Parameterization of aerosol scavenging in a convective cloud model
A three-dimensional numerical cloud model (OCTET) is developed to simulate the transport, diffusion and scavenging of aerosol particles. The initial purpose of the model is to estimate the fraction of smoke particles emitted by large fires that are scavenged by precipitation immediately above the fire and the fraction that is injected into the upper troposphere and straosphere. Because large fires generate strong updrafts, the clouds penetrate above the freezing level and contain frozen hydrometeors; therefore, interactions of the aerosol with the ice phase must be included in the model. This paper is a description of the current microphysics and scavenging parameterization. 9 refs., 3 figs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA)
- Sponsoring Organization:
- DOE/DP
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6922759
- Report Number(s):
- UCRL-101998; CONF-900796--2; ON: DE90010865
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540110*
AEROSOLS
ATMOSPHERIC CHEMISTRY
CHEMISTRY
CLOUDS
COLLOIDS
DEPOSITION
DIFFUSION
DISPERSIONS
DROPLETS
DYNAMICS
EMISSION
ENVIRONMENTAL TRANSPORT
EQUATIONS
FIRES
ICE
MASS TRANSFER
MATHEMATICAL MODELS
MECHANICS
PARTICLE RESUSPENSION
PARTICLES
POLLUTANTS
PRECIPITATION SCAVENGING
RESIDUES
SEPARATION PROCESSES
SMOKES
SOLS
THREE-DIMENSIONAL CALCULATIONS