Well, if you are the Swiss National Supercomputing Center (CSCS) - a major European institution for computational research - you might throw a petaflop of GPU-accelerated processing power at the problem.
It is building a new Cray XC30 supercomputer - dubbed "Piz Daint", apparently after a mountain in the Swiss Alps - that will be extended with GPU accelerators. The goal is to expand the depth of the center's research in weather modeling.
On an Nvidia blog, Sumit Gupta writes:
With NVIDIA Tesla K20X GPU accelerators (right), Piz Daint will have more than 1 petaflops of performance – that’s 1,000 trillion floating point operations per second – which is expected to make it the fastest GPU accelerator-based scientific supercomputer in Europe when it becomes operational in early 2014.
Based on the NVIDIA Kepler architecture – the world’s fastest and most energy-efficient high performance computing architecture – the Tesla GPUs will dramatically accelerate performance at an affordable cost. This is key as running complex, compute-intensive simulations of large-scale environmental phenomenon accurately takes massive computing resources.