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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union

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Nonlin. Processes Geophys., 19, 315-322, 2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
08 May 2012
Oscillating forcings and new regimes in the Lorenz system: a four-lobe attractor
V. Pelino1, F. Maimone1, and A. Pasini2 1Italian Air Force, CNMCA, Pratica di Mare (Rome), Italy
2CNR, Institute of Atmospheric Pollution Research, Rome, Italy
Abstract. It has been shown that forced Lorenz models generally maintain their two-lobe structure, just giving rise to changes in the occurrence of their regimes. Here, using the richness of a unified formalism for Kolmogorov-Lorenz systems, we show that introducing oscillating forcings can lead to the birth of new regimes and to a four-lobe attractor. Analogies within a climate dynamics framework are mentioned.

Citation: Pelino, V., Maimone, F., and Pasini, A.: Oscillating forcings and new regimes in the Lorenz system: a four-lobe attractor, Nonlin. Processes Geophys., 19, 315-322,, 2012.
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