Tornado Damage Estimation Using Polarimetric Radar
Tornado Damage Estimation Using Polarimetric Radar
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使用偏振雷达估计龙卷风损失
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
A. Ryzhkov
中科院分区：
文献类型：
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作者：
D. Bodine;M. Kumjian;R. Palmer;P. Heinselman;A. Ryzhkov
摘要本研究利用俄克拉荷马州诺曼 (KOUN) 偏振雷达数据（天气监视雷达 - 1988 多普勒雷达的偏振版本）研究了龙卷碎片特征 (TDS) 参数的用途，以估计龙卷风损害的严重程度。检查多个 TDS 参数，包括基于极化变量第 10 或 90 个百分位数的参数（最低倾斜 TDS 参数）和基于 TDS 体积覆盖范围的 TDS 参数（空间 TDS 参数）。将两项非常详细的国家气象局 (NWS) 损害调查与 TDS 参数进行了比较。 TDS 参数往往与增强型藤田量表 (EF) 评级相关。第 90 个百分点的反射率、TDS 高度和 TDS 体积在龙卷风增强期间增加，在龙卷风消散期间减少。对于 14 个龙卷风案例，将最大或最小 TDS 参数值与龙卷风的 EF 等级进行比较。对于具有较高 EF 等级的龙卷风、较高的 90% ZHH 最大值、TDS 高度...
AbstractThis study investigates the use of tornadic debris signature (TDS) parameters to estimate tornado damage severity using Norman, Oklahoma (KOUN), polarimetric radar data (polarimetric version of the Weather Surveillance Radar-1988 Doppler radar). Several TDS parameters are examined, including parameters based on the 10th or 90th percentiles of polarimetric variables (lowest tilt TDS parameters) and TDS parameters based on the TDS volumetric coverage (spatial TDS parameters). Two highly detailed National Weather Service (NWS) damage surveys are compared to TDS parameters. The TDS parameters tend to be correlated with the enhanced Fujita scale (EF) rating. The 90th percentile reflectivity, TDS height, and TDS volume increase during tornado intensification and decrease during tornado dissipation. For 14 tornado cases, the maximum or minimum TDS parameter values are compared to the tornado’s EF rating. For tornadoes with a higher EF rating, higher maximum values of the 90th percentile ZHH, TDS height, ...