A Super High-Resolution Global Atmospheric Simulation by the Non-Hydrostatic Icosahedral Atmospheric Model, NICAM
SessionInvited Talks - Satoh and Schulthess
Session ChairKengo Nakajima
Presenter
Event Type
Invited Talk
Applications
Exascale
TimeWednesday, November 16th10:30am - 11:15am
LocationBallroom-EFGHIJ
DescriptionIn the field of the atmospheric science, general circulation models (GCMs) have been used to simulate global atmospheric circulations both for numerical weather forecasts and climate change projections. GCMs use discretized equations for fluids and integrate them for winds, temperature, and humidity. GCMs are also coupled with ocean, land surface, and eco-system models to construct earth system models. Until very recently, horizontal resolution of GCMs is several tens of kilometers. As computer power increases, resolutions of GCMs become higher, and more complicated processes are introduced. Our research team has developed a new type of the global atmospheric model called Non-hydrostatic Icosahedral Atmospheric Model (NICAM) which covers the earth with a quasi-uniform mesh, whose horizontal interval can be a sub-kilometer (870 m) using the K computer. With this model, fine structures of global cloud distributions are reproduced well and can be viewed as a global cloud resolving model (GCRM). The target of GCRM is multi-scale and multi-physics atmospheric phenomena whose scales are from a sub-kilometers to several ten-thousand kilometers with interactive processes of cloud microphysics, radiation, and turbulence. This presentation overviews recent results from the super-high resolution simulations with NICAM using the K computer and outlooks the post K era toward new horizon simulations such as global large-scale eddies (global-LES) simulations.
Presenter
