| DOI: | 10.1175/JCLI-D-13-00192.1
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| Scopus记录号: | 2-s2.0-84884221915
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| 论文题名: | Why tropical sea surface temperature is insensitive to ocean heat transport changes |
| 作者: | Koll D.D.B.; Abbot D.S.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2013
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| 卷: | 26, 期:18 | | 起始页码: | 6742
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| 结束页码: | 6749
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| 语种: | 英语
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| Scopus关键词: | Cloud feedbacks
; Degree of freedom
; Global climate model
; Hadley circulation
; Ocean heat transport
; Radiative effects
; Sea surface temperature (SST)
; Warm climates
; Evaporation
; Heat transfer
; Tropics
; Oceanography
; air-sea interaction
; climate modeling
; cloud cover
; evaporation
; Hadley cell
; heat transfer
; sea surface temperature
; shortwave radiation
; surface wind
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| 英文摘要: | Previous studies have shown that increases in poleward ocean heat transport (OHT) do not strongly affect tropical SST. The goal of this paper is to explain this observation. To do so, the authors force two atmospheric global climate models (GCMs) in aquaplanet configuration with a variety of prescribed OHTs. It is found that increased OHT weakens the Hadley circulation, which decreases equatorial cloud cover and shortwave reflection, as well as reduces surface winds and evaporation, which both limit changes in tropical SST. The authors also modify one of the GCMs by alternatively setting the radiative effect of clouds to zero and disabling wind-driven evaporation changes to show that the cloud feedback is more important than the wind-evaporation feedback for maintaining constant equatorial SST as OHT changes. This work highlights the fact that OHT can reduce the meridional SST gradient without affecting tropical SST and could therefore serve as an additional degree of freedom for explaining past warm climates. © 2013 American Meteorological Society. |
| 资助项目: | NSF, National Science Foundation
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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/51677
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Department of the Geophysical Sciences, University of Chicago, Chicago, IL, United States
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| Recommended Citation: | |
Koll D.D.B.,Abbot D.S.. Why tropical sea surface temperature is insensitive to ocean heat transport changes[J]. Journal of Climate,2013-01-01,26(18)
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