| 项目编号: | 1341657
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| 项目名称: | Stratospheric Ozone Depletion and Recovery and Antarctic Climate Change |
| 作者: | Michael Previdi
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| 承担单位: | Columbia University
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| 批准年: | 2013
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| 开始日期: | 2014-04-01
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| 结束日期: | 2017-03-31
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| 资助金额: | USD629920
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Polar
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| 英文关键词: | antarctic climate
; environmental change
; climate consequence
; stratospheric ozone
; ozone change
; large scale climate effect
; whole atmosphere community climate model
; chemistry-climate model
; ghg climate effect
; past anthropogenic depletion
; future ozone
; climate change
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| 英文摘要: | Climate change in the Antarctic, along with its several global consequences (e.g. sea-level rise associated with surface mass balance of the Antarctic ice sheet) are often attributed in terms of rising greenhouse-gas (GHG) forcing. Ozone, especially that residing in the stratosphere, is another radiatively important gas whose past anthropogenic depletion also has climate consequences e.g. intensification of the polar night jet during spring. GHG concentrations will continue to rise over the remainder of this century, whereas stratospheric ozone is expected to recover, following the Montreal Protocol, leaving some uncertainty in the resulting circulation trends in the Southern Hemisphere.
Linkages between ozone change and four aspects of Antarctic climate namely: i) Antarctic surface temperatures, ii) cloud cover, iii) sea-ice and ice-sheet mass balance will be investigated by a series of earth systems model experiments. Two different types of models will be utilized, the first being a coupled chemistry-climate model, the Whole Atmosphere Community Climate Model (WACCM). The second will be a stand-alone ice sheet model, the Ice Sheet System Model (ISSM), which will be forced with the atmospheric fields from the WACCM runs. Simulations that only vary atmospheric greenhouse gas (GHG) amounts will further permit comparison between future ozone and GHG climate effects.
These large scale climate effects are also of direct societal and economic interest. Antarctic climate and environmental change has far reaching impacts through its ties to biogeochemical cycling of carbon, ocean circulation and global sea level rise. The latter are highly relevant to society, and thus understanding the causes of Antarctic climate change |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/97209
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Michael Previdi. Stratospheric Ozone Depletion and Recovery and Antarctic Climate Change. 2013-01-01.
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