HR: 17:05h
AN: A44B-04    [Abstracts]
TI: The Challenges of Explicitly Representing Cloud Droplet and Ice Particle Nucleation on Aerosols in CRM, NWP, and GCM Models
AU: * Cotton, W R
EM: cotton@atmos.colostate.edu
AF: Colorado State University, Dept. of Atmospheric Science, Fort Collins, CO 80523, United States
AB: In recent years we have incorporated increasingly sophisticated representations of aerosol effects on clouds and precipitation in RAMS. Our approach is to incorporate explicit aerosol activation in a bulk microphysics model that emulates a bin-resolving model. Most of our simulations have been in the context of cloud resolving simulations in which cloud-scale vertical motions, which impact droplet and ice particle nucleation, are explicitly simulated. In this talk I will briefly review our experience simulating aerosol affects on wintertime orographic clouds, Arctic stratus, deep convective clouds and even tropical cyclones. I then discuss what will be needed to incorporate a model like ours in NWP models and in climate models. Especially important to NWP is not only the engineering and physical parameterizations required, but also the infrastructure needed to predict/retrieve cloud nucleating aerosol sources, sinks, and transports.
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0320 Cloud physics and chemistry
DE: 0321 Cloud/radiation interaction
SC: Atmospheric Sciences [A]
MN: 2007 Joint Assembly