globalchange  > 气候变化与战略
DOI: 10.5194/tc-14-4135-2020
论文题名:
Distinguishing the impacts of ozone and ozone-depleting substances on the recent increase in Antarctic surface mass balance
作者: Chemke R.; Previdi M.; England M.R.; Polvani L.M.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期:11
起始页码: 4135
结束页码: 4144
语种: 英语
英文关键词: cryosphere ; mass balance ; ozone ; ozone depletion ; Southern Ocean
英文摘要: The Antarctic surface mass balance (SMB) has global climatic impacts through its effects on global sea-level rise. The forced increase in Antarctic SMB over the second half of the 20th century was argued to stem from multiple forcing agents, including ozone and ozone-depleting substances (ODSs). Here we use ensembles of fixed-forcing model simulations to quantify and contrast the contributions of stratospheric ozone, tropospheric ozone and ODSs to increases in the Antarctic SMB. We show that ODSs and stratospheric ozone make comparable contributions and together account for 44 % of the increase in the annual mean Antarctic SMB over the second half of the 20th century. In contrast, tropospheric ozone has an insignificant impact on the SMB increase. A large portion of the annual mean SMB increase occurs during austral summer, when stratospheric ozone is found to account for 63% of the increase. Furthermore, we demonstrate that stratospheric ozone increases the SMB by enhancing the meridional mean and eddy flows towards the continent, thus converging more water vapor over the Antarctic. © 2020 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164424
Appears in Collections:气候变化与战略

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作者单位: Department of Earth and Planetary Sciences, Weizmann Institute of Science, Rehovot, Israel; Department of Applied Physics and Applied Mathematics, Columbia University, New York, NY, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Department of Climate Atmospheric Science, and Physical Oceanography, Scripps Institution of Oceanography, Ucsd, San Diego, CA, United States; Department of Physics and Physical Oceanography, University of North Carolina, Wilmington, NC, United States

Recommended Citation:
Chemke R.,Previdi M.,England M.R.,et al. Distinguishing the impacts of ozone and ozone-depleting substances on the recent increase in Antarctic surface mass balance[J]. Cryosphere,2020-01-01,14(11)
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