Instability of Frontal Waves and Upper Level Frontogenesis

锋波和上层锋生的不稳定性

• 批准号: 8822729
• 负责人: Carlos Mechoso
• 金额: $ 13.41万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-04-01 至 1992-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8822729&HistoricalAwards=false
• 关键词: Instability; Frontal; Waves; Upper; Level

The overall objective of this project is to better understand the dynamics of atmospheric fronts. The project focuses on two particular aspects - (1) the structure and evolution of unstable disturbances generated along fronts and (2) the interaction of frontal-scale and large scale processes in the development of fronts at upper levels of the troposphere. The latter will also include an examination of exchanges between the troposphere and stratosphere in upper level frontal zones. Both studies will employ a three- dimensional model with an isentropic coordinate system which the principal investigators developed under a previous NSF award. The model represents an important tool for improving our understanding of the basic processes responsible for atmospheric disturbances. This research will advance our basic understanding of atmospheric process and ultimately contribute to better prediction of weather and climate.

该项目的总体目标是更好地了解大气锋面的动力学。该项目侧重于两个特定方面：(1)锋面沿线产生的不稳定扰动的结构和演变；(2)对流层高层锋面发展过程中锋面尺度和大尺度过程的相互作用。后者还将包括对高层锋区对流层和平流层之间交换的研究。这两项研究都将采用一个三维模型和一个等熵坐标系，该模型是由主要研究人员在以前的国家科学基金会奖下开发的。该模式是提高我们对造成大气扰动的基本过程的理解的一个重要工具。这项研究将促进我们对大气过程的基本认识，并最终有助于更好地预测天气和气候。