Session 4 Aerosol–Cloud Interactions in High Latitudes

Tuesday, 9 January 2018: 10:30 AM-12:00 PM
Room 12A (ACC) (Austin, Texas)
Host: 10th Symposium on Aerosol-Cloud-Climate Interactions
Yuan Wang, California Institute of Technology, Pasadena, CA and Chuanfeng Zhao, Beijing Normal Univ., College of Global Change and Earth System Science, Beijing

Climate and environmental conditions in the polar regions are undergoing drastic changes. Recent in situ and space-borne measurements revealed frequent Arctic haze formation from local sources (e.g., shipping, wild fires, industrial activities, and residential combustion) or transported from mid-latitude regions, which calls for a quantitative assessment of impacts of anthropogenic aerosols on the Arctic atmosphere and cryosphere. Meanwhile, natural aerosols from marine biosphere, biomass smoke, and volcano are also closely linked to the polar cloud and climate changes. This session solicits papers addressing observations and modeling of sources and transport of aerosols in the high latitudes, aerosol effects on the mixed phase and ice clouds, aerosol snow-albedo effects, cloud–radiation–sea ice interactions, the role of aerosols in the sea ice and land ice melting, etc.

10:30 AM
Impacts of Aerosols from Biomass Burning and Anthropogenic Pollution Sources on Low-Level Arctic Clouds
Timothy J. Garrett, Univ. of Utah, Salt Lake City, UT; and Q. Coopman, J. Riedi, and D. Finch
10:45 AM
Observational Studies of Aerosol–Cloud Interactions along the North Slope of Alaska (Invited Presentation)
Gijs de Boer, Univ. of Colorado, Boulder, CO; and M. Maahn, M. Norgren, J. M. Creamean, M. Shupe, F. Mei, G. Feingold, and G. M. McFarquhar
11:15 AM
The Influence of Local and Long-Range Transported Aerosol Particles on Arctic Mixed-Phase Clouds
Luisa Ickes, Stockholm Univ., Stockholm, Sweden; and C. Hoose and A. M. L. Ekman

11:30 AM
Boundary Layer Aerosol Sources and Cloud Interactions in the Summertime Remote Arctic
Adele L. Igel, Univ. of California, Davis, CA; and A. Ekman, C. Leck, M. Tjernstrom, J. Savre, and J. Sedlar
11:45 AM
Long-Term in-Situ Observations of Aerosol–Cloud Interactions in Northern Finland
Heikki Lihavainen, Finnish Meteorological Institute, Helsinki, Finland; and N. Kivekäs, E. Asmi, D. Brus, K. Doulgeris, M. Komppula, and Y. Viisanen

- Indicates paper has been withdrawn from meeting
- Indicates an Award Winner