Abstract: Interdecadal climate variability in an idealized coupled ocean?atmosphere?sea-ice model is studied. The ocean component is a fully three-dimensional primitive equation model and the atmospheric component is a two-dimensional ...

Abstract: This paper constructs and analyzes a reduced nonlinear stochastic model of extratropical low-frequency variability. To do so, it applies multilevel quadratic regression to the output of a long simulation of a global ...

Abstract: The dynamical origin of midlatitude zonal-jet variability is examined in a thermally forced, quasigeostrophic, two-layer channel model on a ? plane. The model?s behavior is studied as a function of the bottom-friction ...

Abstract: This paper studies multiple regimes and low-frequency oscillations in the Northern Hemisphere zonal-mean zonal flow in winter, using 55 yr of daily observational data. The probability density function estimated in the phase ...

Abstract: Predictive models are constructed to best describe an observed field?s statistics within a given class of nonlinear dynamics driven by a spatially coherent noise that is white in time. For linear dynamics, such inverse ...

Abstract: Atmospheric low-frequency variability (LFV) is studied in a two-layer quasigeostrophic model. The model geometry is a periodic ? channel with flat bottom and zonally inhomogeneous thermal forcing. As a result of the idealized ...

Abstract: Global sea surface temperature (SST) evolution is analyzed by constructing predictive models that best describe the dataset?s statistics. These inverse models assume that the system?s variability is driven by spatially ...

Abstract: The role of mesoscale oceanic eddies is analyzed in a quasigeostrophic coupled ocean?atmosphere model operating at a large Reynolds number. The model dynamics are characterized by decadal variability that involves nonlinear ...

Abstract: A novel mechanism of decadal midlatitude coupled variability, which crucially depends on the nonlinear dynamics of both the atmosphere and the ocean, is presented. The coupled model studied involves quasigeostrophic ...