Aerosol-Cloud-Drizzle-Turbulence Interactions in Boundary Layer Clouds.

摘要

The long term-goal of this project is to provide an improved description and understanding of the effects of aerosol-cloud interactions and drizzle and entrainment processes in boundary layer clouds for the purpose of developing, improving, and evaluating cloud and boundary layer representations in LES, mesoscale and large-scale forecast models. The scientific objectives are to: (1) document the structure and characteristics of entrainment circulations in marine stratocumulus and fair-weather-cumuli; (2) characterize the vertical distribution of drizzle and how it relates to cloud and mesoscale circulations; (3) investigate the relative role of cloud thickness, cloud turbulence intensity, and aerosols on precipitation production; (4) study the processing of aerosols by cloud processes; (5) explore mass, moisture, and aerosol transports across interfacial regions at cloud base and at the capping inversion, and (6) examine the role of GCCN and cloud electrification on the observed rapid production of precipitation in marine boundary layer clouds.