ATom: Comprehensive Aerosol Properties, 2016-2018

This dataset contains comprehensive measurements of aerosol microphysical, chemical, and optical properties derived for both dry and ambient conditions from in situ measurements made during the four ATom campaigns. The dataset includes composition-resolved size distributions the integrated mass of sulfate, organics, nitrate, sea salt, dust, black carbon, and other compounds in coarse and fine fractions; extinction and absorption coefficients from each species at both dry and ambient conditions; asymmetry parameters; Angstrom exponents; and fitted lognormal functions to describe the size distribution. Optical parameters are calculated for 10 wavelengths from the near UV to the near IR, and size distributions range from 3 nm to 50 um in diameter. One file contains these data at 1-minute time intervals. Another file contains a subset of these data averaged into 1 km vertical bins for each vertical profile the aircraft made, as well as composition-resolved integrated aerosol optical depth derived from each profile. The concentration of cloud condensation nuclei is calculated for 5 supersaturations

本数据集包含了对气溶胶微观物理、化学和光学性质的全面测量，这些测量是在四项ATom任务期间通过现场测量获得的，涵盖了干燥和自然环境下的数据。数据集内容丰富，包括对粗细颗粒物中硫酸盐、有机物、硝酸盐、海盐、尘埃、炭黑及其他化合物组成的分辨化尺寸分布；在干燥和自然环境条件下，各物种的消光和吸收系数；不对称参数；安格斯特朗指数；以及用于描述尺寸分布的对数正态函数拟合。光学参数计算涵盖了从近紫外到近红外范围内的10个波长，尺寸分布直径范围在3纳米至50微米之间。一个文件以每分钟一次的时间间隔包含了这些数据。另一个文件则包含了这些数据的子集，这些数据被平均到每条垂直剖面1公里的垂直间隔中，以及从每个剖面中得出的组成分辨化的气溶胶光学厚度。此外，计算了5个过饱和度下的云凝结核浓度。