Preprints
https://doi.org/10.5194/acp-2021-744
https://doi.org/10.5194/acp-2021-744

  08 Oct 2021

08 Oct 2021

Review status: this preprint is currently under review for the journal ACP.

Measurement report: Introduction to the HyICE-2018 campaign for measurements of ice nucleating particles in the Hyytiälä boreal forest

Zoé Brasseur1, Dimitri Castarède2, Erik S. Thomson2, Michael P. Adams3, Saskia Drossaart van Dusseldorp4,b, Paavo Heikkilä5, Kimmo Korhonen6, Janne Lampilahti1, Mikhail Paramonov4, Julia Schneider7, Franziska Vogel7, Yusheng Wu1, Jonathan P. D. Abbat8, Nina S. Atanasova9,10, Dennis H. Bamford10, Barbara Bertozzi7, Matthew Boyer1, David Brus9, Martin I. Daily3, Romy Fösig7, Ellen Gute8, Alexander D. Harrison3, Paula Hietala1, Kristina Höhler7, Zamin A. Kanji4, Jorma Keskinen5, Larissa Lacher7, Markus Lampimäki1, Janne Levula1, Antti Manninen9, Jens Nadolny7, Maija Peltola1, Grace C. E. Porter3,11, Pyry Poutanen1, Ulrike Proske3,12,a, Tobias Schorr7, Nsikanabasi Silas Umo7, János Stenszky2, Annele Virtanen6, Dmitri Moisseev1,9, Markku Kulmala1, Benjamin J. Murray3, Tuukka Petäjä1, Ottmar Möhler7, and Jonathan Duplissy1,13 Zoé Brasseur et al.
  • 1Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, Helsinki, Finland
  • 2Department of Chemistry and Molecular Biology, Atmospheric Science, University of Gothenburg, Gothenburg, Sweden
  • 3Institute for Climate and Atmospheric Science, School of Earth and Environment, University of Leeds, Leeds, UK
  • 4Institute for Atmospheric and Climate Science, ETH Zurich, Switzerland
  • 5Aerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, Tampere, Finland
  • 6Department of Applied Physics, University of Eastern Finland, Kuopio, Finland
  • 7Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany
  • 8Department of Chemistry, University of Toronto, Toronto, Ontario, Canada
  • 9Finnish Meteorological Institute, Helsinki, Finland
  • 10Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Finland
  • 11School of Physics and Astronomy, University of Leeds, Leeds, UK
  • 12Institute for Atmospheric and Environmental Sciences, Goethe University Frankfurt, Frankfurt am Main, Germany
  • 13Helsinki Institute of Physics, University of Helsinki, Helsinki, Finland
  • anow at: Institute for Atmospheric and Climate Science, ETH Zurich, Switzerland
  • bnow at: Centre for Aviation, Zurich University of Applied Sciences, Winterthur, Switzerland

Abstract. The formation of ice particles in Earth’s atmosphere strongly influences the dynamics and optical properties of clouds and their impacts on the climate system. Ice formation in clouds is often triggered heterogeneously by ice nucleating particles (INPs) that represent a very low number of particles in the atmosphere. To date, many sources of INPs, such as mineral and soil dust, have been investigated and identified in the lower latitudes. Although less is known about the sources of ice nucleation at higher latitudes, efforts have been made to identify the sources of INPs in the Arctic and boreal environments. In this study, we investigate the INP emission potential from high latitude boreal forests. We introduce the HyICE-2018 measurement campaign conducted in the boreal forest of Hyytiälä, Finland between February and June 2018. The campaign utilized the infrastructure of the SMEAR II research station with additional instrumentation for measuring INPs to quantify the concentrations and sources of INPs in the boreal environment. In this contribution, we describe the measurement infrastructure and operating procedures during HyICE-2018 and we report results from specific time periods where INP instruments were run in parallel for inter-comparison purposes. Our results show that the suite of instruments deployed during HyICE-2018 reports consistent results and therefore lays the foundation for forthcoming results to be considered holistically. In addition, we compare the INP concentration we measured to INP parameterizations, and we show a very good agreement with the Tobo et al. (2013) parameterization developed from measurements conducted in a ponderosa pine forest ecosystem in Colorado, USA.

Zoé Brasseur et al.

Status: open (until 19 Nov 2021)

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Zoé Brasseur et al.

Zoé Brasseur et al.

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Short summary
The present measurement report introduces the ice nucleation campaign organized in Hyytiälä, Finland in 2018 (HyICE-2018). We provide an overview of the campaign settings and we describe the measurement infrastructures and operating procedures used. In addition, we use results from ice nucleation instrument inter-comparison to show that the suite of these instruments deployed during the campaign reports consistent results.
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