Long-Term Morphological Changes in Simulated Supercells Following Mergers with Nascent Supercells in Directionally Varying Shear
Long-Term Morphological Changes in Simulated Supercells Following Mergers with Nascent Supercells in Directionally Varying Shear
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DOI：
10.1175/mwr-d-15-0193.1
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发表时间：
2016-01
影响因子：
3.2
通讯作者：
R. Hastings;Yvette P. Richardson
中科院分区：
文献类型：
--
作者：
R. Hastings;Yvette P. Richardson
涉及的超级电池仍然是对这项研究的严重雷暴预测。导致两次成熟度的风暴用于控制合并的相对成熟度，并在最简单的合并中开发了第二个风暴的概念模型。控制因素在结果中。
AbstractMergers involving supercells remain a challenge for severe thunderstorm forecasting. In this study, mergers between supercells and ordinary cells (e.g., cells forming in a similar environment but too young to be fully developed supercells) are investigated. A series of numerical experiments are performed using an idealized, homogenous environment supportive of cyclonically rotating, right-moving supercells. Warm bubbles are introduced at different times, resulting in two storms of different maturity; their placement is used to control the location of the merger and the relative maturity of the second storm. Simplified conceptual models for the long-term outcomes of mergers are developed. In the simplest mode of merger, outflow from the new cell cuts off inflow to the original. If the new cell’s cold pool is not sufficiently strong to cut off the inflow to the original cell, the minimum separation of the updraft maxima during the merger becomes a key controlling factor in the outcome. If it is less...