A Three-Dimensional Mesoscale Model for the Simulation of Clouds, Precipitation and Airflow

A simulation of a heavy rainfall event has been carried out over southern France using 2-D Neph data to initialize a meso-alpha model. That model was subsequently run for a period of three hours and the resulting meteorological fields were then interpolated to a smaller grid to provide balanced init...

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Bibliographic Details
Main Author: Nickerson,Everett C
Format: Report
Language:English
Subjects:
AIR FLOW
ATMOSPHERIC PRECIPITATION
CLOUDS
FRANCE
GRIDS
HIGH RATE
LIQUIDS
MATHEMATICAL MODELS
MATHEMATICAL PREDICTION
Mesoscale meteorology
Meteorology
NUMERICAL ANALYSIS
PE62101F
PHYSICS
PRECIPITATION
RAINDROPS
RAINFALL
SIMULATION
SOUTH(DIRECTION)
TERRAIN
WATER
WEATHER FORECASTING
WUAFGL667010BE
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Summary:A simulation of a heavy rainfall event has been carried out over southern France using 2-D Neph data to initialize a meso-alpha model. That model was subsequently run for a period of three hours and the resulting meteorological fields were then interpolated to a smaller grid to provide balanced initial conditions for a meso-beta model with parameterized microphysics. The meso-beta model is shown to be capable of simulating many features of an orographically forced precipitation event, including the temporal and spatial evolution of liquid water, as well as the number concentration (and hence size distribution) of raindrops. The model is especially suited for the simulation of clouds, precipitation, and airflow over complex terrain. Keywords: Numerical weather prediction; Mesoscale models; Atmospheric precipitation; NOAA; Clouds.