ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols, Version 2

This dataset provides information on greenhouse gases and human-produced air pollution, including atmospheric concentrations of carbon dioxide (CO2), methane (CH4), tropospheric ozone (O3), and black carbon (BC) aerosols, collected during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission. This dataset includes merged data from all instruments plus additional data such as numbered profiles and distance flown. Merged data products have been created for seven different aggregation intervals (1 second, 10 seconds, and 5 instrument-specific intervals). In the case of data obtained over longer time intervals (e.g., flask data), the merge files provide (weighted) averages to match the sampling intervals. This comprehensive dataset will be used to improve the representation of chemically reactive gases and short-lived climate forcers in global models of atmospheric chemistry and climate.

本数据集收录了温室气体与人为源大气污染物的相关信息，包含美国国家航空航天局（NASA）大气层析（Atmospheric Tomography, ATom）任务机载观测航次中采集的二氧化碳（CO₂）、甲烷（CH₄）、对流层臭氧（O₃）以及黑碳（BC）气溶胶的大气浓度数据。本数据集涵盖所有仪器的合并数据，以及带编号的廓线、飞行航程等附加数据。现已针对7种不同的聚合时间间隔（1秒、10秒，以及5种仪器专属时间间隔）生成合并数据产品；针对长时间间隔获取的数据（例如钢瓶采样数据），合并文件会提供（加权）平均值以匹配采样间隔。本综合数据集将用于改进大气化学与气候全球模式中化学反应性气体和短期气候强迫因子的表征效果。