| contributor author | Tanguay, Monique | |
| contributor author | Yakimiw, Evhen | |
| contributor author | Ritchie, Harold | |
| contributor author | Robert, André | |
| date accessioned | 2017-06-09T16:08:36Z | |
| date available | 2017-06-09T16:08:36Z | |
| date copyright | 1992/01/01 | |
| date issued | 1992 | |
| identifier issn | 0027-0644 | |
| identifier other | ams-61899.pdf | |
| identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4202730 | |
| description abstract | A modified semi-Lagrangian scheme is proposed in the context of semi-implicit forecast models to reduce the important distortion of topographically forced waves that is produced when the Courant?Friedrichs?Lewy (CFL) number is greater than 1. The improved semi-Lagrangian scheme combines the original semi-implicit formulation and the spatial averaging of all nonlinear terms. The impact of the spatial averaging is assessed in two baroclinic forecast models: a global spectral model and a regional gridpoint model. The modified semi-implicit semi-Lagrangian scheme is shown to improve short- and medium-range forecasts, and to increase the efficiency of the models by reducing the number of interpolations by 20%?40%. | |
| publisher | American Meteorological Society | |
| title | Advantages of Spatial Averaging in Semi-implicit Semi-Lagrangian Schemes | |
| type | Journal Paper | |
| journal volume | 120 | |
| journal issue | 1 | |
| journal title | Monthly Weather Review | |
| identifier doi | 10.1175/1520-0493(1992)120<0113:AOSAIS>2.0.CO;2 | |
| journal fristpage | 113 | |
| journal lastpage | 123 | |
| tree | Monthly Weather Review:;1992:;volume( 120 ):;issue: 001 | |
| contenttype | Fulltext | |