ScienceDaily: Using the powerful K computer, scientists have run an enormous global weather simulation. They ran 10,240 simulations of a model of the global atmosphere divided into 112-km sectors, and then used data assimilation and statistical methods to come up with a model closely fitting the real data for a historical time period, between November 1 and November 8, 2011. When performing numerical weather predictions, it is important that the simulation itself be accurate, but it is also key for real-world...