The impact of the Gulf Stream on the North Atlantic storm track: deterministic or stochastic?

Alison Cobb, Imperial College London, London, SW7, United Kingdom, Arnaud Czaja, Imperial College London, London, United Kingdom, Balmaseda Magdalena, European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom and Frederic Vitart, ECMWF, Reading, UK, United Kingdom