Cloud Condensation Nuclei (CCN) concentrations measured in the Swiss container during MOSAiC 2019/2020 ...

• Main Authors: Bergner, Nora, Heutte, Benjamin, Angot, Hélène, Dada, Lubna, Beck, Ivo, Quéléver, Lauriane, Jokinen, Tuija, Laurila, Tiia, Schmale, Julia
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2023
• Subjects: aerosols; Arctic aerosol; cloud condensation nuclei; MOSAiC_ATMOS; Multidisciplinary drifting Observatory for the Study of Arctic Climate MOSAiC; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.961131; https://doi.pangaea.de/10.1594/PANGAEA.961131

This dataset contains CCN concentrations at five supersaturation levels, averaged to 1 min time resolution, measured during the year-long Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition from October 2019 to September 2020. The measurements were performed in the Swiss container on the D-deck of Research Vessel Polarstern, using the model CCN-100 from Droplet Measurement Technologies (DMT, Boulder, USA). Detailed description of the measurement principle can be found in e.g. Roberts & Nenes (2005). The instrument was located behind an automated valve, which switched hourly between a total and an interstitial air inlet, with upper cutoff sizes of 40 and 1 µm respectively (Heutte et al., Submitted; Beck et al., 2022; Dada et al., 2022). The measurements were performed in 1-h cycles, with a 0.5 L/min sample flow and a 2 L/min make up flow, where the supersaturations 0.15, 0.2, 0.3, 0.5 and 1.0 % were measured. The supersaturation of 0.15 % is measured for 20 min, as ...