DOI: 10.1175/JCLI-D-15-0651.1
Scopus记录号: 2-s2.0-84991261989
论文题名: The role of ocean heat transport in the global climate response to projected arctic sea ice loss
作者: Tomas R.A. ; Deser C. ; Sun L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 19 起始页码: 6841
结束页码: 6859
语种: 英语
Scopus关键词: Atmospheric temperature
; Atmospheric thermodynamics
; Climate models
; Climatology
; Feedback
; Heat transfer
; Ice
; Mechanical waves
; Meteorology
; Sea ice
; Surface waters
; Thermodynamics
; Atmosphere-ocean interactions
; Atmospheric circulation
; Community climate system model
; Coupled climate systems
; Intertropical convergence zone
; Large scale motion
; Sea Surface Temperature gradients
; Teleconnections
; Oceanography
英文摘要: The purpose of this study is to elucidate the individual and combined roles of thermodynamic and dynamic ocean-atmosphere coupling in the equilibrium global climate response to projected Arctic sea ice loss using a suite of experiments conducted with Community Climate System Model, version 4, at 1° latitude-longitude spatial resolution. The results highlight the contrasting spatial structures and partially compensating effects of thermodynamic and dynamic coupling. In combination, thermodynamic and dynamic coupling produce a response pattern that is largely symmetric about the equator, whereas thermodynamic coupling alone yields an antisymmetric response. The latter is characterized by an interhemispheric sea surface temperature (SST) gradient, with maximum warming at high northern latitudes decreasing toward the equator, which displaces the intertropical convergence zone (ITCZ) and Hadley circulation northward. In contrast, the fully coupled response shows enhanced warming at high latitudes of both hemispheres and along the equator; the equatorial warming is driven by anomalous ocean heat transport convergence and is accompanied by a narrow equatorward intensification of the northern and southern branches of the ITCZ. In both cases, the tropical precipitation response to Arctic sea ice loss feeds back onto the atmospheric circulation at midlatitudes via Rossby wave dynamics, highlighting the global interconnectivity of the coupled climate system. This study demonstrates the importance of ocean dynamics in mediating the equilibrium global climate response to Arctic sea ice loss. © 2016 American Meteorological Society. 资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50036
Appears in Collections: 气候变化事实与影响
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作者单位: Climate and Global Dynamics Division, National Center for Atmospheric Research, Boulder, CO, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; NOAA/Earth System Research Laboratory, Boulder, CO, United States
Recommended Citation:
Tomas R.A.,Deser C.,Sun L.. The role of ocean heat transport in the global climate response to projected arctic sea ice loss[J]. Journal of Climate,2016-01-01,29(19)