Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen 5232, Switzerland.
Experimental Aerosol &Cloud Microphysics, Leibniz Institute for Tropospheric Research, Permoserstrasse 15, Leipzig 04318, Germany.
Sci Data. 2017 Mar 14;4:170003. doi: 10.1038/sdata.2017.3.
Cloud condensation nuclei (CCN) number concentrations alongside with submicrometer particle number size distributions and particle chemical composition have been measured at atmospheric observatories of the Aerosols, Clouds, and Trace gases Research InfraStructure (ACTRIS) as well as other international sites over multiple years. Here, harmonized data records from 11 observatories are summarized, spanning 98,677 instrument hours for CCN data, 157,880 for particle number size distributions, and 70,817 for chemical composition data. The observatories represent nine different environments, e.g., Arctic, Atlantic, Pacific and Mediterranean maritime, boreal forest, or high alpine atmospheric conditions. This is a unique collection of aerosol particle properties most relevant for studying aerosol-cloud interactions which constitute the largest uncertainty in anthropogenic radiative forcing of the climate. The dataset is appropriate for comprehensive aerosol characterization (e.g., closure studies of CCN), model-measurement intercomparison and satellite retrieval method evaluation, among others. Data have been acquired and processed following international recommendations for quality assurance and have undergone multiple stages of quality assessment.
多年来，气溶胶、云、痕量气体研究基础设施 (ACTRIS) 的大气观测站以及其他国际站点一直在测量云凝结核 (CCN) 数量浓度以及亚微米颗粒数浓度分布和颗粒化学成分。在这里，总结了来自 11 个观测站的协调数据记录，涵盖了 98677 个 CCN 数据、157880 个颗粒数浓度分布数据和 70817 个化学成分数据的仪器小时数。这些观测站代表了九个不同的环境，例如北极、大西洋、太平洋和地中海海洋、北方森林或高海拔大气条件。这是一个独特的气溶胶粒子特性集合，对于研究气溶胶-云相互作用最为重要，气溶胶-云相互作用是人为辐射强迫气候的最大不确定性。该数据集适用于综合气溶胶特性描述（例如 CCN 的闭合研究）、模型测量比较和卫星检索方法评估等。数据是按照国际质量保证建议采集和处理的，并经过多个阶段的质量评估。
