NEXRAD Mosaic Midwest IMPACTS V1

The NEXRAD Mosaic Midwest 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 Midwest dataset is composed of Level II data from 11 NEXRAD sites in the midwestern 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 Midwest IMPACTS 数据集汇聚了新一代天气雷达 (NEXRAD) 的三维拼图文件，这些文件由在微物理与降水对大西洋沿岸暴风雪（IMPACTS）调查中的二级监视数据创建而成。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）。该计划旨在：（1）提供对理解雪带形成、组织与演化的关键观测；（2）探究雪粒子微物理特征及其可能的增长机制在雪带间的差异；（3）提升降雪遥感解析与建模能力，以显著推进预测技术水平。Mosaic Midwest 数据集由美国中西部11个NEXRAD站点的二级数据构成。这些数据文件以 netCDF-4 格式提供，包含包括雷达反射率、径向速度、频谱宽度、差分反射率、差分相位以及交叉相关比在内的气象和双偏振基本数据量，时间范围从2020年1月1日至2020年2月29日。值得注意的是，该数据集将在IMPACTS活动后续年份进行更新。