Parametric methodologies of cloud vertical transport for acid-deposition models
A CUmulus VENTing (CUVENT) cloud module has been developed that calculates the vertical flux of mass from the boundary layer to the cloud layer by an ensemble of nonprecipitating subgrid-scale air-mass clouds. This model will be integrated into the Regional Acid Deposition Model (RADM) and will serve to establish the effect of cloud venting for the RADM. In the initial phase of this research project, the basic cloud venting algorithm was established. CUVENT used the cloud model that was established by Ritter and Stedman (1985) to calculate the vertical transport of mass due to the ensemble of nonprecipitating air-mass convective clouds. The major effort of the first phase of this research project was to design an optimal parameterization scheme for the cloud model so that it may be incorporated in the RADM. This parameterization scheme used basic meteorological data such as pressure, temperature, humidity, surface heat flux, etc., to predict the convective cloud amount at cloud base and cloud distribution parameters. The various models that made up this scheme were developed using data obtained during the VENTEX field program.
- Research Organization:
- Research Triangle Inst., Research Triangle Park, NC (USA)
- OSTI ID:
- 7243133
- Report Number(s):
- PB-88-191374/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ACID RAIN
AIR POLLUTION
ATMOSPHERIC CIRCULATION
ATMOSPHERIC PRECIPITATIONS
CLOUDS
CONVECTION
DEPTH
DIMENSIONS
ENERGY TRANSFER
ENVIRONMENTAL TRANSPORT
FLUIDS
FORTRAN
HEAT FLUX
HEAT TRANSFER
LIQUIDS
MASS TRANSFER
MATHEMATICAL MODELS
NAPAP
POLLUTION
PROGRAMMING LANGUAGES
RAIN
SEASONAL VARIATIONS
VARIATIONS
VOLUME
WIDTH