Cloud Physics LiDAR (CPL) IMPACTS

The Cloud Physics LiDAR (CPL) IMPACTS dataset consists of backscatter coefficient, lidar depolarization ratio, layer top/base height, layer type, particulate extinction coefficient, ice water content, and layer/cumulative optical depth data collected from the Cloud Physics LiDAR (CPL) onboard the NASA ER-2 high-altitude research aircraft in support of the Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) field campaign. IMPACTS was a three-year sequence of winter season deployments conducted to study snowstorms over the U.S. Atlantic Coast (2020-2023). The campaign aimed to (1) Provide observations critical to understanding the mechanisms of snowband formation, organization, and evolution; (2) Examine how the microphysical characteristics and likely growth mechanisms of snow particles vary across snowbands; and (3) Improve snowfall remote sensing interpretation and modeling to significantly advance prediction capabilities. The dataset files are available in HDF-5 format from January 15, 2020, through March 2, 2023.

云物理激光雷达（CPL）IMPACTS数据集包含从搭载于美国国家航空航天局ER-2高空研究飞机上的云物理激光雷达（CPL）收集的散射系数、激光雷达去极化比、层顶/底高度、层类型、颗粒消光系数、冰水含量以及层/累积光学深度数据。该数据集旨在支持对大西洋沿岸威胁性暴风雪的微物理和降水研究（IMPACTS）野外考察项目。IMPACTS项目是一个为期三年的冬季部署序列，旨在研究2020年至2023年美国大西洋沿岸的暴风雪。该考察项目旨在：（1）提供对理解雪带形成、组织和演化的机制至关重要的观测数据；（2）探讨雪粒子的微物理特征及其可能的增长机制在雪带中的变化；（3）提升降雪遥感解释和建模能力，以显著提高预测水平。数据集文件以HDF-5格式从2020年1月15日至2023年3月2日可用。