Solar irradiance modulation by active regions during 1980

Details Solar irradiance modulation by active regions during 1980 Solar irradiance modulation by active regions during 1980

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...80...87s&link_type=abstract

Solar Physics, vol. 80, Sept. 1982, p. 87-98.

Physics

54

Brightness Distribution, Irradiance, Periodic Variations, Photosphere, Solar Activity, Stellar Models, Faculae, Limb Darkening, Sunspots

Scientific paper

The solar irradiance modulation due to active regions during 1980 has been investigated in detail. Specifically, the uncertainties caused by ground-based data used as input in the modeling effort, and by currently incomplete knowledge of the proper parameters that describe the angular variation of sunspot and facular contrasts are estimated. It is concluded that the most significant uncertainties are due to errors in area measurements and, possibly, varying spot and facular brightness. A 'standard model' for later use is derived to a best-fit technique of the currently available ACRIM irradiance data and the predictions of models with appropriately varied parameters. Finally, the expected irradiance for the entire year of 1980 is computed.

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