Virtual Event: Annual Seminar 2020

Over the next decade, various aspects of ECMWF’s Integrated Forecasting System (IFS) need to be adapted for higher-resolution global forecasts called for by ECMWF’s long-term strategy. The current IFS dynamical core relies on the spectral-transform method to solve the hydrostatic primitive equations with a semi-implicit semi-Lagrangian integration scheme. ECMWF is continuing to develop this...

Since 1988, Japan Meteorological Agency (JMA) has been operating a global spectral hydrostatic primitive equations model named Global Spectral Model (GSM). In its first implementation, GSM employed spherical harmonics transform on quadratic Gaussian grid, an Eulerian advection scheme, and a semi-implicit time integration method. These methods were chosen to take advantages of the spectral...

In this lecture we will present a novel scalable high-order conservative nonhydrostatic multi-moment finite volume dynamical core. The new dynamical core is based on so-called multi-moment constrained finite volume (MCV) method, which is well-balanced among solution quality (accuracy and robustness), algorithmic simplicity, computational efficiency and flexibility for model configuration....