| DOI: | 10.1175/JCLI-D-15-0767.1
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| Scopus记录号: | 2-s2.0-84977487007
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| 论文题名: | Energetic constraints on the width of the intertropical convergence zone |
| 作者: | Byrne M.P.; Schneider T.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2016
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| 卷: | 29, 期:13 | | 起始页码: | 4709
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| 结束页码: | 4721
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| 语种: | 英语
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| Scopus关键词: | Atmospheric radiation
; Budget control
; Climate models
; Climatology
; Meteorology
; Tropical engineering
; Tropics
; Atmospheric circulation
; Energy budget/balance
; Geographic location
; Hadley circulation
; Intertropical convergence zone
; Climate change
; atmospheric circulation
; climate change
; climate modeling
; climatology
; energy balance
; Hadley cell
; intertropical convergence zone
; tropical region
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| 英文摘要: | The intertropical convergence zone (ITCZ) has been the focus of considerable research in recent years, with much of this work concerned with how the latitude of maximum tropical precipitation responds to natural climate variability and to radiative forcing. The width of the ITCZ, however, has received little attention despite its importance for regional climate and for understanding the general circulation of the atmosphere. This paper investigates the ITCZ width in simulations with an idealized general circulation model over a wide range of climates. The ITCZ, defined as the tropical region where there is time-mean ascent, displays rich behavior as the climate varies, widening with warming in cool climates, narrowing in temperate climates, and maintaining a relatively constant width in hot climates. The mass and energy budgets of the Hadley circulation are used to derive expressions for the area of the ITCZ relative to the area of the neighboring descent region, and for the sensitivity of the ITCZ area to changes in climate. The ITCZ width depends primarily on four quantities: the net energy input to the tropical atmosphere, the advection of moist static energy by the Hadley circulation, the transport of moist static energy by transient eddies, and the gross moist stability. Different processes are important for the ITCZ width in different climates, with changes in gross moist stability generally having a weak influence relative to the other processes. The results are likely to be useful for analyzing the ITCZ width in complex climate models and for understanding past and future climate change in the tropics. © 2016 American Meteorological Society. |
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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/50048
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | ETH Zürich, Zürich, Switzerland; California Institute of Technology, Pasadena, CA, United States
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| Recommended Citation: | |
Byrne M.P.,Schneider T.. Energetic constraints on the width of the intertropical convergence zone[J]. Journal of Climate,2016-01-01,29(13)
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