A11L:
Atmospheric Ice-Nucleating Particles and Ice-Cloud Formation: Field, Laboratory, and Modeling Studies I

Submit an Abstract to this Session



Session ID#: 30799

Session Description:
Ice nucleation on aerosol particles is a fundamental atmospheric process, which governs precipitation, cloud lifetimes, and climate. Despite being a basic atmospheric process, our current understanding of heterogeneous ice nucleation in the atmosphere is low. One reason for this low understanding is that ice concentrations are low (only ~1 in 105 particles in the atmosphere nucleate ice), making it challenging to identify the composition and sources of ambient ice nuclei. Furthermore, the properties needed for a surface to be efficient as an ice nucleating site are not well understood.

Contributions are invited that underpin the emission, efficiency, transformation, and fate of atmospheric ice nucleating particles. These include, but are not limited to, laboratory results using new techniques, observations from field studies that constrain ice nucleating particle concentrations, and model studies that aim at improving the representation of ice nucleation in atmospheric models or ice nucleating surfaces in computer simulations.

Primary Convener:  Gregory P Schill, Colorado State University, Fort Collins, CO, United States
Conveners:  Jessie Creamean, NOAA Earth System Research Laboratory, Physical Science Division, Boulder, CO, United States and Swarup China, Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, United States
Chairs:  Swarup China, Pacific Northwest National Laboratory, Environmental Molecular Sciences Laboratory, Richland, United States, Jessie Creamean, NOAA Earth System Research Laboratory, Physical Science Division, Boulder, CO, United States and Gregory P Schill, Colorado State University, Fort Collins, CO, United States
OSPA Liaison:  Gregory P Schill, Colorado State University, Fort Collins, CO, United States
Index Terms:

0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0320 Cloud physics and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
0365 Troposphere: composition and chemistry [ATMOSPHERIC COMPOSITION AND STRUCTURE]
3311 Clouds and aerosols [ATMOSPHERIC PROCESSES]

Abstracts Submitted to this Session:

Ice Nucleation of Soot Particles in the Cirrus Regime: Is Pore Condensation and Freezing Relevant for Soot? (Invited) (208428)
Zaminhussein A Kanji1, Fabian Mahrt2, Robert David2, Claudia Marcolli1, Ulrike Lohmann3, Jonas Fahrni4 and Dominik Brühwiler4, (1)ETH Swiss Federal Institute of Technology Zurich, Institute for Atmospheric and Climate Science, Zurich, Switzerland, (2)ETH Swiss Federal Institute of Technology Zurich, Institute of Atmospheric and Climate Sciences, Zurich, Switzerland, (3)ETH Zurich, Institute for Atmospheric and Climate Science, Zurich, Switzerland, (4)ZHAW School of Life Sciences and Facility Management, Institute of Chemistry and Biotechnology, Wädenswil, Switzerland
Comprehensive Examination of Bottom Ash, Soil Dust, and Direct Emissions and Aging of Laboratory Biomass Burning as Potential Sources of Ice Nucleating Particles (252754)
Michael Polen1, Lydia Jahl2, Leif Jahn2, Joshua Somers1 and Ryan C Sullivan2, (1)Carnegie Mellon University, Pittsburgh, PA, United States, (2)Carnegie Mellon University, Center for Atmospheric Particle Studies, Pittsburgh, PA, United States
Global simulation of ice-nucleating particles and implications for cloud radiative effects (Invited) (209355)
Ken S Carslaw1, Jesus Vergara-Temprado2, Benjamin John Murray3, Paul Field4, Daniel O'Sullivan5, Jo Browse1, Kirsty Pringle1, Karin Ardon-Dryer6, Allan K Bertram7, Susannah M Burrows8, Darius Ceburnis9, Paul J DeMott10, Ryan Mason11, Colin D. D. O'Dowd12, Matteo Rinaldi13 and Theodore W Wilson5, (1)University of Leeds, Leeds, United Kingdom, (2)University of Leeds, Institute for Climate and Atmospheric Science (ICAS), Leeds, United Kingdom, (3)Assistant Professor, Department of Chemistry and Biochemistry, Denver, CO, United States, (4)Met Office, Exeter, United Kingdom, (5)University of Leeds, School of Earth and Environment, Leeds, United Kingdom, (6)MIT, Cambridge, MA, United States, (7)The University of British Columbia, Department of Chemistry, Vancouver, BC, Canada, (8)Pacific Northwest National Laboratory, Richland, WA, United States, (9)National University of Ireland, School of Physics, Galway, Ireland, (10)Colorado State University, Department of Atmospheric Science, Fort Collins, United States, (11)University of British Columbia, chemistry, Vancouver, BC, Canada, (12)National University of Ireland, Galway, Ireland, (13)CNR Institute of Atmospheric Sciences and Climate, Bologna, Italy
A Theory of Heterogeneous Ice Nucleation in the Immersion Mode (240230)
Donifan Barahona, NASA Goddard Space Flight Center, Global Modeling and Assimilation Office, Greenbelt, MD, United States
Enhanced concentrations of ice nucleating particles in Svalbard during summer: Possible linkage with local dust emissions (216371)
Yutaka Tobo1, Kouji Adachi2, Naoko Nagatsuka3, Paul J DeMott4, Thomas Christopher James Hill4, Sho Ohata5, Yutaka Kondo6 and Makoto Koike7, (1)National Institute of Polar Research, Tachikawa, Japan, (2)Meteorological Research Institute, Ibaraki, Japan, (3)National Institute of Polar Research, Tokyo, Japan, (4)Colorado State University, Department of Atmospheric Science, Fort Collins, United States, (5)University of Tokyo, Tokyo, Japan, (6)NIPR National Institute of Polar Research, Tokyo, Japan, (7)The University of Tokyo, Tokyo, Japan
CCN and IN concentration measurements during the Antarctic Circumnavigation Expedition (231489)
Frank Stratmann1, Silvia Henning1, Mareike Löffler1, Andre Welti1, Markus Hartmann2, Heini Wernli3, Andrea Baccarini4 and Julia Schmale5, (1)Leibniz Institute for Tropospheric Research, Leipzig, Germany, (2)Leibniz Institute for Tropospheric Research, Cloud group, ExAWoMp, Leipzig, Germany, (3)ETH, Institute for Atmospheric and Climate Science, Zürich, Switzerland, (4)Paul Scherrer Institute, Villigen, Switzerland, (5)Paul Scherrer Institute, Laboratory of Atmospheric Chemistry, Villingen, Switzerland

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