Identification of snow from GPM-DPR observations and cross validation with S-band ground radar dual polarization measurements

S. Biswas, M. Le, V. Chandrasekar
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引用次数: 2

Abstract

The Global Precipitation Measurement (GPM) mission Core Observatory is equipped with a dual-frequency precipitation radar (DPR) operating at frequency channel of 13.6 GHz (Ku-band) and 35.5 GHz (Ka-band). In this paper, GPM-DPR's simultaneous observations at these two frequencies are used to study the characteristics of vertical profile of reflectivity of snow. An algorithm to identify falling snow is considered. Its performance is also evaluated by cross validation with dual polarization measurements from ground radar.
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基于GPM-DPR观测的积雪识别及其与s波段地面雷达双偏振测量的交叉验证
全球降水测量(GPM)任务核心天文台配备了一个双频降水雷达(DPR),工作频率为13.6 GHz (ku波段)和35.5 GHz (ka波段)。本文利用GPM-DPR在这两个频率的同步观测资料,研究了积雪反射率的垂直廓线特征。提出了一种识别降雪量的算法。通过与地面雷达双偏振测量数据的交叉验证,对其性能进行了评价。
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