Evolution and Maintenance of the 22–23 June 2003 Nocturnal Convection during BAMEX
Evolution and Maintenance of the 22–23 June 2003 Nocturnal Convection during BAMEX
复制标题
2003 年 6 月 22 日至 23 日 BAMEX 期间夜间对流的演变和维持
DOI：
10.1175/waf-d-11-00056.1
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发表时间：
2006
影响因子：
2.9
通讯作者：
M. Parker
中科院分区：
文献类型：
--
作者：
J. Billings;M. Parker
2003年6月22-23日，一个宽广的对流区在整个傍晚和夜间演变，它由一条斜线和离散的超级单体组成。这些风暴是通过分析观测和理想化的数值模拟来研究的。狂风线起源于一群超级单体，它们是在内布拉斯加州东部一条先前存在的流出边界的南北线上发起的。这些超级细胞锚定在边界上，促进了细胞的合并。单体合并和随后增强的降雨增加了地表冷池的深度和强度，这成为重新定向为一条东西向、向南传播的廓线的强迫机制。在此期间，孤立的超级细胞沿着堪萨斯州中北部的干线发展起来。这些超级单体整夜向东北方向移动。这两种对流模式是在相似的夜间环境中发展和演变的，表明有两种不同的强迫机制对其产生和发展起作用。
AbstractOn 22–23 June 2003 a broad region of convection, comprising a squall line and discrete supercells, evolved throughout the evening and nighttime hours. These storms were studied by analyzing both observations and idealized numerical simulations. The squall line originated from a group of supercells that were initiated in a north–south line along a preexisting outflow boundary in eastern Nebraska. These supercells anchored to the boundary, facilitating cell mergers. The cell mergers and subsequent enhanced rainfall increased the depth and strength of the surface cold pool, which became the forcing mechanism for reorientation into an east–west, southward-propagating squall line. While this was occurring, isolated supercells developed along the dryline in north-central Kansas. These supercells moved northeastward throughout the night. These two modes of convection developed and evolved in a similar nocturnal environment, suggesting that there were two distinct forcing mechanisms responsible for their ...