Stratospheric Influences on the Troposphere

平流层对对流层的影响

• 批准号: 0314094
• 负责人: R. Alan Plumb
• 金额: --
• 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: 2003
• 资助国家: 美国
• 起止时间: 2003-05-01 至 2007-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0314094&HistoricalAwards=false
• 关键词: Stratospheric; Influences; Troposphere

This project will address how changes in the structure and circulation of the stratosphere may impact on the troposphere circulation, and by extension, surface climate. The main focus of the project is to investigate if the dynamics of the troposphere has a sensitivity to the dynamical and thermal structure of the stratosphere. Three possible mechanisms will be considered initially: (1) the backward reflection of upward propagating planetary-scale Rossby waves; (2) the remote interaction for non-vertically-propagating waves such as those that are found in classical treatments of baroclinic instability, and (3) the meridional circulation via the "downward control" principle. Each of these will be considered separately in simplified process models, and collectively through three-dimensional modeling.Broader Impacts: This work will benefit the climate modeling community by improving our understanding of the way in which the troposphere and stratosphere interact, enabling improved model parameterization. One student will be supported by this project.

该项目将研究平流层结构和环流的变化如何影响对流层环流，进而影响地面气候。该项目的主要重点是调查对流层的动力学是否对平流层的动力学和热结构敏感。首先将考虑三种可能的机制：（1）向上传播的行星尺度Rossby波的后向反射;（2）非垂直传播波的远程相互作用，例如在斜压不稳定性的经典处理中发现的那些;和（3）通过“向下控制”原理的纬向环流。更广泛的影响：这项工作将使气候模拟界受益，提高我们对对流层和平流层相互作用方式的理解，从而改进模式参数化。一名学生将得到该项目的资助。