Simulating multiscale geophysical flows requires numerical frameworks that balance accuracy, efficiency, and scalability across a wide range of spatial scales. This presentation highlights recent advances in grid design and model coupling within next-generation Earth system models at GFDL/NOAA. I will present the Duo-Grid approach in NOAA’s dynamical core FV3 for mitigating grid imprinting on the cubed-sphere, improving numerical accuracy by ensuring physically consistent cross-edge data representation. I will then discuss two-way grid nesting strategies that enable targeted high-resolution refinement while maintaining consistency with the global solution. Finally, I will introduce recent developments in high resolution coupled atmosphere-ocean-land modeling, that enable consistent two-way interactions across model components. Together, these advances provide a unified framework for improving the fidelity and scalability of high-resolution simulations, with applications to extreme weather forecasting and climate prediction.

Lieu
École normale supérieure – PSL
24 rue Lhomond – aile Erasme
salle Claude Froidevaux – E314