Coarse-mode particle number size distribution data collected during the Arctic Ocean 2018 expedition
Paul Zieger, Linn Karlsson
Aerosol particle number size distributions in the size range 0.15 – 10 micrometre were measured with a white-light aerosol spectrometer (WELAS) with a Promo 2000H system (Palas GmbH, Germany). Measurements were performed onboard Swedish icebreaker Oden during August and September 2018 along the track of the Arctic Ocean 2018 expedition in the central Arctic Ocean.
Atmospheric aerosol particles affect climate by scattering and absorbing solar radiation and by modifying cloud properties. The particle size distribution is an important parameter that determines for example the atmospheric residence time, the optical properties, and the interaction with atmospheric water (cloud activation).
The WELAS was installed behind a whole-air inlet located on the 4th deck of I/B Oden, where air was continuously sampled.
AtmosphereAerosolsAerosol physical propertiesCoarse mode particlesParticle size distributionAerosolsArcticArctic OceanArctic Ocean 2018AO2018AO18MOCCHAIcebreaker Oden
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References
Siegel K, Karlsson L, Zieger P, Baccarini A, Schmale J, Lawler M, Salter M, Leck C, Ekman AML, Riipinen I, Mohr C (2021) Insights into the molecular composition of semi-volatile aerosols in the summertime central Arctic Ocean using FIGAERO-CIMS. Environmental Science: Atmospheres 1:161 – 175. https://doi.org/10.1039/D0EA00023J
Karlsson L, Baccarini A, Duplessis P, Baumgardner D, Brooks I, Chang R, Dada L, Dällenbach K, Krejci R, Leaitch R, Leck C, Salter ME, Wernli H, Wheeler MJ, Schmale J, Zieger P (2021) On the origin and properties of cloud-forming particles over the central Arctic Ocean. Journal of Geophysical Research (in review).
Porter G, Adams M, Brooks I, Ickes L, Karlsson L, Leck C, Salter ME, Schmale J Siegel K, Sikora S, Tarn M, Vüllers J, Wernli H, Zieger P, Zinke J, Murray B. (2021) Highly active ice-nucleating particles at the summer North Pole. Journal of Geophysical Research (in review).
Rosati B, Wehrle G, Gysel M, Zieger P, Baltensperger U, Weingartner E (2015) The white-light humidified optical particle spectrometer (WHOPS) – a novel airborne system to characterize aerosol hygroscopicity, Atmospheric Measurement Techniques 8:921 – 939. https://doi.org/10.5194/amt-8-921-2015
Data description
The data is provided in one comma-separated values (csv) file (82.5 MB).
- Row 1: Optical diameter (m) for columns 2 – 60
- Row 2 until end at row 429843:
- Column 1: Time (UTC), month/day/year HH:MM
- Column 2 – 60: Number concentration, dN/dlogD per cubic centimetre at bin midpoint diameters.
All data is corrected for particle losses assuming a particle density of 1.5 g/cm³. The instrument was calibrated according to the manufacturer's guidelines using MonoDust 1500. Note that periods with the possible influence of ship pollution are included as reliable data and are not removed. Measurements were performed at dry conditions (RH < 30%). Please not that the WELAS counting efficiency is lower for the first diameter bins (see e.g. Rosati et al, 2015).
Comments
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.
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 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 data set.
The data creators have ORCID accounts:
Project
Arctic Ocean 2018. The observations were part of the project Aerosol-cloud interactions in the High Arctic (PI Paul Zieger).
Publisher
Bolin Centre Database
License
First name
Paul
Last name or organisation
Zieger
Email address
Address
Department of Environmental Science, Atmospheric Science Unit; Stockholm University
Postal code
SE-106 91
City
Stockholm
Country
Sweden
GCMD science keyword
Earth science > Atmosphere > Aerosols
GCMD location
Ocean > Arctic Ocean
Dataset language
English
Begin date
2018-08-01
End date
2018-09-19