PostDoctoral Research Fellowship

博士后研究奖学金

• 批准号: 0851695
• 负责人: Douglas Kowalewski
• 金额: $ 14万
• 依托单位: Kowalewski Douglas E
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-05-01 至 2011-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0851695&HistoricalAwards=false
• 关键词: PostDoctoral; Research; Fellowship

This award supports a Postdoctoral Fellow?Dr. Douglas Kowalewski?in developing a regional climate model for the McMurdo area of Antarctica. The project addresses one of the most interesting questions in Antarctic science: how stable is the East Antarctic Ice Sheet (EAIS)? The answer is critical to interpreting records of global climate change from marine sediment cores, as well as modeling sea level rise associated with global warming. Evidence from the McMurdo Dry Valleys has been interpreted to indicate that the EAIS has been stable for up to fourteen million years. However, the ANDRILL marine sediment cores collected just 100 km offshore support a much more dynamic ice sheet that includes complete loss of the Ross Ice Shelf, potentially requiring a dynamic EAIS. This apparent contradiction led to a new hypothesis: perhaps these records are not contradictory at all? Maybe climate varies dramatically across this region on scales of tens of kilometers? The hypotheses will be evaluated by a mesoscale climate model to characterize variations in regional climate. The work is being performed at the University of Massachusetts.

该奖项支持博士后研究员？道格拉斯·科瓦勒夫斯基 (Douglas Kowalewski) 正在为南极洲麦克默多地区开发区域气候模型。该项目解决了南极科学中最有趣的问题之一：东南极冰盖（EAIS）的稳定性如何？这个答案对于解释海洋沉积物核心的全球气候变化记录以及模拟与全球变暖相关的海平面上升至关重要。来自麦克默多干谷的证据被解释为表明 EAIS 已经稳定了长达 1400 万年。然而，ANDRILL 海洋沉积物岩心仅在离岸 100 公里处收集，支持更加动态的冰盖，其中包括罗斯冰架的完全消失，可能需要动态 EAIS。这种明显的矛盾引发了一个新的假设：也许这些记录根本就不矛盾？也许这个地区的气候在几十公里范围内变化很大？这些假设将通过中尺度气候模型进行评估，以表征区域气候的变化。这项工作正在马萨诸塞大学进行。