DOI: 10.1002/2014GL060868
论文题名: A mechanism for future changes in Hadley circulation strength in CMIP5 climate change simulations
作者: Seo K.-H. ; Frierson D.M.W. ; Son J.-H.
刊名: Geophysical Research Letters
ISSN: 0094-9919
EISSN: 1944-9650
出版年: 2014
卷: 41, 期: 14 起始页码: 5251
结束页码: 5258
语种: 英语
英文关键词: CMIP5
; future change
; Hadley cell
Scopus关键词: Clouds
; Computer simulation
; Global warming
; Thermal gradients
; Climate change simulations
; CMIP5
; Coupled Model Intercomparison Project
; future change
; Hadley cells
; Meridional temperature gradient
; Multi-model ensemble
; Potential temperature
; Climate models
; air mass
; climate change
; climate modeling
; meridional circulation
; Northern Hemisphere
; seasonal variation
; simulation
; twenty first century
英文摘要: The Coupled Model Intercomparison Project Phase 5 (CMIP5) 21st century climate change simulations exhibit a robust (slight) weakening of the Hadley cell (HC) during the boreal winter (summer, respectively) season in the future climate. Using 30 different coupled model simulations, we investigate the main mechanisms for both the multimodel ensemble mean changes in the HC strength and its intermodel changes in response to global warming during these seasons. A simple scaling analysis relates the strength of the HC to three factors: the meridional potential temperature gradient, gross static stability, and tropopause height. We found that changes in the meridional potential temperature gradients across the subtropics in a warming climate play a crucial role in the ensemble mean changes and model-to-model variations in the HC strength for both seasons. A larger reduction in the meridional temperature gradient in the Northern Hemisphere in boreal winter leads to the larger reduction of the HC strength in that season. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906355742&doi=10.1002%2f2014GL060868&partnerID=40&md5=1217c9fa166cc9ad686b6d6c816d39f9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7183
Appears in Collections: 气候减缓与适应
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作者单位: Department of Atmospheric Sciences, Pusan National University, Busan, South Korea
Recommended Citation:
Seo K.-H.,Frierson D.M.W.,Son J.-H.. A mechanism for future changes in Hadley circulation strength in CMIP5 climate change simulations[J]. Geophysical Research Letters,2014-01-01,41(14).