Baroclinic Wave Lifecycle and Storm Track Dynamics

斜压波生命周期和风暴轨迹动力学

• 批准号: 9510008
• 负责人: Edmund Chang
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-09-01 至 1998-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9510008&HistoricalAwards=false
• 关键词: Baroclinic; Wave; Lifecycle; Storm; Track

9510008 Chang The development and evolution of cyclones and anticyclones control, to a large extent, the weather in the mid-latitudes. These weather systems occur in preferred regions termed the storm tracks. It is important to understand the processes that can lead to the formation of these systems and their evolution. Recent observational and modelling studies have revealed that cyclones and anticyclones occur predominantly within localized wave packets. Preliminary studies suggest that the structure, evolution, and development of these systems within localized wave packets can be quite different from those suggested by traditional theories of baroclinic instability. Dr. Chang intends to explore in depth the evolution of these systems within the localized wave packets by diagnosing observational analyses from the European Centre for Medium Range Prediction and the National Center for Environmental Prediction and by conducting numerical experiments with a primitive equation model with simplified model physics. The results of this research will have important implications for medium range weather prediction (on the order of one to two weeks). *** ??

9510008张气旋的发展演变和反气旋的控制，在很大程度上影响着中纬度地区的天气。这些天气系统出现在被称为风暴路径的首选区域。了解导致这些系统形成及其演变的过程是很重要的。最近的观测和模拟研究表明，气旋和反气旋主要发生在局域波包内。初步研究表明，局域波包内这些系统的结构、演化和发展可能与传统斜压不稳定理论所提出的结构、演化和发展大不相同。张博士打算通过诊断欧洲中期预测中心和国家环境预测中心的观测分析，并通过简化模型物理的原始方程模型进行数值实验，深入探索这些系统在局部波包中的演变。这项研究的结果将对中期天气预报（大约一至两周）产生重要影响。* * * ? ?