Integration of a semi‐implicit model with time‐dependent boundary conditions
- 1 June 1972
- journal article
- research article
- Published by Taylor & Francis in Atmosphere-Ocean
- Vol. 10 (2) , 44-55
- https://doi.org/10.1080/00046973.1972.9648331
Abstract
A semi‐implicit barotropic primitive equations model is integrated over a limited area with time dependent boundary conditions using the standard mesh and a finer mesh. Following a theorem by Charney, a minimum number of variables are specified as boundary conditions for the limited area integrations in order to avoid mathematical over‐specification. The comparison of coarse mesh limited area forecasts with the corresponding forecasts made over a much larger domain demonstrates that the essential features, namely the Rossby type perturbations, are handled almost perfectly. The fine mesh forecasts over the same limited area are also very good. Finally, the effect of specifying inaccurate boundary conditions, in the form of twelve‐hour forecasts, is briefly illustrated.This publication has 5 references indexed in Scilit:
- A SEMI-IMPLICIT SCHEME FOR GRID POINT ATMOSPHERIC MODELS OF THE PRIMITIVE EQUATIONSMonthly Weather Review, 1971
- Experiments with a Regional Fine-Mesh Prediction ModelJournal of Applied Meteorology, 1970
- Boundary Conditions for Fine-Mesh Limited-Area ForecastsJournal of Applied Meteorology, 1970
- Grid Telescoping in Numerical Weather PredictionJournal of Applied Meteorology, 1968
- NUMERICAL METHODS IN WEATHER PREDICTION: II. SMOOTHING AND FILTERING*Monthly Weather Review, 1957