Abundance of ground-level ice-nucleating particle and aerosol properties during autumn at contrasting marine and terrestrial locations

The ambient concentration data of ice-nucleating particles was collected at two contrasting sites, one in the Southern Great Plains region of the United States with a substantial terrestrially influenced aerosol population, and one in the Eastern North Atlantic area with a primarily marine-influenced aerosol population. The 6-hour time-averaged data was collected from each site, the first from October 1 – November 15, 2019, in Oklahoma, USA, and the second from October 1, 2020 – November 30, 2020, on Graciosa Island, Azores. These datasets were collected to comprehensively understand the difference or similarity in the particle source(s) as well as aerosol-cloud interactions in the atmosphere in association with other ambient observations at these sites. For both sites, the abundance data was taken with online monitors and complementary measurements of ice-nucleating particles by means of offline droplet freezing assay. A total of 10 datasets is provided (the metadata and data matrices are separated). An individual method-oriented data abstract is available in each metadata.

本数据集收录了两处对比观测站点的冰核粒子（ice-nucleating particles）环境浓度数据：一处位于美国大平原南部区域，其气溶胶粒子群以陆地来源为主；另一处位于北大西洋东部海域，其气溶胶粒子群以海洋来源为主。两处站点均采集了6小时时间平均的观测数据：第一处站点为美国俄克拉荷马州观测场，观测时段为2019年10月1日至11月15日；第二处站点为亚速尔群岛格拉西奥萨岛，观测时段为2020年10月1日至11月30日。本数据集旨在结合两处站点的其他环境观测数据，全面解析大气中冰核粒子的来源异同以及气溶胶-云相互作用特征。两处站点的冰核粒子丰度数据均通过在线监测仪器采集，并辅以离线液滴冻结分析法（offline droplet freezing assay）开展补充测量。本次共提供10组数据集（元数据（metadata）与数据矩阵（data matrices）相互分离），每份元数据中均包含针对对应测量方法的独立数据摘要。