Studies of Mesoscale Convective Systems

中尺度对流系统研究

• 批准号: 9201786
• 负责人: Michael Biggerstaff
• 金额: $ 37.5万
• 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: 1992
• 资助国家: 美国
• 起止时间: 1992-10-15 至 1996-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9201786&HistoricalAwards=false
• 关键词: Studies; Mesoscale; Convective; Systems

Mesoscale convective systems (MCS) are collections of deep convective storms that are the parents of most beneficial rain and destructive severe weather in the Spring and Summer in the US. Improved understanding of these systems and their interactions with other scales of motion is fundamental to improve weather predictions sought after in the US Weather Research Program. Using data previously collected during the Oklahoma-Kansas Preliminary Regional Experiment for STORM Central (O-K PRE-STORM; where STORM stands for STormscale Operational and Research Meteorology), the Principal Investigator will investigate the structure and evolution of MCSs and how they affect the larger scale flow. The two major objectives are: (1) determine how the circulation structure of the stratiform regions of MCSs develops and how that may affect the structure and longevity of the parent convective system; (2) examine the structure of convective vertical drafts to determine how the area-averaged convective structure varies in space and time as a possible consequence of mesoscale gradients in the thermodynamic structure of the environment, and interaction between the convective region and internal mesoscale storm-relative flow.

中尺度对流系统（MCS）是深深的对流风暴的集合，这些暴风雨是美国春季和夏季最有益的降雨和破坏性恶劣天气的父母。 对这些系统的了解及其与其他运动尺度的相互作用的改进是基本的，这是改善美国天气研究计划中所寻求的天气预测。 使用先前在俄克拉荷马州 - 堪萨斯州 - 俄克拉荷马州 - 风暴中心的初步区域实验（O-K Pre-Storm； Storm代表Stormscale Operational and Research Mologology）的初步区域实验，首席研究者将研究MCSS的结构和演变以及它们如何影响大规模流动。 这两个主要目标是：（1）确定MCSS层状区域的循环结构如何发展，以及如何影响父对流系统的结构和寿命； （2）检查对流垂直草稿的结构，以确定面积平均的对流结构在空间和时间上如何变化，因为中尺度梯度在环境的热力学结构中的可能结果以及对流区域与内部尺度风暴风暴层流之间的相互作用。