HR: 1330h
AN: A22A-1041    [PDF]
TI: Processing and Transport of Aerosol by Mixed-phase Deep Convection and its Feedback on Cloud Microphysical Properties and Precipitation
AU: * Yin, Y
EM: yan@env.leeds.ac.uk
AU: Carslaw, K
EM: carslaw@env.leeds.ac.uk
AB: We have developed a detailed 2-D model of aerosol and gas transport in warm and mixed-phase convective clouds including a full treatment of kinetic processes controlling aerosol-cloud interaction and gas partitioning among size-resolved hydrometeors. Numerical simulations are conducted to understand how the aerosol spectra and chemical composition are modified during the cloud lifetime. Results will be presented from idealised and sensitivity experiments in which low level convective inflow air containing specified aerosol spectra is processed by the modelled convective clouds. Modification of the aerosol spectra in convective outflow by scavenging of aerosol and soluble gases, and by aqueous chemical reactions is diagnosed. The feedback of the cloud-processed aerosols on cloud microphysical properties and precipitation behaviour of the primary cloud will be discussed.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801)
DE: 0320 Cloud physics and chemistry
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting