Synoptic environments favourable for urban convection in Atlanta, Georgia

被引：25

作者：

Bentley, Mace L. ^{[1
]}

Stallins, J. Anthony ^{[2
]}

Ashley, Walker S. ^{[1
]}

机构：

[1] No Illinois Univ, Dept Geog, De Kalb, IL 60115 USA

[2] Florida State Univ, Dept Geog, Tallahassee, FL 32306 USA

来源：

INTERNATIONAL JOURNAL OF CLIMATOLOGY | 2012年 / 32卷 / 08期

基金：

美国国家科学基金会;

关键词：

urban; thunderstorm; climatology; PRECIPITATION; CLIMATOLOGY; THUNDERSTORMS; AEROSOLS; CLOUDS;

D O I：

10.1002/joc.2344

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

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 (C) 2011 Royal Meteorological Society

引用

页码：1287 / 1294

页数：8

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