Project Sapphire

The goal of the project Sapphire will be to pioneer the representation of the coupled climate system at resolutions that explicitly represent convective storms in the tropics and meso-scale ocean eddies in the extratropics. The strategy will be to conduct experiments with the goal being to unify existing approaches for regional large eddy simulations and for strongly parameterized coupled global simulations. Initial experimental targets include global short-period uncoupled (2.5 km resolution) and coupled (5 km resolution) simulations, as well as longer higher-resolution experiments over selected regions, as for instance the tropical Atlantic and Northern Africa. As computer performance increases in the future, the length of global experiments, or the domain size of regional experiments, or the grid resolution can be increased.