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Behavior of lightning and updrafts for severe and non-severe storms in northern Alabama.

机译:阿拉巴马州北部严重和非严重风暴的雷电上升气流行为。

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摘要

The relationship between updraft, precipitation ice, and lightning flash rate is hypothesized to be the physical connection between a lightning 'jump' signature and manifestations of severe weather. This study further examines this connection using dual-Doppler wind retrievals, dual-polarimetric radar and total lightning data. The retrieved three-dimensional wind fields were compared to total lightning flash rates and precipitation ice computed using ARMOR dual-polarimetric data. Particular attention was paid to the timing of updraft and precipitation ice pulses relative to changes in the lightning flash rate. The results from this study reveal that consistent underlying relationships exist between updraft, precipitation sized ice, and lightning flash rate. Correlation strength differed between storm types with non-severe and single cells storms performing the best overall in this study.
机译:据推测,上升气流,降水冰和雷闪率之间的关系是雷电“跳动”信号与恶劣天气表现之间的物理联系。这项研究使用双多普勒测风,双极化雷达和总闪电数据进一步研究了这种联系。将检索到的三维风场与使用ARMOR双极化数据计算的总闪电闪速和降水冰进行比较。尤其要注意相对于闪电闪速变化的上升气流和降水冰脉冲的时间。这项研究的结果表明,上升气流,降水量大小的冰和闪电爆发率之间存在一致的潜在关系。在本研究中,在非严重风暴和单细胞风暴中,整体表现最佳的相关强度有所不同。

著录项

  • 作者

    Johnson, Elise V.;

  • 作者单位

    The University of Alabama in Huntsville.;

  • 授予单位 The University of Alabama in Huntsville.;
  • 学科 Atmospheric Sciences.
  • 学位 M.S.
  • 年度 2009
  • 页码 83 p.
  • 总页数 83
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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