title: Coherence resonance in an atmospheric global circulation model.
abstract: Numerical evidence is presented of a coherence-resonant behavior, induced on an atmospheric global circulation model by a white (in time and space) additive Gaussian noise with amplitude A << 1 . Intermediate A values enhance the spatiotemporal regularity of vortical patterns that contribute to the intra-annual variability of the atmospheric component of the climate. Only weak patterns (those appearing in the summer hemisphere) become ordered by noise.
authors.affiliation: Group of Nonlinear Physics, University of Santiago de Compostela. E-15782 Santiago de Compostela, Spain. vicente.perez@cesga.es
authors.forename: Vicente
authors.initials: V
authors.lastname: Pérez-Muñuzuri
authors.forename: Roberto
authors.initials: R
authors.lastname: Deza
authors.forename: Klaus
authors.initials: K
authors.lastname: Fraedrich
authors.forename: Torben
authors.initials: T
authors.lastname: Kunz
authors.forename: Frank
authors.initials: F
authors.lastname: Lunkeit