Dynamical Processes of Equatorial Atmospheric Angular Momentum

赤道大气角动量的动力学过程

• 批准号: 0514034
• 负责人: Steven Feldstein
• 金额: $ 16.79万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0514034&HistoricalAwards=false
• 关键词: Dynamical; Processes; Equatorial; Atmospheric; Angular

In this project the PI will explore the physical processes that drive the intra-seasonal fluctuations of equatorial atmospheric angular momentum, which account for half of the variance of equatorial atmospheric angular momentum. The research focuses on four topics: the dynamical mechanisms by which the mountain torque alters the amplitude and phase of the equatorial atmospheric angular momentum vector, a comparison of the relative importance of the processes driving the intra-seasonal fluctuations, the relationship between equatorial atmospheric angular momentum dynamics and the background flow, and how atmospheric processes drive polar motion, i.e. fluctuations in both the pole position relative to the earth's crust and in the equatorial components of the angular momentum of the solid earth. Reanalysis and outgoing longwave radiation datasets as well as a timeseries of pole position will be used.Broader Impacts: This research will be of interest to solid-earth geophysical scientists and satellite dynamics scientists.

在这个项目中，PI将探索驱动赤道大气角动量季节内波动的物理过程，这占赤道大气角动量方差的一半。该研究重点介绍了四个主题：山扭矩的动力学机制，改变了赤道大气的振幅和相位，比较驱动驱动季节内波动的过程相对重要性的比较，赤道内波动的关系，赤道大气动力学和背景动力学和大气相对的旋转，相对的旋转，相对范围，相对的旋转。固体大地角动量的赤道成分。重新分析和外向的长波辐射数据集以及极点位置的时间。