Journal of Astrophysics and Astronomy

, Volume 29, Issue 1–2, pp 151–158 | Cite as

Models of solar irradiance variations: Current status

Open Access
Article

Abstract

Regular monitoring of solar irradiance has been carried out since 1978 to show that solar total and spectral irradiance varies at different time scales. Whereas variations on time scales of minutes to hours are due to solar oscillations and granulation, variations on longer time scales are driven by the evolution of the solar surface magnetic field. Here the most recent advances in modelling of solar irradiance variations on time scales longer than a day are briefly reviewed.

Key words

Sun: activity, faculae, plages, magnetic fields solar irradiance solar-terrestrial relations sunspots 

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Copyright information

© Indian Academy of Sciences 2008

Authors and Affiliations

  1. 1.Max Planck Institute for Solar System ResearchKatlenburg-LindauGermany

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