Journal
METEOROLOGY AND ATMOSPHERIC PHYSICS
Volume 82, Issue 1-4, Pages 287-301Publisher
SPRINGER WIEN
DOI: 10.1007/s00703-001-0593-8
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Currently available computer power allows to run operational numerical weather prediction models at resolutions higher than 10km. The aim of such high resolution modeling is the prediction of local weather, including orographically induced winds and local precipitation patterns. In this range the hydrostatic approximation is no longer valid and nonhydrostatic models have to be used instead. For several decades these models have been developed for research purposes only, but operational application is now reality. In this paper, the numerical methods used in current nonhydrostatic forecast models will be reviewed and some promising techniques in this field will be discussed. Special attention is given to aspects such as the choice of the vertical coordinate, the efficiency of algebraic solvers for semi-implicit time discretizations, and accurate and nonoscillatory advection schemes.
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