globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-013-1777-x
Scopus记录号: 2-s2.0-84897576830
论文题名:
Stratospheric ozone depletion: A key driver of recent precipitation trends in South Eastern South America
作者: Gonzalez P.L.M.; Polvani L.M.; Seager R.; Correa G.J.P.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期:2017-07-08
起始页码: 1775
结束页码: 1792
语种: 英语
英文关键词: Ozone depletion ; Precipitation ; South America
英文摘要: On a hemispheric scale, it is now well established that stratospheric ozone depletion has been the principal driver of externally forced atmospheric circulation changes south of the Equator in the last decades of the 20th Century. The impact of ozone depletion has been felt over the entire hemisphere, as reflected in the poleward drift of the midlatitude jet, the southward expansion of the summertime Hadley cell and accompanying precipitation trends deep into the subtropics. On a regional scale, however, surface impacts directly attributable to ozone depletion have yet to be identified. In this paper we focus on South Eastern South America (SESA), a region that has exhibited one of the largest wetting trends during the 20th Century. We study the impact of ozone depletion on SESA precipitation using output from 6 different climate models, spanning a wide range of complexity. In all cases we contrast pairs of model integrations with and without ozone depletion, but with all other forcings identically specified. This allows for unambiguous attribution of the computed precipitation trends. All 6 climate models consistently reveal that stratospheric ozone depletion results in a significant wetting of SESA over the period 1960-1999. Taken as a whole, these model results strongly suggest that the impact of ozone depletion on SESA precipitation has been as large as, and quite possibly larger than, the one caused by increasing greenhouse gases over the same period. © 2013 The Author(s).
资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54367
Appears in Collections:过去全球变化的重建

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作者单位: International Research Institute for Climate and Society, Columbia University, 61 Route 9W, 202b Monell, Palisades, NY, 10964, United States; Department of Applied Physics and Applied Mathematics, Columbia University, 500 West 120th Street, S.W. Mudd, 216, NY, NY, 10027, United States; Department of Earth and Environmental Sciences, Columbia University, 500 West 120th Street, S.W. Mudd, 216, NY, NY, 10027, United States; Lamont-Doherty Earth Observatory, Columbia University, 61 Route 9W, Oceanography, Palisades, NY, 10964, United States

Recommended Citation:
Gonzalez P.L.M.,Polvani L.M.,Seager R.,et al. Stratospheric ozone depletion: A key driver of recent precipitation trends in South Eastern South America[J]. Climate Dynamics,2014-01-01,42(2017-07-08)
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