http://bolin.su.se/data/oden-ao-2018-ccnc-1 Patrick Duplessis, Rachel Y.-W. Chang, Michael Wheeler, Richard Leaitch, Birgitta Svenningsson, Linn Karlsson, Paul Zieger Bolin Centre Database 2023 Datafile Atmosphere Aerosols CCN CCNC Fog Cloud Microphysics High Arctic Arctic Arctic Ocean Arctic Ocean 2018 AO18 AO2018 Icebreaker Oden Earth science > Atmosphere > Aerosols > Cloud condensation nuclei Rachel Chang 2023-11-30T13:55:25+00:00 English 1 The data is free of use. The authors would highly appreciate to be contacted if the is used in further publications. Data from the whole-air inlet (WAI) and residual inlet (CVI) are separated in two respective files: 1. `CCNC_WAI.csv` 1. `CCNC_CVI.csv` The raw data were collected at 1 Hz frequency and then averaged over the period of stable supersaturation. The first 5 minutes of data following the change from maximum to minimum supersaturation was excluded from the average, and the first 2 minutes following the other four saturation changes were excluded. 1. `Timestamp [UTC]` Datetime is reported in the UTC time zone. 1. `Supersaturation [%]` Supersaturation, in %. 1. `CCN concentration [cm-3]` is the CCN concentration, in unit per cm³. The measurement uncertainty is estimated to be approximately 5 % on CCN concentration, and 0.01 % on supersaturation. 1. `clean data [1], contaminated data [0]` is a flag to separate between clean data and data that are potentially influenced by the ship exhaust: 1 indicates clean data and 0 contaminated data. NaN values indicate unavailable data due to various causes specific to the instrument, including calibration, maintenance, or failure. More information on the CVI measurements can be found in Karlsson et al. (2022).