The Dodge City Tornadoes on 24 May 2016: Damage Survey, Photogrammetric Analysis Combined with Mobile Polarimetric Radar Data
The Dodge City Tornadoes on 24 May 2016: Damage Survey, Photogrammetric Analysis Combined with Mobile Polarimetric Radar Data
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2016 年 5 月 24 日道奇城龙卷风：损害调查、摄影测量分析与移动偏振雷达数据相结合
DOI：
10.1175/mwr-d-18-0125.1
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发表时间：
2018
影响因子：
3.2
通讯作者：
D. Reif
中科院分区：
文献类型：
--
作者：
R. Wakimoto;Zachary B. Wienhoff;H. Bluestein;D. Reif
通过移动X波段雷达记录的极化测量与道奇城，堪萨斯州，龙卷风的照片相结合，以定量地记录了不断发展的碎屑云。在龙卷风生命周期的早期，互相关系数ρHV集中在漏斗云上。高雷达反射率的环，并被认为是在较高的碎片模拟中再现的高碎片载荷区域。在钩子回波的弱回波中，负差异反射率ZDR也集中在龙卷风上，并被普通的碎片比对当碎屑云突出并包裹着大多数漏斗云时，偏振结构发生了巨大的转变。在漏斗云之外的半径。它们可能是小麦植物中一些常见的调试对准漏斗中的阳性ZDR的结果。
Polarimetric measurements recorded by a mobile X-band radar are combined with photographs of the Dodge City, Kansas, tornado to quantitatively document the evolving debris cloud. An inner annulus or tube of high radar reflectivity encircled the tornado at low levels. A column of low cross-correlation coefficient ρhv was centered on the funnel cloud during the early stage of the tornado’s life cycle. In addition, two areas of low ρhv were located near the inner annulus of high radar reflectivity and were hypothesized to be regions of high debris loading that have been reproduced in simulations of lofted debris. Another column of low ρhv was a result of strong wind speeds that were progressively lofting small debris and dust as inflow rotated around and within the weak echo notch of the hook echo. A column of negative differential reflectivity ZDR was also centered on the tornado and was hypothesized to result from common debris alignment. The polarimetric structure undergoes a dramatic transition when the debris cloud was prominent and enveloped most of the funnel cloud. The weak echo column (WEC) began to fill at lower levels as large amounts of debris were lofted into the circulation. The axis of minimum ρhv shifted to a radius just beyond the funnel cloud. A column of positive ZDR was collocated with the funnel surrounded by negative ZDR. The negative ZDR and low ρhv within the debris cloud were likely the result of some common debris alignment from wheat stems. The positive ZDR within the funnel signified the presence of a few hydrometeors.
SimRadar：用于龙卷碎片研究的偏振雷达时间序列模拟器
影响因子：
8.2
作者：
Cheong, Boon Leng;Bodine, David J.;Fulton, Caleb J.;Torres, Sebastian M.;Maruyama, Takashi;Palmer, Robert D.
通讯作者：
Palmer, Robert D.