Review of numerical methods for nonhydrostatic weather prediction models |
| |
| Authors: | J Steppeler R Hess U Schättler L Bonaventura |
| |
| Institution: | (1) Deutscher Wetterdienst, Offenbach, Germany, DE;(2) Dipartimento di Ingegneria Civile ed Ambientale, Università degli Studi di Trento, Trento, Italy, IT |
| |
| Abstract: | Summary ?Currently available computer power allows to run operational numerical weather prediction models at resolutions higher than
10 km. 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 In this range the hydrostatic approximation is no longer valid and nonhydrostatic models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 non-oscillatory
advection schemes.
Received July 6, 2001; revision October 12, 2001 |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
