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URL :  The Solar Cycle
Author : David H. Hathaway
Detail : eBook Edition: 2015

The Solar Cycle is reviewed. The 11-year cycle of solar activity is characterized by the rise and fall in the numbers and surface area of sunspots. A number of other solar activity indicators also vary in association with the sunspots including; the 10.7 cm radio flux, the total solar irradiance, the magnetic field, flares and coronal mass ejections, geomagnetic activ-ity, galactic cosmic ray fluxes, and radioisotopes in tree rings and ice cores.

Individual solar cycles are characterized by their maxima and minima, cycle periods and amplitudes, cycleshape, the equatorward drift of the active latitudes, hemispheric asymmetries, and active lon-gitudes. Cycle-to-cycle variability includes the Maunder Minimum, the Gleissberg Cycle, and the Gnevyshev–Ohl (even-odd) Rule. Short-term variability includes the 154-day periodicity, quasi-biennial variations, and double-peaked maxima. We conclude with an examination of prediction techniques for the solar cycle and a closer look at cycles 23 and 24.(From Author)

eBook Contents

Introduction - The Solar Cycle Discovered - Solar Activity Data - Individual Cycle Characteristics - Long-Term Variability - Short-Term Variability - Solar Cycle Predictions - Cycle 23/24 minimum and cycle 24 - Conclusions

eBook License: Copyrighted from the NASA Ames Research Center

Free PDF eBook – 4.7 Mb – 81 Pages
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