Collaborative Research: Integrating proxies and Earth System Models to elucidate water cycle dynamics:Did global warming cause an enhanced hydrological cycle in the Eocene?

合作研究：整合代理和地球系统模型来阐明水循环动态：全球变暖是否导致始新世水文循环增强？

• 批准号: 0902993
• 负责人: Mark Pagani
• 金额: $ 27.27万
• 依托单位: Yale University
• 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: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0902993&HistoricalAwards=false
• 关键词: Collaborative; Research; Integrating; proxies; Earth

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Does global warming increase the vigor of the hydrological cycle? This question forms the overall research theme of this study, which investigates the role of hydrological cycle feedbacks in climate change using a combination of proxy reconstructions and Earth System Models. The PIs focus on the early Paleogene, particularly on periods of extreme climate such as the Early and Middle Eocene Climatic Optima and the Eocene-Oligocene transition. Related questions that will be addressed are: 1) Is global warming associated with substantial poleward extension of the Hadley circulation and subtropical dry zones?, 2) Do mid-latitude storm tracks move poleward carrying precipitation, water vapor, and latent heat with them?, and 3) Do changes in the atmospheric water transport and runoff alter oceanic deep water formation and meridional overturning? The PIs will also address questions specific to Eocene paleoclimate studies. Broader impacts include strong societal relevance, education programs including integration of the research into the Urbino Summer School in Paleoclimate and outreach to STEM programs, and training of 3 PhD students.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。全球变暖是否增加了水循环的活力？这个问题形成了本研究的总体研究主题，该研究使用代理重建和地球系统模型相结合的方法，研究水文循环反馈在气候变化中的作用。PI侧重于古近纪早期，特别是极端气候时期，如始新世早期和中期气候最佳时期以及始新世-渐新世过渡时期。将解决的相关问题是：1）全球变暖与哈德利环流和亚热带干旱区的大量向极延伸有关吗？2)中纬度风暴路径是否携带着降水、水汽和潜热向极地移动？3）大气水分输送和径流的变化是否会改变海洋深水的形成和经向翻转？PI还将解决始新世古气候研究的具体问题。更广泛的影响包括强大的社会相关性，教育计划，包括研究融入古气候乌尔比诺暑期学校和推广STEM计划，以及3名博士生的培训。