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SC²S Colloquium - February 18, 2014

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Date: February 18, 2014
Room: 02.13.010
Time: 3 pm, s.t.

Invasive Computing Seminar - Iva Kavčič: GungHo!ing Weather and Climate

Gung Ho (Globally Uniform Next Generation Highly Optimized) is a 5 year project with the aim to research, design and develop a new dynamical core suitable for operational, global and regional, weather and climate simulation on massively parallel computers of the size envisaged over the coming 20 years. A dynamical core of any numerical weather prediction (NWP) and climate model is the discretization of governing equations representing atmospheric motions that can be resolved on the model grid. The project is a UK based collaboration of GFD, numerical and computational scientists from various universities, led by the Met Office and supported by the Science and Technology Facilities Council (STFC).

First I will give a general overview on how weather and climate models are made, with an example of the Met Office’s Unified Model (UM). Then I will talk about different aspects and challenges in constructing a new dynamical core in the GungHo project. Some of the questions are: What should replace the lat-lon grid and how to transport material on that grid; Viability of explicit vs. implicit time schemes; Code design and computational science aspects.