P-3 Meteorological and Navigation Data IMPACTS

The P-3 Meteorological and Navigation Data IMPACTS dataset is a subset of airborne measurements that include GPS positioning and trajectory data, aircraft orientation, and atmospheric state measurements of temperature, pressure, water vapor, and horizontal winds. These measurements were taken from the NASA P-3 aircraft during the Investigation of Microphysics and Precipitation for Atlantic Coast-Threatening Snowstorms (IMPACTS) campaign. Funded by NASA’s Earth Venture program, IMPACTS is the first comprehensive study of East Coast snowstorms in 30 years. 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 advance prediction capabilities significantly. Data are available in ASCII-ict format from January 12, 2020, through February 28, 2023.

P-3气象与导航数据IMPACTS数据集系航空测量数据的一个子集，包含全球定位系统和轨迹数据、飞机姿态以及大气状态测量（包括温度、压力、水汽含量和水平风速）。这些数据系NASA P-3飞机在执行针对大西洋沿岸威胁性暴风雪的微物理和降水调查（IMPACTS）活动期间所采集。由NASA地球探险计划资助的IMPACTS项目，是对东海岸暴风雪进行全面研究30年来的首次。该活动旨在（1）提供对了解雪带形成、组织与演化的机制至关重要的观测；（2）考察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）改进降雪遥感解释和建模，以显著提升预测能力。数据以ASCII-ict格式自2020年1月12日起至2023年2月28日止可供获取。