Medium-Range Synoptic Meteorology

中程天气气象学

• 批准号: 0089906
• 负责人: John Nielsen-Gammon
• 金额: $ 38.77万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-03-01 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0089906&HistoricalAwards=false
• 关键词: Medium; Range; Synoptic; Meteorology

The objectives of this study are to enhance our understanding of medium-range synoptic meteorology and to improve medium-range weather predictions. The focus is on the dynamic evolution of the upper-tropospheric weather systems such as troughs and cutoff cyclones. Theoretical wave stability and propagation analysis and potential vorticity diagnostics are applied to four different aspects of the problem: the mechanism associated with midwinter suppression of storm activity in the North Pacific; mechanisms for the formation and dissipation of coherent vortices; upper-tropospheric control on the severe storm environment; and the propagation of mobile Rossby wave packets in the upper troposphere.

本研究的目的是增进我们对中期天气气象学的认识，并改善中期天气预报。重点是对流层上层的天气系统，如槽和切断气旋的动态演变。理论波浪稳定性和传播分析以及位涡度诊断应用于问题的四个不同方面：与北太平洋隆冬风暴活动抑制有关的机制；相干涡的形成和消散机制；对流层上层对强风暴环境的控制；以及对流层上层移动罗斯比波包的传播。