Incorporation of a Radiation Parameterization Scheme into the Naval Research Laboratory Limited Area Dynamical Weather Prediction Model
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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This paper describes the incorporation of the Harshvardhan et al. 1987 radiation parameterization into the Naval Research Laboratory Limited Area Dynamical Weather Prediction Model. A comparison between model runs with the radiation scheme and runs without the scheme was made to examine three mesoscale phenomena along the west coast of the United States during the period 0000 UTC 02 May 1990 - 1200 UTC 03 lay 1990 the land and sea breeze, the southerly surge and the Catalina eddy. In general the updated model with the radiation parameterization yielded a more accurate simulation of the layer temperatures, geopotential heights, cloud cover, and radiative processes as verified from synoptic, mesoscale and satellite observations. Subsequently, the updated model also forecast a more realistic diurnal evolution of the sea and land breeze, the southerly surge and the Catalina eddy.