GPM GROUND VALIDATION TWO-DIMENSIONAL VIDEO DISDROMETER (2DVD) LPVEX V1

The GPM Ground Validation Two-Dimensional Video Disdrometer (2DVD) LPVEx dataset was collected during the Light Precipitation Evaluation Experiment (LPVEx), which took place in September and October 2010 in the Gulf of Finland. The experiment aimed to characterize the ability of CloudSat, the Global Precipitation Mission (GPM) Dual-frequency Precipitation Radar (DPR), and existing/planned passive microwave (PMW) sensors, such as the GPM microwave imager (GMI), to detect light rain and evaluate their estimates of rainfall intensity in high latitude, shallow freezing level environments.The experiment leveraged in situ microphysical property measurements, coordinated remote sensing observations, and cloud resolving model simulations of high latitude precipitation systems to conduct a comprehensive evaluation of precipitation algorithms for current and future satellite platforms. The campaign will use these measurements to better understand the process of light rainfall formation at high latitudes and augment the currently limited database of light rainfall microphysical properties that form the critical assumptions at the root of satellite retrieval algorithm.

GPM 地面验证二维视频雨滴谱仪（2DVD）LPVEx 数据集是在2010年9月至10月间于芬兰湾进行的轻降水评估实验（LPVEx）期间收集的。该实验旨在描述 CloudSat、全球降水任务（GPM）双频降水雷达（DPR）以及现有/计划中的被动微波（PMW）传感器，例如 GPM 微波成像仪（GMI），在探测轻雨及评估其在高纬度、浅层冻结层环境中的降水强度估计能力。实验借助现场微物理性质测量、协调一致的遥感观测以及高纬度降水系统的云解析模型模拟，对当前及未来卫星平台的降水算法进行了全面评估。此次活动将利用这些测量结果，以深化对高纬度轻雨形成过程的理解，并丰富当前关于轻雨微物理性质的有限数据库，而这些性质是构成卫星检索算法根本假设的关键。