Simulating the sunspot cycle

Details Simulating the sunspot cycle Simulating the sunspot cycle

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.323..516b&link_type=abstract

Nature (ISSN 0028-0836), vol. 323, Oct. 9, 1986, p. 516-519.

Physics

28

Fossils, Solar Activity Effects, Sunspot Cycle, Histograms, Magnetic Variations, Precambrian Period, Secular Variations

Scientific paper

Fossil records of presumed solar activity in 680 Myr-old varves reveal two periods, ≡314 and 350 varve years respectively, which also appear in recent sunspot records. These periodicities, combined with a nonlinear feature of sunspot number and a theory of the asymmetry of the solar cycle, enable the sunspot record to be extrapolated back to 1800 so well that the next magnetic cycle may be predicted. The author uses a parameterized formula for the annual sunspot number for analyzing the properties of solar activity cycles from AD 1800 to 2000.

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