Collaborative Research: The Influence of Snow Cover on Northern Hemisphere Climate Variability

合作研究：积雪对北半球气候变化的影响

• 批准号: 0127667
• 负责人: Dara Entekhabi
• 金额: $ 13.6万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-15 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0127667&HistoricalAwards=false
• 关键词: Collaborative; Research; Influence; Snow; Cover

Under their previous grant, the PIs have shown that diabatic heat anomalies at the surface due to snow have large and extensive impacts on atmospheric dynamics, especially in mid- to high-latitudes of the Northern Hemisphere (NH). Work under this award will examine the role of snow cover in forcing or triggering the dominant mode of variability of NH winter climate. Two parallel paths of research will be followed: (i) to focus on the relationship between Eurasian snow cover and winter climate through observational analysis; and (ii) to study cause and effect mechanisms using general circulation modeling. The work is important because it will enhance understanding of NH winter climate variability, and consequently, the potential of improved seasonal forecasting. This has great societal benefits.

在他们先前的赠款下，PIS表明，由于降雪引起的地表的绝症异常对大气动力学产生了巨大的影响，尤其是在北半球（NH）的高腹部。该奖项下的工作将研究雪覆盖在强迫或触发NH冬季气候变异性的主要变化模式中的作用。将遵循两种平行的研究路径：（i）通过观察分析专注于欧亚雪覆盖与冬季气候之间的关系； （ii）使用一般循环模型研究原因和影响机制。这项工作很重要，因为它将增强对NH冬季气候变异性的理解，从而提高了改善季节性预测的潜力。这具有巨大的社会利益。