Measuring ice- and liquid-water properties in mixed-phase cloud layers at the Leipzig Cloudnet station

被引:71
作者
Buehl, Johannes [1 ]
Seifert, Patric [1 ]
Myagkov, Alexander [1 ]
Ansmann, Albert [1 ]
机构
[1] Leibniz Inst Tropospher Res TROPOS, Permoserstr 15, D-04318 Leipzig, Germany
关键词
GROUND-BASED OBSERVATIONS; RADAR REFLECTIVITY; MICROWAVE RADIOMETER; LIDAR POLLY(XT); A-TRAIN; POLARIZATION; TEMPERATURE; CRYSTALS; DEPOLARIZATION; RETRIEVALS;
D O I
10.5194/acp-16-10609-2016
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
An analysis of the Cloudnet data set collected at Leipzig, Germany, with special focus on mixed-phase layered clouds is presented. We derive liquid-and ice-water content together with vertical motions of ice particles falling through cloud base. The ice mass flux is calculated by combining measurements of ice-water content and particle Doppler velocity. The efficiency of heterogeneous ice formation and its impact on cloud lifetime is estimated for different cloud-top temperatures by relating the ice mass flux and the liquid-water content at cloud top. Cloud radar measurements of polarization and Doppler velocity indicate that ice crystals formed in mixed-phase cloud layers with a geometrical thickness of less than 350 m are mostly pristine when they fall out of the cloud.
引用
收藏
页码:10609 / 10620
页数:12
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