ER-2 X-Band Doppler Radar (EXRAD) IMPACTS

The ER-2 X-band Radar (EXRAD) IMPACTS dataset consists of radar reflectivity and Doppler velocity estimates collected by the EXRAD onboard the NASA ER-2 high-altitude research 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). 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 IMPACTS dataset files are available from January 25, 2020, through March 2, 2023, in HDF-5 format.

ER-2 X波段雷达（EXRAD）的IMPACTS数据集包含由NASA ER-2高空研究机搭载的EXRAD收集的雷达反射率和多普勒速度估计数据。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）现场行动计划期间收集的。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）。该行动计划旨在（1）提供对雪带形成、组织和发展机制至关重要的观测；（2）检验雪粒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模型，以显著推进预测能力。EXRAD IMPACTS数据集文件自2020年1月25日起至2023年3月2日止，以HDF-5格式提供。