KTYX NEXRAD IMPACTS V1

The KTYX NEXRAD IMPACTS dataset consists of Next Generation Weather Radar (NEXRAD) Level II surveillance data that were collected at 31 NEXRAD sites from January 1 to March 1, 2020 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. 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. There are currently 160 Weather Surveillance Radar-1988 Doppler (WSR-88D) or NEXRAD sites throughout the United States and abroad. These Level II datasets contain meteorological and dual-polarization base data quantities including: radar reflectivity, radial velocity, spectrum width, differential reflectivity, differential phase, and cross correlation ratio. The IMPACTS NEXRAD Level II data files are available in netCDF-4 format. It should be noted that this dataset will be updated in subsequent years of the IMPACTS campaign.

KTYX NEXRAD IMPACTS 数据集收录了自 2020 年 1 月 1 日至 3 月 1 日，在 31 个 NEXRAD 站点采集的下一代天气雷达（NEXRAD）二级监视数据，这些数据是在“大西洋海岸威胁性暴风雪微物理与降水研究”（IMPACTS）野外考察活动中收集的。IMPACTS 项目是一项为期三年的冬季季节部署活动，旨在研究美国大西洋海岸的暴风雪。该考察旨在：（1）提供对雪带形成、组织与演化的机制理解至关重要的观测数据；（2）探究雪粒子微物理特性及其潜在增长机制在雪带之间的变化；（3）提升降雪遥感解释与建模能力，以显著推进预测能力的提升。目前，美国及海外共有 160 个气象监视雷达-1988 多普勒（WSR-88D）或 NEXRAD 站点。这些二级数据集包含气象与双极化基础数据量，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。IMPACTS NEXRAD 二级数据文件以 netCDF-4 格式提供。值得注意的是，该数据集将在 IMPACTS 考察活动的后续年份中得到更新。