Description:

Abstracts are sought on observations and modeling of convective effects on atmospheric composition for both trace gases and aerosols. Convective clouds are responsible for a wide variety of effects on atmospheric composition from the lower troposphere to the upper troposphere and into the lower stratosphere.  Fair-weather shallow cumulus clouds play a role in venting boundary layer pollution to a layer immediately above the PBL.  Deep convection transports and detrains boundary layer constituents into the upper troposphere, with the deepest clouds having overshooting cloud tops that detrain into the UTLS region. Soluble trace gases and aerosols are scavenged to some degree by precipitation, which can depend on the cloud physics processes including the retention of soluble trace gases in freezing drops.  Aqueous chemical reactions occur within the hydrometeors, and the clouds substantially perturb photolysis rates.  Lightning flashes produce NO, which quickly comes into equilibrium with NO₂, and the resulting NO_x is detrained affecting chemical transformations.  In these cloud outflow plumes, significant ozone production and new particle formation can be found. Abstracts on these processes and other topics on convective effects on trace gases and aerosols are welcome.  Joint sessions with the 13^th Symposium on Aerosol-Cloud-Climate Interactions and the 10^th Conference on the Meteorological Applications of Lightning Data are planned.