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Engagement and Impact through Themed Joint Sessions

We are expecting, with your participation and involvement, these themed joint sessions will serve as a catalyst for focusing the attention of the research and operational communities (and also those who are involved in accelerating the transition of research results into operations) on the exciting possibilities related to advancing predictive capabilities across many fields and applications.
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Impacts of anthropogenic aerosols on clouds, precipitation, circulation, and severe storms.

Human activities contribute to climate change by causing changes in Earth’s atmosphere in the amounts of greenhouse gases, aerosols, and cloudiness. Our limited knowledge of the cloud-aerosol-precipitation-climate interactions is responsible for the greatest amount of uncertainty in climate change and prediction. Great progress has been made in the past few years on process-level studies, observational analysis, and parameterizations in the climate models associated with aerosol impact. Process-level modeling studies and observations indicate that deep convective clouds are often invigorated by aerosols, leading to enhanced precipitation, higher cloud top, larger anvil area, and more hail and tornado activities. However, aerosol-cloud interactions could be very different for different cloud types or regimes, which complicates their representations in the regional/global models and incurs large uncertainty in climate change. This joint session is soliciting papers in laboratory, field and modeling studies related to the impacts of aerosols that originate or altered by anthropogenic emissions, including the direct and indirect effects, the effects on different cloud types or regimes from marine stratocumulus to severe storms and tropical cyclones, and the impacts on regional and global circulations.

Host Conference(s)

5th Symposium on Aerosol-Cloud-Climate Interactions
Contact(s): Jiwen Fan, jiwen.fan@pnnl.gov

Partnering Conference(s)

19th Conference on Planned and Inadvertent Weather Modification
Contact(s): Daniel Rosenfeld, daniel.rosenfeld@huji.ac.il