Impacts of Instrument Limitations on Estimated Raindrop Size Distribution, Radar Parameters, and Model Microphysics during Mei-Yu Season in East China
Impacts of Instrument Limitations on Estimated Raindrop Size Distribution, Radar Parameters, and Model Microphysics during Mei-Yu Season in East China
复制标题
仪器限制对华东梅雨季雨滴尺寸分布、雷达参数和模型微物理的影响
DOI：
10.1175/jtech-d-16-0225.1
复制
发表时间：
2017-05
影响因子：
2.2
通讯作者：
Zhang GF
中科院分区：
文献类型：
--
作者：
Wen Long;Zhao Kun;Zhang Guifu;Liu Su;Chen Gang;Wen Long;Zhao Kun;Zhang Guifu;Liu Su;Chen Gang;Wen Long;Zhao Kun;Zhao Kun;Zhang Guifu;Zhang Guifu;Zhao K;Zhang GF;Zhao K;Zhang GF;Zhao K;Zhao K;Zhang GF;Zhang GF
摘要通过对比使用二维视频测定仪（2DVD）、垂直指向微雨雷达（MRR）和两种激光光学OTT粒径测定仪（第一代OTT-1、第二代OTT-2）对中国东部梅雨季节雨滴粒径分布（DSDs）的测量结果，研究了测量的DSDs及其推导关系和物理参数的仪器局限性。在四种仪器中，2DVD提供了最精确的DSD和落速测量，因此其测量的降雨量与参考雨量计的一致性最好。其他仪器往往会错过更多的小雨滴（D < 1 mm），导致不准确的dds和较低的降雨量。在强降雨时，低雨量估计变得很重要。评估了仪器限制对微物理过程（如蒸发和吸积率）和对流风暴形态的影响。这是……
AbstractInstrumentation limitations on measured raindrop size distributions (DSDs) and their derived relations and physical parameters are studied through a comparison of the DSD measurements during mei-yu season in east China by four collocated instruments, that is, a two-dimensional video disdrometer (2DVD), a vertically pointing Micro Rain Radar (MRR), and two laser-optical OTT Particle Size Velocity (PARSIVEL) disdrometers (first generation: OTT-1; second generation: OTT-2). Among the four instruments, the 2DVD provides the most accurate DSD and drop velocity measurements, so its measured rainfall amount has the best agreement with the reference rain gauge. Other instruments tend to miss more small drops (D < 1 mm), leading to inaccurate DSDs and a lower rainfall amount. The low rainfall estimation becomes significant during heavy rainfall. The impacts of instrument limitations on the microphysical processes (e.g., evaporation and accretion rates) and convective storm morphology are evaluated. This is...
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