期刊
出版社
ROYAL SOC
DOI: 10.1098/rsta.2018.0148
关键词
global high-resolution modelling; ICON; IFS; scalability; exascale computing
资金
- European Union's Horizon 2020 research and innovation programme [675191]
- Royal Society
- ESiWACE project
- project HD(CP)2 [01LK1501B]
- Hans Ertel Center for Weather Research (HErZ)
- BMVI (Federal Ministry of Transport and Digital Infrastructure)
We discuss scientific features and computational performance of kilometre-scale global weather and climate simulations, considering the Icosahedral Non-hydrostatic (ICON) model and the Integrated Forecast System (IFS). Scalability measurements and a performance modelling approach are used to derive performance estimates for these models on upcoming exascale supercomputers. This is complemented by preliminary analyses of the model data that illustrate the importance of high-resolution models to gain improvements in the accuracy of convective processes, a better understanding of physics dynamics interactions and poorly resolved or parametrized processes, such as gravity waves, convection and boundary layer. This article is part of the theme issue 'Multiscale modelling, simulation and computing: from the desktop to the exascale'.
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