Numerical Simulation of Orographic Enhancement of Rain with a Mesoscale Model
Open Access
- 1 June 1987
- journal article
- Published by American Meteorological Society in Journal of Climate and Applied Meteorology
- Vol. 26 (6) , 661-669
- https://doi.org/10.1175/1520-0450(1987)026<0661:nsooeo>2.0.co;2
Abstract
Orographic precipitation enhancement associated with the feeder mechanism proposed by Bergeron has been simulated using a two dimensions model based upon primitive equations including detailed parameter microphysics. A case-by-case comparison is made between model results and each of 14 well-documented precipitation episodes in southern Wales. The model reproduces the observed strong dependence of the precipitation enhancement on the low-level wind speed, as well as the weak dependence on the upwind precipitation rate. Model results also demonstrate that a satisfactory treatment of orographically enhanced precipitation requires the linking of the dynamical, thermodynamical and microphysical processes.Keywords
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