An Organizing Center for Thermohaline Excitability

Abshagen, Jan and Timmermann, Axel (2004) An Organizing Center for Thermohaline Excitability Journal of Physical Oceanography, 34 (12). pp. 2756-2760. DOI 10.1175/JPO2642.1.

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Abstract

The bifurcation behavior of a conceptual heat–salt oscillator model is analyzed by means of numerical continuation methods. A global (homoclinic) bifurcation acts as an organizing center for the dynamics of the simplified convective model. It originates from a codimension-2 bifurcation in an extended parameter space. Comparison with earlier work by Cessi shows that the intriguing stochastic thermohaline excitability can be understood from the bifurcation structure of the model. It is argued that global bifurcations may play a crucial role in determining long-term variability of the thermohaline circulation.

Document Type: Article
Keywords: Thermohaline Excitability
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-TM Theory and Modeling
Refereed: Yes
DOI etc.: 10.1175/JPO2642.1
ISSN: 0022-3670
Date Deposited: 03 Dec 2008 16:50
Last Modified: 04 Sep 2013 07:51
URI: http://eprints.uni-kiel.de/id/eprint/3030

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