DOI: 10.1002/2013GL058466
论文题名: Is climate sensitivity related to dynamical sensitivity? A Southern Hemisphere perspective
作者: Grise K.M. ; Polvani L.M.
刊名: Geophysical Research Letters
ISSN: 0094-10462
EISSN: 1944-10193
出版年: 2014
卷: 41, 期: 2 起始页码: 534
结束页码: 540
语种: 英语
英文关键词: climate sensitivity
; dynamical sensitivity
; Hadley circulation
; midlatitude jet
; Southern Hemisphere
Scopus关键词: Carbon dioxide
; Climatology
; Expansion
; Greenhouse gases
; Climate sensitivity
; dynamical sensitivity
; Hadley circulation
; Midlatitudes
; Southern Hemisphere
; Climate models
; dynamic response
; extratropical environment
; greenhouse gas
; Hadley cell
; jet
; Southern Hemisphere
英文摘要: This study examines whether the spread in the climate sensitivity of Coupled Model Intercomparison Project Phase 5 (CMIP5) models also captures the spread in the Southern Hemisphere dynamical response to greenhouse gas forcing. Three metrics are proposed to quantify the "dynamical sensitivity" of the Southern Hemisphere: the poleward expansion of the Hadley circulation, the poleward expansion of the subtropical dry zone, and the poleward shift of the midlatitude jet. In the CMIP5 abrupt 4 × CO2 integrations, the expansion of the Hadley circulation is well correlated with climate sensitivity in all seasons; in contrast, the shifts in the subtropical dry zone and midlatitude jet are significantly correlated with climate sensitivity only in summer and fall. In winter, those responses are more strongly linked to the control climatology in each model. Thus, a narrow focus on traditional climate sensitivity alone might miss out on important features of the atmospheric circulation's response to increasing greenhouse gases, particularly in the extratropics. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892461932&doi=10.1002%2f2013GL058466&partnerID=40&md5=17dfc938bbcfbdca9169852daddccb87
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7726
Appears in Collections: 气候减缓与适应
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作者单位: Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Recommended Citation:
Grise K.M.,Polvani L.M.. Is climate sensitivity related to dynamical sensitivity? A Southern Hemisphere perspective[J]. Geophysical Research Letters,2014-01-01,41(2).