Forecasting the SST space-time variability of the Alboran Sea with genetic algorithms

Alberto Alvarez; Cristobal Lopez; Margalida Riera; Emilio Hernandez-Garcia; Joaquin Tintore

doi:10.1029/1999gl011046

Home/Archive/arXiv

arXiv · chao-dyn/9911012

Forecasting the SST space-time variability of the Alboran Sea with genetic algorithms

Alberto Alvarez·Cristobal Lopez·Margalida Riera·Emilio Hernandez-Garcia·Joaquin Tintore

View original source ↗Read source document ↗Export metadata ↓

Abstract

We propose a nonlinear ocean forecasting technique based on a combination of genetic algorithms and empirical orthogonal function (EOF) analysis. The method is used to forecast the space-time variability of the sea surface temperature (SST) in the Alboran Sea. The genetic algorithm finds the equations that best describe the behaviour of the different temporal amplitude functions in the EOF decomposition and, therefore, enables global forecasting of the future time-variability.

Explore related subjects

chao-dyn nlin.CD physics.ao-ph

Keep this discovery

Explore connections, maps & timelines

BibTeX RIS

Alberto Alvarez, Cristobal Lopez, Margalida Riera, Emilio Hernandez-Garcia, Joaquin Tintore. 1999-11-09. Forecasting the SST space-time variability of the Alboran Sea with genetic algorithms. https://doi.org/10.1029/1999gl011046

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

arXiv2024

Dynamical ensembles equivalence in fluid mechanics

Dissipative Euler and Navier Stokes equations are discussed with the aim of proposing several experiments apt to test the equivalence of dynamical ensembles and the chaotic hypothesis.

chao-dyn↗

arXiv2015

The Bogdanov Map: Bifurcations, Mode Locking, and Chaos in a Dissipative System

We investigate the bifurcations and basins of attraction in the Bogdanov map, a planar quadratic map which is conjugate to the Hénon area-preserving map in its conservative limit. It undergoes a Hopf bifurcation as dissipation is added, and exhibits the panoply of mode locking, Arnold tongues, and chaos as an invariant circle grows out, finally to be destroyed in the homoclinic tangency of the manifolds of a remote saddle point. The Bogdanov map is the Euler map of a two-dimensional system of ordinary differential equations first considered by Bogdanov and Arnold in their study of the versal unfolding of the double-zero-eigenvalue singularity, and equivalently of a vector field invariant under rotation of the plane by an angle $2π$. It is a useful system in which to observe the effect of dissipative perturbations on Hamiltonian structure. In addition, we argue that the Bogdanov map provides a good approximation to the dynamics of the Poincaré maps of periodically forced oscillators.

chao-dyn↗

arXiv2012

Passive Scalars and Three-Dimensional Liouvillian Maps

Global aspects of the motion of passive scalars in time-dependent incompressible fluid flows are well described by volume-preserving (Liouvillian) three-dimensional maps. In this paper the possible invariant structures in Liouvillian maps and the two most interesting nearly-integrable cases are investigated. In addition, the fundamental role of invariant lines in organizing the dynamics of this type of system is exposed. Bifurcations involving the destruction of some invariant lines and tubes and the creation of new ones are described in detail.

chao-dyn↗