Session: Aerosol–Cloud Interactions in Warm Clouds. Part I (100th American Meteorological Society Annual Meeting)

Tuesday, 14 January 2020: 8:30 AM-10:00 AM

208 (Boston Convention and Exhibition Center)

Host: 12th Symposium on Aerosol - Cloud - Climate Interactions

Cochairs:

Alison Nugent, ANL, Environmental Science Division, Lemont, IL; Virendra Ghate, Argonne National Laboratory, Environmental Science Division, Lemont, IL and Hanii Takahashi, UCLA/JPL, Pasadena, CA

Many shallow cloud systems are sensitive to changes in aerosol properties, which act as cloud condensation nuclei (CCN, or giant CCN), modulate cloud microphysical properties, and can influence precipitation formation and cloud-scale dynamics. Ultimately, these controls may alter low-cloud radiative properties and climate. Aerosol particles, in turn, are impacted by shallow-cloud processes. Together, these interactions result in a coupling of the aerosol–cloud system whose coupling strength is highly variable and is poorly understood in terms of basic process understanding. Correctly representing this coupling has proven challenging to represent in large-scale models. In this session we invite presentations on all topics related to aerosol–cloud coupling in shallow clouds, including those addressing basic physical understanding, the quantification of aerosol indirect effects, cloud effects on aerosols, and the coupling between aerosols and boundary layer turbulence, cloud dynamics, and precipitation.

Papers:

8:30 AM

4.1

Aerosol First Indirect Effects: Uncertainties and Influential Factors as Inferred from Ample Measurements

Jianjun Liu, Univ. of Maryland, College Park, College Park, MD; Environmental Model and Data Optima Laboratory, Laurel, MD

8:45 AM

4.2

Two Missing Key Ingredients in Unlocking the Aerosol and Warm Cloud Interactions (Invited Presentation)

Youtong Zheng, Univ. of Maryland, College Park, College Park, MD

Recorded Presentation

9:00 AM

4.3