Synoptic environments favourable for urban convection in Atlanta, Georgia
Synoptic environments favourable for urban convection in Atlanta, Georgia
复制标题
佐治亚州亚特兰大有利于城市对流的天气环境
DOI：
10.1002/joc.2344
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Walker S. Ashley
中科院分区：
文献类型：
--
作者：
M. Bentley;J. Stallins;Walker S. Ashley
对格鲁吉亚亚特兰大周围有利于城市雷暴发展的天气环境进行了研究。天气环境特征进行了评估，利用区域分析的高度，风，温度和湿度特性以及几个热力学变量。一个灵活的β聚类分析，以确定不同的分组共同的天气和热力环境。这些分组，然后进一步分析，通过生产的天气合成，雷达和闪电分布。虽然分析分层的数据天与弱天气流和海洋热带气团的特点，足够的变化内存在的天气和天气分组参数，以确定四个不同的环境中存在的城市雷暴。环境表现出适度的热力学不稳定性被发现产生最高的闪光率和最频繁的复合反射率天。皇家气象学会
An examination of synoptic environments conducive to urban thunderstorm development surrounding Atlanta, Georgia, was conducted. Synoptic environmental characteristics were evaluated utilising regional analyses of heights, winds, temperature, and moisture characteristics as well as several thermodynamic variables. A flexible beta cluster analysis was used in order to identify disparate groupings of common synoptic and thermodynamic environments. These groupings were then further analysed through the production of synoptic composites, radar, and lightning distributions. Although the analysis stratified the data by days with weak synoptic flow and maritime tropical airmass characteristics, enough variation existed within the synoptic and thermodynamically grouped parameters to identify four distinct environments present during urban thunderstorms. Environments exhibiting moderate thermodynamic instability were found to produce the highest flash rates and most frequent composite reflectivity days. Copyright © 2011 Royal Meteorological Society