Modeling Large-scale Dynamical Effects on Climate

模拟大规模动态对气候的影响

• 批准号: 0123999
• 负责人: Raymond Pierrehumbert
• 金额: --
• 依托单位: University of Chicago
• 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: 2002-04-01 至 2009-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0123999&HistoricalAwards=false
• 关键词: Modeling; Large; scale; Dynamical; Effects

The project will investigate a number of fundamental processes governing the past, present, and future climates of the Earth. The major themes are intermediate complexity climate models applied to climate change and paleoclimate problems, observational and theoretical work relating to water vapor feedback, and statistical theories of scalar tracers and mixing with applications in both the troposphere and stratosphere. A notable feature of this effort is its emphasis on theoretical understanding. The project's focus is to improve understanding of the coupling between tropical and extratropical regions. The linkage between tropical moisture sources and moisture distribution in the extratropics (where water vapor can significantly impact the radiative cooling to space) motivates project activities in statistical mechanics of the mixing of atmospheric constituents, and Hadley cell dynamics and transports. Dr. Pierrehumbert will investigate the role of these processes in climate variability and global change by conducting experiments with climate models that are simpler and faster than general circulation models but which retain sufficient dynamics and resolution to represent realistically heat transport, water vapor feedback, and other physical processes. The project will advance theoretical understanding and modeling of dynamical, thermodynamical, and chemical interactions between the tropics and extratropics, in context of climate variability and global change.

该项目将调查一些基本的过程，管理过去，现在和未来的地球气候。主要主题是应用于气候变化和古气候问题的中等复杂性气候模式，与水汽反馈有关的观测和理论工作，标量示踪剂的统计理论以及在对流层和平流层的混合应用。这一努力的一个显著特点是强调理论理解。该项目的重点是提高对热带和热带以外地区之间相互作用的认识。热带水汽来源与热带外地区（水汽可对空间辐射冷却产生重大影响）的水汽分布之间的联系，激发了在大气成分混合统计力学以及哈德利环流动力学和输送方面的项目活动。Pierrehumbert博士将研究这些过程在气候变率和全球变化中的作用，方法是用比大气环流模型更简单、更快的气候模型进行实验，但这些模型保留了足够的动力学和分辨率，以真实地代表热传输、水汽反馈和其他物理过程。该项目将在气候变率和全球变化的背景下，推进对热带和热带外地区之间动力学、化学和化学相互作用的理论理解和建模。