Modelling total solar irradiance since 1878 from simulated magnetograms

  title={Modelling total solar irradiance since 1878 from simulated magnetograms},
  author={M. Dasi-Espuig and J. Jiang and Natalie A. Krivova and Sami K. Solanki},
  journal={arXiv: Solar and Stellar Astrophysics},
We present a new model of total solar irradiance (TSI) based on magnetograms simulated with a surface flux transport model (SFTM) and the SATIRE (Spectral And Total Irradiance REconstructions) model. Our model provides daily maps of the distribution of the photospheric field and the TSI starting from 1878. We first calculate the magnetic flux on the solar surface emerging in active and ephemeral regions. The evolution of the magnetic flux in active regions is computed using a surface flux… 

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