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Perspectives on the Future of Ice Nucleation Research: Research Needs and Unanswered Questions Identified from Two International Workshops

Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Wien, Austria
Earth System Research Laboratory, National Oceanic and Atmospheric Administration, R/PSD, 325 Broadway, Boulder, CO 80305, USA
Cooperative Institute for Research in Environmental Sciences, University of Colorado, UCB 216, Boulder, CO 80309, USA
Paul Scherrer Institut, Laboratory of Atmospheric Chemistry, CH-5232 Villigen PSI, Switzerland
Leibniz Institute for Tropospheric Research, Permoserstr. 15, D-04318 Leipzig, Germany
University Lyon, Université Claude Bernard Lyon 1, CNRS, UMR 5256, IRCELYON, Institut de Recherches sur la Catalyse et L’environnement de Lyon, 2 avenue Albert Einstein, F-69626 Villeurbanne, France
Paul Scherrer Institut, Environmental Chemistry, CH-5232 Villigen PSI, Switzerland
Institute for Atmospheric and Climate Science, ETH Zürich, Universitätstrasse 16, CH-8092 Zürich, Switzerland
Institute of Materials Chemistry (E165), Technische Universität Wien, Getreidemarkt 9/BC/1, A-1060 Wien, Austria
Multiphase Chemistry Department, Max Planck Institute for Chemistry, Hahn-Meitner Weg 1, D-55128 Mainz, Germany
Ocean Lab, Fishguard, Pembrokeshire SA65 9HH UK
Institut für Allgemeine, Anorganische und Theoretische Chemie, Centrum für Chemie und Biomedizin, Innrain 80-82, Innsbruck, Austria
Environmental Geosciences, Department of Environmental Sciences, University of Basel, Bernoullistrasse 30, CH-4056 Basel, Switzerland
Department of Plant Pathology, Physiology, and Weed Science, Virginia Tech, 420 Ag Quad Lane, Latham 413, Blacksburg, VA 24060-0390, USA
Authors to whom correspondence should be addressed.
Atmosphere 2017, 8(8), 138;
Received: 20 June 2017 / Revised: 19 July 2017 / Accepted: 20 July 2017 / Published: 29 July 2017
(This article belongs to the Special Issue Atmospheric Aerosol Composition and its Impact on Clouds)
PDF [8356 KB, uploaded 21 August 2017]


There has been increasing interest in ice nucleation research in the last decade. To identify important gaps in our knowledge of ice nucleation processes and their impacts, two international workshops on ice nucleation were held in Vienna, Austria in 2015 and 2016. Experts from these workshops identified the following research needs: (1) uncovering the molecular identity of active sites for ice nucleation; (2) the importance of modeling for the understanding of heterogeneous ice nucleation; (3) identifying and quantifying contributions of biological ice nuclei from natural and managed environments; (4) examining the role of aging in ice nuclei; (5) conducting targeted sampling campaigns in clouds; and (6) designing lab and field experiments to increase our understanding of the role of ice-nucleating particles in the atmosphere. Interdisciplinary teams of scientists should work together to establish and maintain a common, unified language for ice nucleation research. A number of commercial applications benefit from ice nucleation research, including the production of artificial snow, the freezing and preservation of water-containing food products, and the potential modulation of weather. Additional work is needed to increase our understanding of ice nucleation processes and potential impacts on precipitation, water availability, climate change, crop health, and feedback cycles. View Full-Text
Keywords: water; ice nucleation; precipitation; INP; IN; INM; crystal; cloud glaciation; nucleation sites; aging water; ice nucleation; precipitation; INP; IN; INM; crystal; cloud glaciation; nucleation sites; aging

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Coluzza, I.; Creamean, J.; Rossi, M.J.; Wex, H.; Alpert, P.A.; Bianco, V.; Boose, Y.; Dellago, C.; Felgitsch, L.; Fröhlich-Nowoisky, J.; Herrmann, H.; Jungblut, S.; Kanji, Z.A.; Menzl, G.; Moffett, B.; Moritz, C.; Mutzel, A.; Pöschl, U.; Schauperl, M.; Scheel, J.; Stopelli, E.; Stratmann, F.; Grothe, H.; Schmale, D.G. Perspectives on the Future of Ice Nucleation Research: Research Needs and Unanswered Questions Identified from Two International Workshops. Atmosphere 2017, 8, 138.

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