Concentration of particles larger than 2.5 nm collected during the Arctic Ocean 2018 expedition
Andrea Baccarini, Julia Schmale, Josef Dommen
The concentration of particles larger than 2.5 nm was measured with an ultrafine condensation particle counter (UCPC). The concentration was corrected for diffusional losses in the inlet based on the neutral cluster and air ion spectrometer (NAIS) size distribution.
The concentration and temporal dynamics of small particles is fundamental to characterize the first step of new particle formation (NPF) and growth. Newly formed particles can grow to larger sizes where they act as cloud condensation nuclei, directly affecting the Earth radiative budget and cloud properties.
Measurements were performed on the 4th deck of icebreaker Oden during August and September 2018 along the track of the expedition. The concentration is reported as particle per cubic centimeter in 60 seconds average.
AtmosphereAerosolsAerosol physical propertiesAerosolsAO2018Arctic OceanIcebreaker OdenAtmosphereArctic Ocean 2018 Atmospheric ScienceAtmospheric ChemistryAtmospheric PhysicsCloudsAerosol ScienceMicrobiology-Ocean-Cloud-Coupling in the High ArcticMOCCHAHigh ArcticNorth PoleAerosol-Cloud-Interaction 2018Ultrafine condensation particle counterUCPCUltrafine particlesNew particle formationCPC3776
Download dataName
Version
Citation
References
Baccarini A, Karlsson L, Dommen J, Duplessis P, Vüllers J, Brooks IM, Saiz-Lopez A, Salter M, Tjernström M, Baltensperger U, Zieger P, Schmale J (2020) Frequent new particle formation over the high Arctic pack ice by enhanced iodine emissions. Nature Communications 11:4924. https://doi.org/10.1038/s41467-020-18551-0
Kangasluoma J, Attoui M (2019) Review of sub-3 nm condensation particle counters, calibrations, and cluster generation methods. Aerosol Science and Technology 53:11. https://doi.org/10.1080/02786826.2019.1654084
Data description
Raw data were collected at 1 Hz frequency and then averaged for 60 s in order to improve the signal to noise ratio. The datetime is reported in the UTC timezone as yyyy-mm-dd HH:MM:SS.
Data are reported as particle number concentration per cubic centimeter. The nominal particle diameter cut-off corresponding to a 50% detection efficiency of the UCPC is reported to be equal to 2.5 nm; we did not characterize the transmission efficiency directly. The instrument was operated in high flow mode (1.5 lpm) to reduce diffusional losses.
We used an Hampel type filter to remove outliers and spikes related with short-term instrument malfunctioning (e.g. flow variations). 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 UCPC model 3776 manufactured by TSI was used. A description of the instrument is provided by Kangasluoma et al. (2019).
Comments
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 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. 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).
Project
Arctic Ocean 2018. This work was supported by the Swiss National Science Foundation (grant no. 200021_169090), the Swiss Polar Institute, the BNP Paribas Swiss Foundation (Polar Access Fund 2018), the Knut-and-Alice-Wallenberg Foundation within the ACAS project (Arctic Climate Across Scales, project no. 2016.0024), the Bolin Centre for Climate Research (RA2), the Swedish Research Council (project no. 2018-05045 and project no. 2016-05100).
Publisher
Bolin Centre Database
License
First name
Julia
Last name or organisation
Schmale
Email address
Address
Extreme Environments Research Laboratory EPFL Valais Wallis
Postal code
CH-1951
City
Sion
Country
Switzerland
GCMD science keyword
Earth science > Atmosphere
GCMD location
Ocean > Arctic Ocean
Dataset language
English
Begin date
2018-08-01
End date
2018-09-19