Tuesday, 14 January 2025: 4:45 PM
215 (New Orleans Ernest N. Morial Convention Center)
Key drivers of aerosol-cloud interactions (ACI) in marine precipitating shallow
cumulus clouds are not fully understood. In this study, we examine key drivers of ACI across scales in summertime precipitating shallow cumuli observed
during the Aerosol Cloud meTeorology Interactions oVer the western ATlantic
Experiment (ACTIVATE). We show the large-scale vertical velocity
dominates the marine cumuli development. We explore how the small-scale
particle-turbulence interactions shape the droplet size distribution, and
therefore, the precipitation rate, using large-eddy simulation with Lagrangian microphysics that enables us
to capture scales at a particle (aerosol particles and cloud droplets) level.
cumulus clouds are not fully understood. In this study, we examine key drivers of ACI across scales in summertime precipitating shallow cumuli observed
during the Aerosol Cloud meTeorology Interactions oVer the western ATlantic
Experiment (ACTIVATE). We show the large-scale vertical velocity
dominates the marine cumuli development. We explore how the small-scale
particle-turbulence interactions shape the droplet size distribution, and
therefore, the precipitation rate, using large-eddy simulation with Lagrangian microphysics that enables us
to capture scales at a particle (aerosol particles and cloud droplets) level.
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