| DOI: | 10.1002/2014GL059336
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| 论文题名: | The influence of regional feedbacks on circulation sensitivity |
| 作者: | Feldl N.; Frierson D.M.W.; Roe G.H.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10220
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| EISSN: | 1944-9951
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| 出版年: | 2014
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| 卷: | 41, 期:6 | | 起始页码: | 2212
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| 结束页码: | 2220
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| 语种: | 英语
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| 英文关键词: | climate sensitivity
; feedback
; Hadley circulation
; Walker circulation
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| Scopus关键词: | Carbon dioxide
; Global warming
; Heat flux
; Tropics
; Atmospheric circulation
; Circulation systems
; Climate sensitivity
; Global sensitivity
; Hadley circulation
; Hydrological cycles
; Overturning circulation
; Walker circulation
; Feedback
; air-sea interaction
; carbon dioxide
; climate feedback
; climate modeling
; global warming
; Hadley cell
; heat flux
; hydrological cycle
; overturn
; Walker circulation
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| 英文摘要: | Weakening of the tropical overturning circulation in a warmer world is a robust feature in climate models. Here an idealized representation of ocean heat flux drives a Walker cell in an aquaplanet simulation. A goal of the study is to assess the influence of the Walker circulation on the magnitude and structure of climate feedbacks, as well as to global sensitivity. We compare two CO 2 perturbation experiments, one with and one without a Walker circulation, to isolate the differences attributable to tropical circulation and associated zonal asymmetries. For an imposed Walker circulation, the subtropical shortwave cloud feedback is reduced, which manifests as a weaker tropical-subtropical anomalous energy gradient and consequently a weaker slow down of the Hadley circulation, relative to the case without a Walker circulation. By focusing on the coupled feedback circulation system, these results offer insights into understanding changes in atmospheric circulation and hence the hydrological cycle under global warming. © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896551772&doi=10.1002%2f2014GL059336&partnerID=40&md5=ca26da995697862b06626fe7a6871e87
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7484
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Environmental Science and Engineering, California Institute of Technology, Pasadena, CA, United States
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| Recommended Citation: | |
Feldl N.,Frierson D.M.W.,Roe G.H.. The influence of regional feedbacks on circulation sensitivity[J]. Geophysical Research Letters,2014-01-01,41(6).
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