Flash Flood–Producing Storm Properties in a Small Urban Watershed
Flash Flood–Producing Storm Properties in a Small Urban Watershed
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DOI：
10.1175/jhm-d-16-0070.1
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发表时间：
2016-10
影响因子：
3.8
通讯作者：
Brianne K. Smith;J. Smith;M. Baeck
中科院分区：
文献类型：
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作者：
Brianne K. Smith;J. Smith;M. Baeck
摘要研究了美国中大西洋地区一个具有典型山洪响应的小型城市流域产生山洪的风暴的结构和演变。通过分析2000年1月至2014年5月在Moores Run产生最大峰值流量的32次风暴，研究了拉格朗日风暴的性质。雷暴识别、跟踪、分析和临近预报（TITAN）算法用于跟踪风暴在其生命周期中的特征，重点关注风暴的大小、运动、强度和位置。首先，分析了2003年6月13日和2006年6月1日的风暴，这两个风暴在研究期间产生了最大的峰值。2003年6月13日和2006年6月1日的暴雨是由一个雷暴单体的坍塌和一个缓慢移动的低回波质心风暴造成的。对32次暴雨的分析表明，暴雨单体崩塌对峰值降雨率的产生和山洪暴发起着重要作用。风暴运动主要是西南方向-…
AbstractThe structure and evolution of flash flood–producing storms over a small urban watershed in the mid-Atlantic United States with a prototypical flash flood response is examined. Lagrangian storm properties are investigated through analyses of the 32 storms that produced the largest peak discharges in Moores Run between January 2000 and May 2014. The Thunderstorm Identification, Tracking, Analysis, and Nowcasting (TITAN) algorithm is used to track storm characteristics over their life cycle with a focus on storm size, movement, intensity, and location. First, the 13 June 2003 and 1 June 2006 storms, which produced the two largest peak discharges for the study period, are analyzed. Heavy rainfall for the 13 June 2003 and 1 June 2006 storms were caused by a collapsing thunderstorm cell and a slow-moving, low-echo centroid storm. Analyses of the 32 storms show that collapsing storm cells play an important role in peak rainfall rate production and flash flooding. Storm motion is predominantly southwest-...