Articles | Volume 21, issue 6
Nonlin. Processes Geophys., 21, 1113–1126, 2014

Special issue: Complex network approaches to analyzing and modeling nonlinear...

Nonlin. Processes Geophys., 21, 1113–1126, 2014

Research article 24 Nov 2014

Research article | 24 Nov 2014

Long-term changes in the north–south asymmetry of solar activity: a nonlinear dynamics characterization using visibility graphs

Y. Zou et al.

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Cited articles

Agnihotri, R., Dutta, K., Bhushan, R., and Somayajulu, B.: Evidence for solar forcing on the Indian monsoon during the last millennium, Earth Planet. Sc. Lett., 198, 521–527,, 2002.
Ahmadlou, M. and Adeli, H.: Visibility graph similarity: A new measure of generalized synchronization in coupled dynamic systems, Physica D, 241, 326–332,, 2012.
Bard, E. and Frank, M.: Climate change and solar variability: What's new under the Sun?, Earth Planet. Sc. Lett., 248, 480–493,, 2006.
Barrat, A. and Weigt, M.: On the properties of small-world network models, Eur. Phys. J. B, 13, 547–560,, 2000.
Bond, G., Kromer, B., Beer, J., Muscheler, R., Evans, M. N., Showers, W., Hoffmann, S., Lotti-Bond, R., Hajdas, I., and Bonani, G.: Persistent solar influence on North Atlantic climate during the Holocene, Science, 294, 2130–2136,, 2001.
Short summary
We use visibility graphs to characterize asymmetries in the dynamics of sunspot areas in both solar hemispheres. Our analysis provides deep insights into the potential and limitations of this method, revealing a complex interplay between effects due to statistical versus dynamical properties of the observed data. Temporal changes in the hemispheric predominance of the graph connectivity are found to lag those directly associated with the total hemispheric sunspot areas themselves.