Using MSSA to determine explicitly the oscillatory dynamics of weakly nonlinear climate systems

S. Raynaud, P. Yiou, R. Kleeman, S. Speich
2005 Nonlinear Processes in Geophysics  
This paper presents a statistical diagnostic to interpret the dynamics of nonlinear variability in models. It consists in applying the Multichannel Singular Spectrum Analysis to the variability of a suitable equation of a dynamical system. This method enables us to evaluate the sensitivity of the oscillatory features of a physical model to tendencies in its mathematical formulation. Hence, responses in amplitude and frequency are determined in the phase space of the model. The example of
more » ... nual variability of the tropical Pacific climate through the analysis the Sea Surface Temperature equation of a hybrid coupled model is used to illustrate and validate the methodology.
doi:10.5194/npg-12-807-2005 fatcat:limsygp3v5e2favnvurivfp5t4