A Maunder Minimum Scenario Based on Cross-Hemispheric Coupling and Intermittency

Details A Maunder Minimum Scenario Based on Cross-Hemispheric Coupling and Intermittency A Maunder Minimum Scenario Based on Cross-Hemispheric Coupling and Intermittency

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005soph..229..345c&link_type=abstract

Solar Physics, Volume 229, Issue 2, pp.345-358

Physics

13

Scientific paper

A novel scenario for Maunder minimum-like grand minima epochs of reduced solar activity is proposed, based on diffusive coupling between both solar hemispheres, each susceptible to stochastically-driven intermittent behavior. After introducing cross-hemispheric coupling into a well-validated reduced model of the solar cycle based on the Babcock Leighton mechanism for poloidal field regeneration, simulations are presented demonstrating that even weak coupling can lead to a high degree of synchronicity between the two hemispheres. This is in qualitative agreement with the similar onset and recovery times of sunspot activity at and around the Maunder minimum. Moreover, even weak coupling manages to greatly reduce the frequency and duration of quiescent episodes, again in qualitative agreement with the relative paucity of grand minima in the sunspot and radioisotope records.

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