10th Conference on Mountain Meteorology and MAP Meeting 2002


A linear time-delay model for orographic precipitation

Ronald B. Smith, Yale University, New Haven, CT

Abstract: A simple advection model is proposed for the prediction of precipitation patterns in complex terrain with arbitrary wind direction. The model includes the time delays associated with the conversion of cloud water to hydrometeors and the gravitational fallout of hydrometeors. The solution is evaluated using a Fast Fourier Transform. The model is tested against raingauge data from the central Alps and radar data from the Lago Maggiore area of northwestern Italy, for the heavy rainfall event on September 20, 1999.

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Poster Session 2, Orographic Precipitation/Operational and Numerical Weather Prediction (with Coffee Break)
Wednesday, 19 June 2002, 9:15 AM-11:00 AM

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