Session 12B Aerosol-Cloud Interactions in Mixed-Phase Clouds

Wednesday, 31 January 2024: 4:30 PM-6:00 PM
329 (The Baltimore Convention Center)
Host: 16th Symposium on Aerosol Cloud Climate Interactions
Cochairs:
Susannah M. Burrows, PNNL, Atmospheric Sciences and Global Change, Richland, WA and Chuanfeng Zhao, Beijing Normal University, Beijing

Mixed-phase clouds composed of a mixture of supercooled liquid droplets and ice crystals are found across the globe. They are the dominant cloud type during the colder three-quarters of the year in the Arctic while at lower latitudes, mixed-phase clouds occur are associated with deep convection, synoptic-scale midlatitude weather systems, and orographic clouds. Aerosols by serving both cloud condensation nuclei and ice nuclei can alter mixed-phase cloud properties, and consequently modulate the regional hydrological cycle. This session invites papers on any of the following or related subjects: (1) characterization of mixed-phase clouds using observations and modeling; (2) process-level understanding of CCN/IN impacts on mixed-phase clouds; (3) assessment of the climatic influence of aerosol–cloud interaction in mixed-phase clouds, especially over the Arctic; (4) evaluation and improvement of mixed-phase clouds in numerical models. Contributions from recent field campaigns such as MOSAiC (Multidisciplinary Drifting Observatory for the Study of Arctic Climate) are encouraged.

Papers:
4:30 PM
12B.1
4:45 PM
12B.2
The Importance of the Free Troposphere for Maintaining Arctic Low-Level Clouds
Adele Igel, Univ. of California, Davis, CA; Univ. of California, Davis, Davis, CA; and L. Sterzinger

5:00 PM
12B.3
Evolution of Cloud Droplet Number Concentrations Along Parcel Trajectories in the High Latitude Southern Ocean Summer
Gerald G. Mace, Univ. of Utah, Salt Lake City, UT; Univ. of Utah, Salt Lake City, UT; and S. Benson

5:15 PM
12B.4
Evaluation of Simulated High Latitude Mixed-Phase Clouds in E3SMv2 Using CALIPSO and ARM Observations in the Northern and Southern Hemispheres
Meng Zhang, LLNL, Houston, TX; and S. Xie, X. Liu, W. Lin, D. Zhang, J. C. Golaz, X. Zheng, K. Zhang, and Y. Zhang

5:30 PM
12B.5
Microphysical Evolution in Mixed-Phase Mid-Latitude Marine Cold-Air Outbreaks
Paquita Zuidema, Univ. of Miami, Miami, FL; and S. Chellappan, S. Kirschler, C. Voigt, A. Ackerman, B. Cairns, E. C. Crosbie, R. A. Ferrare, J. W. Hair, D. Painemal, A. J. Scarino, M. Shook, T. Shingler, F. Tornow, L. Ziemba, and A. Sorooshian

5:45 PM
12B.6
Organisation of Multiple Processes of Secondary Ice Production among Basic Cloud-Types and Cloud Age
Vaughan T. J. Phillips, Lund Univ., Lund, Sweden; Lund Univ., Lund, Sweden

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