DOI: 10.1002/2015GL064314
论文题名: Inability of stratospheric sulfate aerosol injections to preserve the West Antarctic Ice Sheet
作者: McCusker K.E. ; Battisti D.S. ; Bitz C.M.
刊名: Geophysical Research Letters
ISSN: 0094-8671
EISSN: 1944-8402
出版年: 2015
卷: 42, 期: 12 起始页码: 4989
结束页码: 4997
语种: 英语
英文关键词: Antarctic ice sheets
; climate change
; climate engineering
; solar radiation management
Scopus关键词: Aerosols
; Climate change
; Climate models
; Glaciers
; Global warming
; Greenhouse gases
; Sea level
; Sulfur compounds
; Antarctic ice sheets
; Atmospheric circulation changes
; Greenhouse gases (GHG)
; Pine island glaciers
; Pre-industrial levels
; Radiation management
; Stratospheric aerosols
; West antarctic ice sheets
; Ice
; aerosol
; basal melting
; climate effect
; climate modeling
; global warming
; greenhouse gas
; sea level change
; solar radiation
; stratosphere
; sulfate
; upwelling
; Antarctic Ice Sheet
; Antarctica
; Pine Island Glacier
; West Antarctic Ice Sheet
; West Antarctica
英文摘要: Injection of sulfate aerosols into the stratosphere has the potential to reduce the climate impacts of global warming, including sea level rise (SLR). However, changes in atmospheric and oceanic circulation that can significantly influence the rate of basal melting of Antarctic marine ice shelves and the associated SLR have not previously been considered. Here we use a fully coupled global climate model to investigate whether rapidly increasing stratospheric sulfate aerosol concentrations after a period of global warming could preserve Antarctic ice sheets by cooling subsurface ocean temperatures. We contrast this climate engineering method with an alternative strategy in which all greenhouse gases (GHG) are returned to preindustrial levels. We find that the rapid addition of a stratospheric aerosol layer does not effectively counteract surface and upper level atmospheric circulation changes caused by increasing GHGs, resulting in continued upwelling of warm water in proximity of ice shelves, especially in the vicinity of the already unstable Pine Island Glacier in West Antarctica. By contrast, removal of GHGs restores the circulation, yielding relatively cooler subsurface ocean temperatures to better preserve West Antarctica. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84948717891&doi=10.1002%2f2015GL064314&partnerID=40&md5=e13e0208737fbcfbfc3361cb1ad3a7b2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8287
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: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
McCusker K.E.,Battisti D.S.,Bitz C.M.. Inability of stratospheric sulfate aerosol injections to preserve the West Antarctic Ice Sheet[J]. Geophysical Research Letters,2015-01-01,42(12).