High-Resolution Non-Hydrostatic Simulations of Flash-Flood Episodes with Grid-Nesting and Ice-Phase Parameterization

作者: J. Stein , E. Richard , J. P. Lafore , J. P. Pinty , N. Asencio

DOI: 10.1007/S007030050016

关键词: Flood mythNesting (process)Computer simulationSpatial distributionFlash floodMeteorologyPrecipitationFront (oceanography)ClimatologyGridGeology

摘要: ¶Simulations of two heavy rainfall events south the Alps have been conducted with a non-hydrostatic model at horizontal resolutions ranging from 40 to 2.5 km. Emphasis is placed on assessment recent developments: detailed explicit mixed phase microphysical scheme and two-way interactive grid nesting method. In high-resolution simulations, impact ice was found be quite substantial, accelerating propagation surface front modifying spatial distribution rainfall. Simulations carried out yielded more realistic overall precipitation patterns, particularly finest resolution.

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