Frozen fraction of heated INP samples from Princess Elisabeth station, Antarctica, measured with the Ice Nucleating Droplet Array@en

Ice nucleating particles (INPs) are important atmospheric particles influencing the formation of ice in clouds. Their sources and atmospheric concentrations currently are subject of plenty of research. The here provided data on INPs (Ice Nucleating Particles) were derived from particles collected onto filters for two separate projects: 1) Sampling during two austral summers 2020/2021 and 2021/2022, for the CLIMB project (How do aerosol-CLoud Interactions influence the surface Mass Balance in East Antarctica?) at the Belgian Princess Elisabeth station (PES), a zero emission station, installed on a mountain ridge of Utsteinen Nunatak. 2) Sampling during a field campaign during PI-ICE (Polar atmosphere ice-ocean Interactions: Impact on Climate and Ecology) west of and on the northern Antarctic Peninsula in January until March 2019. Filters were analyzed at the TROPOS ice-lab in Germany, using well established off-line techniques. Detailed information on sampling and data evaluation are given in the abovementioned publication which this data-set accompanies. Measured frozen fractions are provided for samples, field blinds and heated samples, INP concentrations are provided for samples both with and without subtracting the background.冰核粒子（Ice nucleating particles, INPs）是影响云层冰晶形成的关键大气颗粒物。当前，其来源与大气浓度是国际学界广泛研究的热点方向。本次公开的冰核粒子（INPs）数据集，源自两项独立研究项目中采集于滤膜的颗粒物样本：1) 2020/2021与2021/2022两个南极夏季，在位于Utsteinen Nunatak山脊的比利时伊丽莎白公主站（Princess Elisabeth Station, PES）开展的CLIMB项目采样——该项目全称为"气溶胶-云相互作用如何影响东南极地表质量平衡"，此站点为零排放观测站。2) 2019年1月至3月，在南极半岛西侧及北部区域开展的PI-ICE项目野外采样——该项目全称为"极地大气-冰-海洋相互作用：对气候与生态的影响"。所有滤膜样本均在德国TROPOS冰实验室采用成熟的离线分析技术完成检测。关于采样流程与数据评估的详细细节，详见本数据集配套的上述已发表文献。本次数据集提供了常规样本、野外空白对照样本与加热样本的冻结率测定结果，同时提供了扣除背景与未扣除背景两种情况下的冰核粒子浓度数据。