NEXRAD Mosaic East IMPACTS V1

The NEXRAD Mosaic East IMPACTS dataset consists of Next Generation Weather Radar (NEXRAD) 3D mosaic files created from Level II surveillance data gathered during 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 Mosaic East dataset is composed of Level II data from 19 NEXRAD sites in the eastern U.S.. These data files are available in netCDF-4 format and contain meteorological and dual-polarization base data quantities including radar reflectivity, radial velocity, spectrum width, differential reflectivity, differential phase, and cross correlation ratio from January 1 through February 29, 2020. It should be noted that this dataset will be updated in subsequent years of the IMPACTS campaign.

NEXRAD mosaic east IMPACTS 数据集汇聚了次世代天气雷达（NEXRAD）的3D镶嵌文件，这些文件由在“探究微物理与降水的北大西洋沿岸暴风雪影响”（IMPACTS）现场活动中收集的二级监视数据生成。IMPACTS是一项为期三年的冬季部署序列，旨在研究美国大西洋沿岸的暴风雪（2020-2023年）。该活动旨在（1）提供对理解雪带形成、组织及演化的关键观测；（2）审视雪粒子的微物理特性及其可能增长机制在雪带中的变化；（3）提升降雪远程感知的解读与建模，以显著推进预测能力。Mosaic East 数据集由美国东部19个NEXRAD站点的二级数据构成。这些数据文件以netCDF-4格式提供，包含从2020年1月1日至2020年2月29日的气象和双极化基础数据量，包括雷达反射率、径向速度、谱宽、差分反射率、差分相位和交叉相关比。值得注意的是，该数据集将在IMPACTS活动的后续年份中得到更新。