Abstract: A modified nonlinear normal mode initialization scheme is proposed which provides a possible solution to a major problem associated with nonlinear normal mode initialization. The modified scheme retains the Hadley circulation ...

Abstract: Vertical mode initialization (VMI) in a limited-area model is compared with normal mode initialization (NMI) as performed in a spectral model. Upon interpolating all datasets from the hemispheric spectral system, the ...

Abstract: A vertical mode initialization scheme for a limited area baroclinic primitive equations prediction model is proposed. The scheme is based on the approach employed in nonlinear normal mode initialization but incorporates a ...

Abstract: The quality of numerical weather prediction available for the Southern Hemisphere from the FGGE data base has been examined. The Australian Numerical Meteorology Research Centre (ANMRC) spectral prediction model has been ...

Abstract: A five-day data assimilation experiment is described in which linear normal mode initialization is used to suppress the transient gravity waves. The initialization is performed on increments to the model fields resulting ...

Abstract: The performance of two ensemble prediction systems, that of the European Centre for Medium-Range Weather Forecasts (EC-EPS) and that of the Australian Bureau of Meteorology (BM-EPS) are compared over the Southern Hemisphere ...

Abstract: Experiments have been conducted within the framework of the Australian Bureau of Meteorology's global data assimilation and prediction system to assess the forecast impact of Southern Hemisphere sea level pressure estimates ...

Abstract: Increasing the resolution of satellite soundings of temperature and moisture from 500 to 250 km is found to be beneficial for large-scale numerical weather prediction for the Southern Hemisphere, particularly for winter. ...

Abstract: January 1977 was a month noted for its extraordinary weather over North America. The winter was dominated by two persistent large amplitude ridges positioned over the west coast of North America and the Icelandic region ...

Abstract: A data assimilation scheme for the Southern Hemisphere has been incorporated into the ANMRC hemi-insertion frequency of six hours and has been performed with the FGGE data base for the period 17?26 and the model has been ...