Dynamical Interpretation of Conceptual Models of Frontal Structure and Circulations

额叶结构和环流概念模型的动力学解释

• 批准号: 9114743
• 负责人: Daniel Keyser
• 金额: $ 30.5万
• 依托单位: SUNY at Albany
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-02-01 至 1995-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9114743&HistoricalAwards=false
• 关键词: Dynamical; Interpretation; Conceptual; Models; Frontal

Conceptual models of frontal evolution and structure within the curved flow charactestic of extratropical disturbances have grown in number and qualitative complexity, as a result of numerous case-studies of frontal cyclones in a variety of meteorological environments. Keyser will place these models into a formalized, quantitative dynamic context. This will be approached through diagnoses of the vertical circulations, converging and diverging wind patterns, and potential vorticity fields in objectively analyzed observed mesoscale fields, and in short-term numerical forecasts using mesoscale numerical models. Distinctive features of the diagnosed fields will be compared to those implicit in the conceptual models, and to those predicted by idealized dynamical theories. In particular, frontal systems in the central U.S. will be the object of study in order to take advantage of the STORM- Fronts Experiment Systems Test (STORMFEST) to take place in February and March 1992.

由于对各种气象环境中锋面气旋的大量案例研究，锋面演变和温带扰动弯曲流特征内结构的概念模型在数量和质量上都变得越来越复杂。 Keyser 将把这些模型置于形式化、定量的动态环境中。这将通过对客观分析的中尺度观测场中的垂直环流、汇聚和发散风型以及位涡场进行诊断，以及使用中尺度数值模型进行短期数值预报来实现。诊断领域的独特特征将与概念模型中隐含的特征以及理想化动力学理论预测的特征进行比较。特别是，美国中部的锋面系统将成为研究对象，以便利用 1992 年 2 月和 3 月举行的风暴锋面实验系统测试 (STORMFEST)。