Active region influences upon the solar constant

Details Active region influences upon the solar constant Active region influences upon the solar constant

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92..818s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Jan. 20, 1987, p. 818-822.

Physics

11

Faculae, Solar Activity, Solar Constant, Sunspots, Energy Storage, Energy Transfer, Photosphere, Secular Variations, Solar Terrestrial Interactions, Sunspot Cycle

Scientific paper

The influence that active regions have upon the solar constant is discussed. Sunspots appear to lower the solar constant for the few days in which they are located near central meridian. This raises the possibility that an 11-year, solar-cycle-related depression in the solar constant may occur. Recent findings concerning the physics of active regions suggest that sunspots and faculae are largely surface features. Within that surface faculae reradiate, within a few weeks, the 'missing energy' associated with sunspots. This is consistent with the observations showing that the solar constant does not have an 11-year cycle-related depression that some authors predicted. However, there is a secular variation in the solar constant, whose explanation is not completely understood.

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