemical variability in the GS region is linked to the GS path and AMOC. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84956958293&doi=10.1002%2f2015GL066262&partnerID=40&md5=d4172c8da5eb826ee07abd68a1eb5b1f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7998
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: National Oceanography Centre, Southampton, United Kingdom
Recommended Citation:
Sanchez-Franks A.,Zhang R.. Impact of the Atlantic meridional overturning circulation on the decadal variability of the Gulf Stream path and regional chlorophyll and nutrient concentrations[J]. Geophysical Research Letters,2015-01-01,42(22).