Thursday, 10 January 2019: 3:30 PM-5:00 PM
North 223 (Phoenix Convention Center - West and North Buildings)
Cochairs:
Ottmar Möhler, Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research, Eggenstein-Leopoldshafen;
Eric Jensen, NASA Langley Research Center, Hampton, VA and
Bernd Kärcher, NASA, Moffett Field, CA
In Earth’s atmosphere, cold clouds exist as cirrus clouds in the upper troposphere, polar stratospheric clouds in the cold wintertime polar stratosphere, and noctilucent clouds in the summer mesopause region. The life cycles of these clouds and their roles in atmospheric chemistry and climate are largely influenced by atmospheric dynamics, but their formation very much depends on aerosol microphysical processes like deliquescence, efflorescence, homogeneous freezing, or heterogeneous ice nucleation. A detailed understanding of these processes and their representation in cloud and climate models is still lacking. This session welcomes contributions from laboratory experiments elucidating cold cloud microphysics, modeling studies developing and applying microphysics parameterizations, and in situ and remote sensing measurements investigating cold cloud microphysics and providing data for constraining model parameterizations of cold cloud microphysics.
3:30 PM
12.1
Ice Nucleating Particles and Their Impacts on Clouds over the Southern Oceans (Invited Presentation)
Paul J. DeMott, Colorado State Univ., Fort Collins, CO; and K. A. Moore, C. S. McCluskey, A. M. Rauker, T. C. J. Hill, E. J. T. Levin, C. H. Twohy, D. W. Toohey, B. Rainwater, J. L. Stith, G. M. McFarquhar, R. Marchand, C. S. Bretherton, R. Wood, S. P. Alexander, A. Protat, A. Gettelman, Y. Huang, S. T. Siems, R. Humphries, J. Ward, M. Keywood, J. Mace, and S. M. Kreidenweis
4:45 PM
12.5
First Aerosol Filter—Based Ice Nucleating Particle Measurements in Hyytiälä during the Transition Period from Winter to Summer 2018
Ottmar Möhler, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany; and J. Kaufmann, K. Höhler, B. Bertozzi, L. Lacher, T. Leisner, T. Schorr, N. Umo, F. Vogel, P. J. DeMott, T. C. J. Hill, M. Adams, A. Harrison, G. Porter, B. J. Murray, Z. Brasseur, J. Duplissy, and T. Petäjä
- Indicates paper has been withdrawn from meeting
- Indicates an Award Winner
