A Gyrostatic Low-Order Model for the El Ñino-Southern Oscillation. (15th January 2017)

• Record Type: Journal Article
• Authors: Gluhovsky, Alexander
• Other Names: Volchenkov Dimitri Academic Editor.
• Is Part Of: Complexity. Volume 2017(2017)
• Publication Date: 2017-01-15
• Subjects: Chaotic behavior in systems -- Periodicals; Complexity (Philosophy) -- Periodicals; 003
• DOI: 10.1155/2017/6176045
• Languages: English
• ISSNs: 1076-2787

Abstract

Abstract : The paper demonstrates that, similar to other important models of atmospheric phenomena, beginning with the celebrated Lorenz model of the Rayleigh-Bénard convection, the Vallis low-order model (LOM) of the El Ñino-Southern Oscillation admits a gyrostatic form and discusses how gyrostatic LOMs may offer a general framework for deriving effective physically sound models for atmospheric dynamics and time series analysis. Any such model has a quadratic integral of motion (interpreted as some form of energy), which eliminates unphysical behaviors that have often plagued atmospheric LOMs and paves way for developing Hamiltonian LOMs. Restricting LOMs to a gyrostatic form also helps to design LOMs of optimum size and provides a modular construction of LOMs using gyrostats as elementary building blocks.