The importance of improved facular observations in understanding solar constant variations

Details The importance of improved facular observations in understanding solar constant variations The importance of improved facular observations in understanding solar constant variations

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...294..689s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 294, July 15, 1985, p. 689-696.

Astronomy and Astrophysics

Astrophysics

33

Faculae, Irradiance, Solar Constant, Sunspots, Integral Equations, Least Squares Method, Nimbus 7 Satellite

Scientific paper

A new study of solar irradiance modeling has been undertaken to improve the previous modeling efforts and perhaps to resolve the energy-balance question. In the present study, the daily sunspot and facular areas (using plages as a proxy measure of faculae) have been utilized, as well as a plage intensity index to examine brightness variations. It is noted that the reported plage areas changed by a factor of 2 near the end of 1979. Although this can be partially modeled because a commensurate change in plage brightness occurs, it leads to the conclusion that facular areas and brightness uncertainties prevent a definitive answer to the energy-balance question with this technique.

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