Mobile, Phased-Array, Doppler Radar Observations of Tornadoes at X Band
Mobile, Phased-Array, Doppler Radar Observations of Tornadoes at X Band
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X 波段龙卷风移动相控阵多普勒雷达观测
DOI：
10.1175/mwr-d-13-00101.1
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发表时间：
2012
影响因子：
3.2
通讯作者：
R. Bluth
中科院分区：
文献类型：
--
作者：
Michael M. French;H. Bluestein;I. Popstefanija;C. Baldi;R. Bluth
自2007年以来，移动的相控阵多普勒雷达，即2005年X波段相控阵移动的天气雷达（MWR-05 XP）已被用于获取超级单体和龙卷风的数据。快速更新，体积数据的龙卷风涡旋签名（TVS）与四个龙卷风被用来调查的时间-高度演变的TVS强度，位置，并通过风暴中层耗散。即使在龙卷风成熟阶段，TVS强度和位置在时间和高度上也变化很大。在一个案例中，一个与龙卷风有关的TVS在高空消散，之后不久又形成了第二个TVS，而在地面附近有一个连续的TVS。在第二个案例中，与一个长期存在的猛烈龙卷风相关的TVS与第二个TVS（可能是第二个气旋性龙卷风）合并，导致原始TVS加强。TVS耗散首先发生在1.5 km AGL高度，然后在两个案例中逐渐升高; TVS耗散最后发生在最低的1 km。
AbstractA mobile, phased-array Doppler radar, the Mobile Weather Radar, 2005 X-band, Phased Array (MWR-05XP), has been used since 2007 to obtain data in supercells and tornadoes. Rapidly updating, volumetric data of tornadic vortex signatures (TVSs) associated with four tornadoes are used to investigate the time–height evolution of TVS intensity, position, and dissipation up through storm midlevels. Both TVS intensity and position were highly variable in time and height even during tornado mature phases. In one case, a TVS associated with a tornado dissipated aloft and a second TVS formed shortly thereafter while there was one continuous TVS near the ground. In a second case, the TVS associated with a long-lived, violent tornado merged with a second TVS (likely a second cyclonic tornado) causing the original TVS to strengthen. TVS dissipation occurred first at a height of ~1.5 km AGL and then at progressively higher levels in two cases; TVS dissipation occurred last in the lowest 1 km in three cases exami...