Profiles of Raindrop Size Distributions as Retrieved by Microrain Radars

G. Peters, B. Fischer, H. Münster, M. Clemens, A. Wagner
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引用次数: 184

Abstract

Abstract Data of vertically pointing microrain radars (MRRs), located at various sites around the Baltic Sea, were analyzed for a period of several years. From the Doppler spectra profiles of drop size distributions (DSDs) are obtained. A significant height dependence of the shape of the DSDs—and thus of the Z–R relations—is observed at high rain rates. This implies, for the considered sites, that ground-based Z–R relations lead to underestimation of high rain rates by weather radars.
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微雨雷达反演的雨滴大小分布剖面图
摘要对位于波罗的海不同地点的垂直指向微雨雷达(MRRs)数据进行了数年的分析。从多普勒谱中得到了液滴尺寸分布的谱图。在高降雨率下,观测到dsds的形状和Z-R关系具有显著的高度依赖性。这意味着,对于所考虑的站点,地面的Z-R关系导致天气雷达对高降雨率的低估。
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