ER-2 X-band Radar (EXRAD) 3D Winds IMPACTS

The ER-2 X-band Radar (EXRAD) 3D Winds IMPACTS dataset consists of horizontal wind components, uncertainties in the horizontal wind components, and radar reflectivity collected by the EXRAD instrument onboard the NASA ER-2 aircraft. These data were 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, No deployments occurred in 2021 due to COVID-19). 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 EXRAD 3D Winds IMPACTS dataset files are available from January 25 through February 7, 2020 in netCDF-3 format.

ER-2 X波段雷达（EXRAD）三维风速IMPACTS数据集包含了由搭载于NASA ER-2飞机上的EXRAD仪器收集的水平风速分量、水平风速分量不确定性以及雷达反射率。这些数据是在针对大西洋沿岸威胁性暴风雪的微物理和降水调查（IMPACTS）野外考察期间收集的。IMPACTS是一项为期三年的冬季部署序列（2020-2023年，2021年因COVID-19疫情未进行部署），旨在（1）提供对雪带形成、组织和发展机制理解至关重要的观测；（2）研究雪粒的微物理特性和可能的增长机制在雪带中的变化；（3）提高降雪遥感解释和建模能力，以显著提升预测能力。EXRAD三维风速IMPACTS数据集的文件以netCDF-3格式从2020年1月25日到2020年2月7日可供获取。