Using Doppler Spectra to Separate Hydrometeor Populations and Analyze Ice Precipitation in Multilayered Mixed-Phase Clouds
Using Doppler Spectra to Separate Hydrometeor Populations and Analyze Ice Precipitation in Multilayered Mixed-Phase Clouds
复制标题
使用多普勒频谱分离水凝物群并分析多层混合相云中的冰降水
DOI：
10.1109/lgrs.2010.2052781
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发表时间：
2010
影响因子：
4.8
通讯作者：
E. Clothiaux
中科院分区：
文献类型：
--
作者：
M. Rambukkange;J. Verlinde;E. Eloranta;C. Flynn;E. Clothiaux
云雷达多普勒频谱的多模态被用来划分云粒子相和分离不同的冰人口在雷达样本量，从而方便分析个别冰雨在多层混合相云。位于阿拉斯加巴罗的35 GHz云雷达在混合相北极云实验期间收集了多普勒频谱。来自一对并列的去偏振激光雷达的数据证实了这封信中报道的两个液体云层的存在。这两个云层都嵌入了冰降水，但保持着液态。冰降水的光谱分离产生了两个不同的冰种群：在两个液体云层内的冰开始和在较高的云层中形成的冰降水。冰降速度与雷达反射率的不同阵雨的关系得出的比较表明，一个单一的关系并不能正确地代表在此期间的冰阵雨。
Multimodality of cloud radar Doppler spectra is used to partition cloud particle phases and separate distinct ice populations in the radar sample volume, thereby facilitating the analysis of individual ice showers in multilayered mixed-phase clouds. A 35-GHz cloud radar located at Barrow, Alaska, during the Mixed-Phase Arctic Cloud Experiment collected the Doppler spectra. Data from a pair of collocated depolarization lidars confirmed the presence of two liquid cloud layers reported in this letter. Both of these cloud layers were embedded in ice precipitation yet maintained their liquid. The spectral separation of the ice precipitation yielded two distinct ice populations: the ice initiated within the two liquid cloud layers and the ice precipitation formed in the higher cloud layers. The comparisons of ice fall velocity-versus-radar reflectivity relationships derived for distinct showers reveal that a single relationship does not properly represent the ice showers during this period.