| DOI: | 10.1002/2016GL070396
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| 论文题名: | Narrowing of the ITCZ in a warming climate: Physical mechanisms |
| 作者: | Byrne M.P.; Schneider T.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8438
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| EISSN: | 1944-8169
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| 出版年: | 2016
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| 卷: | 43, 期:21 | | 起始页码: | 11350
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| 结束页码: | 11357
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| 语种: | 英语
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| 英文关键词: | atmospheric energy budget
; climate change
; ITCZ narrowing
; physical mechanisms
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| Scopus关键词: | Budget control
; Climate change
; Global warming
; Atmospheric energy
; Future climate
; Intertropical convergence zone
; ITCZ narrowing
; Moist static energy
; Physical mechanism
; Tropical atmospheres
; Warming climate
; Climate models
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| 英文摘要: | The Intertropical Convergence Zone (ITCZ) narrows in response to global warming in both observations and climate models. However, a physical understanding of this narrowing is lacking. Here we show that the narrowing of the ITCZ in simulations of future climate is related to changes in the moist static energy (MSE) budget. MSE advection by the mean circulation and MSE divergence by transient eddies tend to narrow the ITCZ, while changes in net energy input to the atmosphere and the gross moist stability tend to widen the ITCZ. The narrowing tendency arises because the meridional MSE gradient strengthens with warming, whereas the largest widening tendency is due to increasing shortwave heating of the atmosphere. The magnitude of the ITCZ narrowing depends strongly on the gross moist stability and clouds, emphasizing the need to better understand these fundamental processes in the tropical atmosphere. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84998706967&doi=10.1002%2f2016GL070396&partnerID=40&md5=0e92294fd28f7e9523ca2418b5fdc2bd
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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/9401
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Geological Institute, ETH Zürich, Zürich, Switzerland
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| Recommended Citation: | |
Byrne M.P.,Schneider T.. Narrowing of the ITCZ in a warming climate: Physical mechanisms[J]. Geophysical Research Letters,2016-01-01,43(21).
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