Abstract: The development of perturbations that optimally trigger the onset of Euro?Atlantic blocking (BL) and strong zonal flow (SZF) regimes has been investigated. These perturbations will be called optimal transition perturbations. ...

Abstract: The sensitivity of the onset of two weather regimes with respect to initial conditions is studied. The weather regimes are a Euro?Atlantic blocking regime and a Euro?Atlantic strong zonal flow regime. Both regimes are ...