Advanced Vertical Atmospheric Profiling System Dropsondes (AVAPS) IMPACTS

The Advanced Vertical Atmospheric Profiling System (AVAPS) IMPACTS dataset consists of vertical atmospheric profile measurements collected by the Advanced Vertical Atmospheric Profiling System (AVAPS) dropsondes released from the NASA P-3 aircraft 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. AVAPS uses a Global Positioning System (GPS) dropsonde to measure atmospheric state parameters (temperature, humidity, wind speed/direction, pressure) and location in 3-dimensional space during the dropsonde’s descent. The AVAPS dataset files are available from January 12, 2020, through February 28, 2023, in ASCII-ict format.

高级垂直大气廓线系统（AVAPS）的IMPACTS数据集包含了在“调查大西洋沿岸威胁性暴风雪的微物理和降水”（IMPACTS）野外考察期间，由NASA P-3飞机释放的AVAPS气溶胶探空仪所收集的垂直大气廓线测量数据。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）。该考察旨在（1）提供对雪带形成、组织及演化的机制理解至关重要的观测数据；（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情况；（3）改进降雪遥感解释和建模，以显著提升预测能力。AVAPS系统采用全球定位系统（GPS）气溶胶探空仪，在探空仪下降过程中测量大气状态参数（温度、湿度、风速/风向、气压）及其在三维空间中的位置。AVAPS数据集文件自2020年1月12日起至2023年2月28日止，以ASCII-ict格式提供。