ATom: Ultra-High Sensitivity Aerosol Spectrometer Calibration and Performance Data

This dataset provides extensive calibration and in-flight performance data for two Ultra-High Sensitivity Aerosol Spectrometers (UHSAS) used for particle size distribution and volatility measurements during the NASA Atmospheric Tomography Mission (ATom) airborne campaign. UHSAS-1 was equipped with a compact thermodenuder operating at 300 degrees C and UHSAS-2 was operated without a thermodenuder to determine the number and volume fraction of volatile particles. Laboratory studies utilized aerosols from limonene ozonolysis (limon), atomization of ammonium sulfate (AS), and atomization of 2-diethylhexyl (dioctyl) sebacate (DOS). Data include: UHSAS detection efficiency, sizing calibration, performance at a range of pressures and at a range of thermodenuder temperatures, comparison of UHSAS-2 and condensation particle counter (CPC) particle number concentrations, comparisons of UHSAS-1 and UHSAS-2 for dry particle number concentration, surface area and volume collected onboard of a NASA DC-8 aircraft during August 2016, and dry aerosol size distributions for thermodenuded and non-thermodenuded instrument collected in February 2017.

本数据集提供了在NASA大气层析任务（ATom）空中任务期间，针对两种超高灵敏度气溶胶光谱仪（UHSAS）的广泛校准和在飞行性能数据。UHSAS-1装备有工作于300摄氏度的紧凑型热解器，而UHSAS-2则在无热解器的情况下运行，以确定挥发性粒子的数量和体积分数。实验室研究使用了柠檬烯光化学氧化（柠檬烯）、硫酸铵（AS）的雾化和2-二乙基己基（二辛基）癸二酸酯（DOS）的雾化所得到的气溶胶。数据包括：UHSAS检测效率、尺寸校准、在多种压力和热解器温度范围内的性能、UHSAS-2与冷凝粒子计数器（CPC）的粒子数浓度比较、UHSAS-1与UHSAS-2对于干燥粒子数浓度、表面积和体积的比较，以及2016年8月在一架NASA DC-8飞机上收集的干燥气溶胶尺寸分布，以及2017年2月收集的热解器和非热解器仪器的干燥气溶胶尺寸分布。