Equivalent black carbon concentration measured with an aethalometer AE33 during the Arctic Ocean 2018 expedition

http://bolin.su.se/data/oden-ao-2018-aerosol-ebc-ae33-1 Benjamin Heutte, Andrea Baccarini, Paul Zieger, Julia Schmale Equivalent black carbon concentration measured with an aethalometer AE33 during the Arctic Ocean 2018 expedition Bolin Centre Database 2024 Datafile Atmosphere Aerosols Arctic Black carbon AO18 MOCCHA Icebreaker Oden Central arctic ocean Aethalometer Earth science > Atmosphere > Aerosols Julia Schmale 2024-02-19T08:48:47+00:00 English 1 The data is provided in one comma-separated values (.csv) file (185 KB). Columns: - `Date/Time_(UTC)`: Date and time (DD-mm-YYYY HH:MM:SS) in UTC - `eBC (ng/m3)`: eBC mass concentrations in units of ng/m³ - `Pollution_flag_(1=polluted)`: Pollution flag to identify periods influenced by the local ship pollution. 1 corresponds to polluted data, 0 to clean data. The equivalent black carbon measurements were collected with a commercial aethalometer ([model AE33](https://gml.noaa.gov/aftp/user/betsy/AE33_UsersManual_Rev154.pdf), Magee Scientific, Berkeley, USA). The raw dataset was first averaged to a time resolution of 1 min. Outliers of more than 3 times the median absolute deviation from an hourly moving window were removed and data were finally averaged to 10 min time resolution. We converted the [‘Mask to identify polluted periods during the Arctic Ocean 2018 expedition’](https://bolin.su.se/data/oden-ao-2018-aerosol-pollution-mask-1) from a 1 min to a 10 min time resolution, by setting the condition that if more than 1 data point is polluted in a 10 min moving window, the entire 10 minutes period is defined as polluted. This flag identifies periods which are likely influenced by the local ship pollution. Data were collected during the Arctic Ocean 2018 expedition on board the Swedish icebreaker 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.su.se/english/research/research-projects/microbiology-ocean-cloud-coupling-in-the-high-arctic-moccha) with updates). 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/oden-ao-2018-navigation-1) data set.