| 项目编号: | 1341497
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| 项目名称: | The Hydroclimate of Antarctica |
| 作者: | Cecilia Bitz
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| 承担单位: | University of Washington
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| 批准年: | 2013
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| 开始日期: | 2014-02-15
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| 结束日期: | 2018-01-31
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| 资助金额: | USD421132
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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: | southern ocean
; sea ice
; last ~
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| 英文摘要: | The Antarctic atmospheric water cycle couples freshwater input to the Southern Ocean. The strength of ocean convective overturning (the meridonal overturning circulation) and its influence on the upwelling of heat is governed in large part by these freshwater sources. Understanding the water cycle is fundamental to estimating ocean heat uptake in the Southern Ocean and determining why Antarctic sea ice has expanded in the last ~30 years, notably different from the Arctic. The hydrologic cycle is in turn strongly coupled to the climate. Precipitation influences the albedo of sea ice, depending on whether it falls as snow or rain, and contributes freshwater to the Southern Ocean, while sea ice and sea surface temperature influence evaporation and atmospheric circulation and their association with moisture and heat transport to Antarctica.
A series of sensitivity experiments are proposed to gain understanding of the system and test means of improving model biases. The ultimate integration will utilize these model improvements to attribute Southern Ocean and Antarctic climate change over the last ~30 years
The project advances understanding of past and future climate change from rising greenhouse gas concentrations and ozone depletion. The results will inform future projections of Antarctic ice mass balance and the resulting global sea level rise. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/97348
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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: | |
Cecilia Bitz. The Hydroclimate of Antarctica. 2013-01-01.
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