Aerosol effects on shallow cumulus clouds in a global model
Authors
Steven J. Ghan — Pacific Northwest National Laboratory
Sungsu Park — National Center for Atmospheric Research (NCAR)
Category
Aerosol-Cloud-Radiation Interactions
Description
Almost all previous efforts to represent aerosol effects on clouds in global models have been limited to effects on stratiform clouds. We have applied a parameterization of droplet nucleation to shallow cumulus clouds represented in the Community Atmosphere Model (CAM5), including the effects of entrainment, and have expressed the cloud optical properties in terms of the diagnosed droplet number. We will compare estimates of aerosol indirect effects by CAM5 with and without this treatment.
