http://bolin.su.se/data/oden-ao-2018-aerosol-cims-1 Andrea Baccarini, Julia Schmale, Josef Dommen Bolin Centre Database 2020 Datafile Atmosphere Trace gases Atmospheric gas phase data AO2018 Arctic Ocean Icebreaker Oden Atmosphere Arctic Ocean 2018 Atmospheric Science Atmospheric Chemistry Atmospheric Physics Clouds Aerosol Science Microbiology-Ocean-Cloud-Coupling in the High Arctic MOCCHA High Arctic North Pole Aerosol-Cloud-Interaction 2018 Iodic acid Sulfuric acid Methanesulfonic acid New particle formation APi-TOF Earth science > Atmosphere Julia Schmale 2020-09-23T10:00:05+00:00 English 1 Raw data were collected at 0.5 Hz frequency and then the spectra were integrated for 10 minutes in order to improve the signal to noise ratio. The datetime is reported in the UTC timezone as yyyy-mm-dd HH:MM:SS. The measurement uncertainty is estimated to be to -50%/+100%. The lower limit of detection (LOD) based on three standard deviations of the background noise was estimated to be lower than 5×10³ molecules cm⁻³; values below the LOD were replaced by LOD/√(2). The last column in the dataset is a flag to separate between clean data and data that are potentially influenced by the ship exhaust: 1 indicates clean data and 2 contaminated data. The mass spectrometer is described in Junninen et al. (2010) and the chemical ionization inlet in Jokinen et al. (2012). The instrument was calibrated after the campaign using sulfuric acid (Kürten et al. 2012) and the concentration is corrected for diffusional losses in the inlet. The ship track with latitude and longitude information can be found in the [Navigation, meteorological and surface seawater data from the Arctic Ocean 2018 expedition](https://bolin.su.se/data/ao2018-navigation) data set. The data creator ORCIDs are the following: - Andrea Baccarini: https://orcid.org/0000-0003-4614-247X - Julia Schmale: https://orcid.org/0000-0002-1048-7962 - Josef Dommen: https://orcid.org/0000-0002-0006-0009 Data were collected during the Arctic Ocean 2018 expedition on board the Swedish icebreaker (I/B) Oden, which was organized by the [Swedish Polar Research Secretariat](https://polarforskningsportalen.se/en/arctic/expeditions/arctic-ocean-2018). The observations were part of the project ‘Aerosol-cloud interactions in the High Arctic’ (PI Paul Zieger, Department of Environmental Science, Stockholm University; see [MOCCHA project website](https://www.aces.su.se/research/projects/microbiology-ocean-cloud-coupling-in-the-high-arctic-moccha/) with updates).