Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...302..826f&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 302, March 15, 1986, p. 826-835.
Astronomy and Astrophysics
Astrophysics
73
Faculae, Irradiance, Solar Constant, Solar Radiation, Stellar Luminosity, Sunspots, Correlation, Earth Radiation Budget, Energy Budgets, Power Spectra, Radiative Transfer, Radiometers, Solar Backscatter Uv Spectrometer, Solar Magnetic Field, Solar Maximum Mission
Scientific paper
The authors investigate the facular contribution to the total solar irradiance, using the daily active cavity radiometer irradiance monitor (ACRIM) radiometry for 1980 - 1982 and the Earth Radiation Budget (ERB) radiometry for 1978 - 1982. A cross-correlation analysis of the total irradiance, the UV flux measured by Nimbus 7 and calculated contributions from observed sunspot and facular areas is presented. It is found that the solar irradiance records, after subtraction of the calculated sunspot-blocking contribution, exhibit a short-term modulation that is better explained by faculae than by errors in the sunspot-blocking function. The data for 1980 indicate that the facular contribution was comparable to that of spots over time scales of active region evolution in that year.
Foukal Peter
Lean Judith
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