Precipitation Structure of Mesoscale Convective Systems

中尺度对流系统的降水结构

• 批准号: 8705321
• 负责人: Colleen Leary
• 金额: $ 29.57万
• 依托单位: Texas Tech University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-01 至 1991-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8705321&HistoricalAwards=false
• 关键词: Precipitation; Structure; Mesoscale; Convective; Systems

Collections of thunderstorm cells which organize themselves into stable patterns for periods of several hours or more are termed Mesoscale Convective Systems (MCS). MCSs typically affect multi-state areas and bring beneficial rain as well as most springtime severe weather (e.g. tornadoes, flash floods, hail). A major focus of the meteorological community is to improve our understanding of MCSs. The Principal Investigator will use conventional and Doppler radar data, upper air soundings and surface measurements to investigate the alterations an MCS undergoes as it changes between different structural configurations. A second goal is to study the relationship between the structure of an MCS and its precipitation characteristics. Finally, the P.I. will complete a study of tropical convective systems, including their similarities and differences with midlatitude systems. Case studies for this research will come from the NSF sponsored Preliminary Regional Experiment for STORM-Central (STORM stands for STormscale Operational and Research Meteorology) and the Global Atmospheric Research Program's Atlantic Tropical Experiment and Winter Monsoon Experiment.

在几个小时或更长时间内形成稳定模式的雷暴单体的集合称为中尺度对流系统（MCS）。mcs通常影响多州地区，并带来有益的降雨以及大多数春季恶劣天气（例如龙卷风，山洪暴发，冰雹）。气象界的一个主要焦点是提高我们对MCSs的认识。首席研究员将使用常规和多普勒雷达数据、高空探测和地面测量来调查MCS在不同结构配置之间变化时所经历的变化。第二个目标是研究MCS的结构与其降水特征之间的关系。最后，P.I.将完成对热带对流系统的研究，包括它们与中纬度系统的异同。这项研究的案例研究将来自NSF赞助的STORM- central初步区域实验（STORM代表风暴规模操作和研究气象学）和全球大气研究计划的大西洋热带实验和冬季季风实验。