DOI: 10.1175/JCLI-D-13-00330.1
Scopus记录号: 2-s2.0-84901842497
论文题名: A simple model of the response of the atlantic to the north atlantic oscillation
作者: Zhai X. ; Johnson H.L. ; Marshall D.P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 11 起始页码: 4052
结束页码: 4069
语种: 英语
Scopus关键词: Atmospheric pressure
; Gyre circulation
; Low frequency variability
; Meridional overturning circulations
; North Atlantic oscillations
; Ocean heat content
; Reduced-gravity model
; Stochastic winds
; Western boundary
; Stochastic systems
; Ekman pumping
; meridional circulation
; modeling
; North Atlantic Oscillation
; Rossby wave
; stochasticity
; thermohaline structure
; wind forcing
; Atlantic Ocean
英文摘要: The response of an idealized Atlantic Ocean to wind and thermohaline forcing associated with the North Atlantic Oscillation (NAO) is investigated both analytically and numerically in the framework of a reducedgravity model. The NAO-related wind forcing is found to drive a time-dependent ''leaky'' gyre circulation that integrates basinwide stochastic wind Ekman pumping and initiates low-frequency variability along the western boundary. This is subsequently communicated, together with the stochastic variability induced by thermohaline forcing at high latitudes, to the remainder of the Atlantic via boundary and Rossby waves. At low frequencies, the basinwide ocean heat content changes owing to NAO wind forcing and thermohaline forcing are found to oppose each other. The model further suggests that the recently reported opposing changes of the meridional overturning circulation in the Atlantic subtropical and subpolar gyres between 1950-70 and 1980-2000 may be a generic feature caused by interplay between the NAO wind and thermohaline forcing. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51404
Appears in Collections: 气候变化事实与影响
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作者单位: Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom; Department of Earth Sciences, University of Oxford, Oxford, United Kingdom; Department of Physics, University of Oxford, Oxford, United Kingdom
Recommended Citation:
Zhai X.,Johnson H.L.,Marshall D.P.. A simple model of the response of the atlantic to the north atlantic oscillation[J]. Journal of Climate,2014-01-01,27(11)