Primary Convener:
Haruki Hirasawa, University of Washington

Convener:
Lucas McMichael, University of Washington Seattle Campus
Tianle Yuan, University of Maryland Baltimore County
Haipeng Zhang, University of Maryland Baltimore County

Early Career Convener:
Cindy Wang, Cornell University

Chair:
Haruki Hirasawa, University of Washington
Haipeng Zhang, Nanjing University
Lucas McMichael, University of Washington Seattle Campus

Aerosol-cloud interactions are responsible for substantial but uncertain radiative effects, with important implications for our understanding of recent climate changes and the effects of potential climate intervention such as marine cloud brightening, mixed phase cloud thinning, and cirrus cloud thinning. Process understanding and more credible modelling capabilities are necessary to quantify these effects. “Opportunistic” experiments created by localized aerosol perturbations allow estimates of the causal effect of aerosols on clouds. This session invites studies examining aerosol perturbations and the processes governing their distribution/composition, effects on clouds/atmosphere, and novel methods for analyzing observations such as by using machine learning. We invite observational and modelling studies across scales that examine responses to opportune events and intentional emissions, and the representation of these events in global models with aerosol and cloud parameterizations. This session seeks to connect different facets of research on aerosol perturbations to help clarify uncertainties in aerosol-cloud interactions.

Index Terms
3311 Clouds and aerosols
3323 Large eddy simulation
3365 Subgrid-scale (SGS) parameterization
1640 Remote sensing

Suggested Itineraries:
Climate Change and Global Policy
Global Impacts‚ Solutions‚ & Policies

Neighborhoods:
3. Earth Covering

Cross-Listed:
GC - Global Environmental Change