气候变化领域集成服务门户(CCPortal): Distinguishing the impacts of ozone and ozone-depleting substances on the recent increase in Antarctic surface mass balance

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DOI	10.5194/tc-14-4135-2020
	Distinguishing the impacts of ozone and ozone-depleting substances on the recent increase in Antarctic surface mass balance
	Chemke R.; Previdi M.; England M.R.; Polvani L.M.
发表日期	2020
ISSN	19940416
起始页码	4135
结束页码	4144
卷号	14 期号:11
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).
英文关键词	cryosphere; mass balance; ozone; ozone depletion; Southern Ocean
语种	英语
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202046
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
推荐引用方式 GB/T 7714	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],2020,14(11).
APA	Chemke R.,Previdi M.,England M.R.,&Polvani L.M..(2020).Distinguishing the impacts of ozone and ozone-depleting substances on the recent increase in Antarctic surface mass balance.Cryosphere,14(11).
MLA	Chemke R.,et al."Distinguishing the impacts of ozone and ozone-depleting substances on the recent increase in Antarctic surface mass balance".Cryosphere 14.11(2020).