Research Data Leeds Repository

Citation

Porter, Grace C. E. and Sikora, Sebastien N. F. and Adams, Michael P. and Proske, Ulrike and Harrison, Alexander D. and Tarn, Mark D. and Brooks, Ian M. and Murray, Benjamin J. (2020) Data for ‘Resolving the size of ice-nucleating particles with a balloon deployable aerosol sampler: the SHARK’. University of Leeds. [Dataset] https://doi.org/10.5518/744

Dataset description

Ice-nucleating particles (INPs) affect cloud development, lifetime and radiative properties, hence it is important to know the abundance of INPs throughout the atmosphere. A critical factor in determining the lifetime and transport of INPs is their size, however very little size-resolved atmospheric INP concentration information exists. This is especially so in the free troposphere. Here we present the development and application of a radio-controlled payload capable of collecting size-resolved aerosol from a tethered balloon for the primary purpose of offline INP analysis. This payload, known as the SHARK (Selective Height Aerosol Research Kit), consists of two complementary cascade impactors for aerosol size-segregation from 0.25 to 10 µm, with an after-filter and top stage to collect particles below and above this range at flow rates up to 100 L min-1. The SHARK also contains an optical particle counter to quantify aerosol size distribution between 0.38 and 10 µm, and a radiosonde for the measurement of temperature, pressure, GPS altitude, and relative humidity. This is all housed within a weatherproof box, can be run from batteries for up to 11 h and has a total weight of 9 kg. The radio control and live data link with the radiosonde allow the user to start and stop sampling depending on meteorological conditions and height, which can, for example, allow the user to avoid sampling in very humid or cloudy air, even when the SHARK is out of sight. While the collected aerosol could, in principle, be studied with an array of analytical techniques, this study demonstrates that the collected aerosol can be analysed with an off-line droplet freezing instrument to determine size-resolved INP concentrations, activated fractions and active site densities, producing similar results to those obtained using a standard PM10 aerosol sampler when summed over the appropriate size range. Test data is presented from four contrasting locations having very different size resolved INP spectra: Hyytiälä (Southern Finland), Leeds (Northern England), Longyearbyen (Svalbard), and Cardington (Southern England).

Keywords:	Ice-nucleating particles (INPs), Atmospheric sampling, Cascade impactors, Impactors, OPC, Balloon
Subjects:	F000 - Physical sciences > F300 - Physics > F330 - Environmental physics > F331 - Atmospheric physics
Divisions:	Faculty of Engineering and Physical Sciences > School of Physics and Astronomy Faculty of Environment > School of Earth and Environment
Related resources:	Location Type https://doi.org/10.5194/amt-2019-457 Publication https://eprints.whiterose.ac.uk/161564/ Publication https://etheses.whiterose.ac.uk/29546/ Ethesis
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	13 May 2020 08:30
URI:	https://archive.researchdata.leeds.ac.uk/id/eprint/671
Additional details Additional details Creators or authors: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Porter, Grace C. E. https://orcid.org/0000-0001-8027-6549 University of Leeds https://ror.org/024mrxd33 ror Sikora, Sebastien N. F. https://orcid.org/0000-0002-8560-8837 University of Leeds https://ror.org/024mrxd33 ror Adams, Michael P. https://orcid.org/0000-0002-9555-1264 University of Leeds https://ror.org/024mrxd33 ror Proske, Ulrike https://orcid.org/0000-0002-3153-7228 Goethe University Frankfurt https://ror.org/04cvxnb49 ror Harrison, Alexander D. https://orcid.org/0000-0003-1522-0391 University of Leeds https://ror.org/024mrxd33 ror Tarn, Mark D. https://orcid.org/0000-0001-5827-4125 University of Leeds https://ror.org/024mrxd33 ror Brooks, Ian M. https://orcid.org/0000-0002-5051-1322 University of Leeds https://ror.org/024mrxd33 ror Murray, Benjamin J. https://orcid.org/0000-0002-8198-8131 University of Leeds https://ror.org/024mrxd33 ror Type of data: Dataset Research funders: European Research Council, Natural Environment Research Council Grant numbers: ERC: 648661 MarineIce, NERC: NE/M010473/1 Publication date: 2020 Resource language: English Metadata language: English Publisher: University of Leeds Contact email: ed11gcep@leeds.ac.uk Last Modified: 19 Dec 2024 16:08

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Documentation

Zip file listing [1kB] Zip file listing [1kB] Zip file listing [1kB] Security: Anyone File name: Datasets_for_SHARK_Figures.zip.manifest.txt Content type: Documentation Mime-Type: text/plain License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 1kB

Data

Datasets for SHARK Figures [174kB] Datasets for SHARK Figures [174kB] Datasets for SHARK Figures [174kB] Security: Anyone File name: Datasets_for_SHARK_Figures.zip Content type: Data Description: 18 csv files - see manifest Mime-Type: application/zip License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 174kB