Collaborative Research: Atmospheric Wave and Vortex Dynamics

合作研究：大气波和涡动力学

• 批准号: 9527315
• 负责人: Lorenzo Polvani
• 金额: $ 18.95万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-03-01 至 2000-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9527315&HistoricalAwards=false
• 关键词: Collaborative; Research; Atmospheric; Wave; Vortex

9527315 Polvani This project represents an ongoing collaboration between Drs. Lorenzo Polvani of Columbia University (under this award) and Dr. Alan Plumb of MIT (ATM-9528471) concerning the dynamics of nonlinear atmospheric waves and vortices, with particular emphasis on applications to the stratosphere. In this work, a number of tools have been employed. Initially, the techniques of contour dynamics was used to study, at very high resolution, the characteristics of Rossby wave breaking under a variety of circumstances. The principal investigators then used a global, pseudospectral, shallow water model to look at the two-dimensional dynamics of nonlinear waves in the presence of nonconservative processes as well as a "contour advection" technique (a Lagrangian, high resolution, contour-following approach to depict transport in known flows. To extend these results, the PIs will examine the three-dimensional aspects of the interaction between Rossby waves and the stratospheric polar vortex using a multi-layer, pseudospectral, primitive equation model. They also will investigate various aspects of the tropospheric circulation related to Rossby wave dynamics - including atmospheric blocking and interactions between the Hadley circulation and midlatitude planetary waves. ***

9527315 Polvani 该项目代表了 Drs. 之间正在进行的合作。哥伦比亚大学的 Lorenzo Polvani（获得此奖项）和麻省理工学院的 Alan Plumb 博士 (ATM-9528471) 研究非线性大气波和涡流动力学，特别强调平流层的应用。 在这项工作中，使用了许多工具。 最初，等高线动力学技术用于以非常高的分辨率研究各种情况下罗斯贝波破碎的特征。 然后，主要研究人员使用全局伪谱浅水模型来研究存在非保守过程的非线性波的二维动力学以及“轮廓平流”技术（拉格朗日、高分辨率、轮廓跟踪方法）为了描述已知流中的传输，PI 将使用多层、伪谱、原始模型来检查罗斯贝波与平流层极地涡旋之间相互作用的三维方面。他们还将研究与罗斯贝波动力学相关的对流层环流的各个方面，包括大气阻塞以及哈德利环流和中纬度行星波之间的相互作用***。