Coherence resonance in an atmospheric global circulation model.
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.
Pérez-Muñuzuri
Vicente
V
Group of Nonlinear Physics, University of Santiago de Compostela. E-15782 Santiago de Compostela, Spain. vicente.perez@cesga.es
Deza
Roberto
R
Fraedrich
Klaus
K
Kunz
Torben
T
Lunkeit
Frank
F