A novel method for ground-based and mobile remote sensing of profiles of cloud microphysical properties using scanning radiometry supplemented by Lidar

该项目的目的是开发和应用一种新的地面被动和主动相结合的遥感方法，以反演对流云微物理参数的垂直剖面。将获得关于云微物理结构的垂直演变(从云底到顶端)以及不断增长的对流云要素开始降水的信息。对流云反射的光谱太阳辐射的辐射测量(被动)将与激光雷达数据(主动)相结合。云层侧面将由两台仪器同步(在时间和空间上)扫描。将发展一种新的反演方法，从测量结果中提取云热力学相(液态水或冰)的垂直廓线以及有效液滴和粒子半径。在微物理反演中，将通过应用三维辐射传输模式来明确考虑对流云的三维性质。该项目的成果还将作为未来机载(特别是光晕)和卫星飞行任务应用的概念验证。

Aim of the project is to develop and apply a novel, ground-based combined passive and active remote sensing method to retrieve vertical profiles of microphysical parameters of convective clouds. Information will be obtained on the vertical evolution (from cloud base to anvil) of the cloud microphysical structure and on the onset of precipitation in growing convective cloud elements. Radiance measurements of spectral solar radiation reflected by convective clouds (passive) will be combined with Lidar data (active). The cloud sides will be scanned synchronously (temporally and spatially) by both instruments. A new retrieval method will be developed to derive vertical profiles of cloud thermodynamic phase (liquid water or ice) and effective droplet and particle radius from the measurements. The threedimensional (3D) nature of convective clouds will be explicitely considered in the microphysical retrievals by applying a 3D radiative transfer model. The results of this project will also serve as a proof-of-concept for applications on future airborne (HALO, in particular) and satellite missions.