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Real-Time Reconstructions of Solar Irradiance in SOTERIA Project

Explore real-time reconstructions of solar irradiance for space weather applications in the SOTERIA project. Learn about the components and models used to estimate total solar irradiance (TSI) from sunspot and surface image data, as well as ∆14C data. Discover how these reconstructions can contribute to space weather forecasting.

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Real-Time Reconstructions of Solar Irradiance in SOTERIA Project

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  1. Real-Time Reconstructions of the Solar Irradiance for Space Weather Applications in the SOTERIA Project Framework L.E.A. Vieira, T. Dudok De Wit, M. Kretzschmar, G. Cessateur Lab. de Physique et Chimie de l'Environnement et de l'Espace CNRS and University of Orleans 7th European Space Weather Week, November 2010

  2. TSI Observations C. Fröhlich

  3. TSI and Sunspots

  4. TSI Reconstruction from Surface Images Surface Images (High Cadence) Daily values Semi-empirical model with main assumption: B-field at solar surface causes TSI + SSI variations Components: Spots (contin. images), faculae + network (magnetograms), quiet Sun Model atmospheres 1 free parameter

  5. Filling factors

  6. Filling factors of the five component model • Quiet Sun (q) • Sunspot Umbra (u) • sunspot penumbra (p) • Faculae + Network (f)

  7. SATIRE TSI vs. PMOD composite Wenzler et al. 2006, A&A

  8. TSI Reconstruction from Sunspot Data Surface Images (High Cadence) Daily values

  9. Estimative of the photospheric magnetic flux Krivova et al., A&A, 2007 Vieira & Solanki, A&A, ,2010 Krivova et al., JGR, 2007, Submitted

  10. Krivova et al., 2010, JGR, Submitted

  11. TSI Reconstruction from ∆14C Daily values Decadal values Solanki et al., 2004

  12. Estimative of the photospheric magnetic flux

  13. Long-term total magnetic flux reconstruction from ∆14C data

  14. Feedforward network model • Quiet Sun (q) • Sunspot Umbra (u) • sunspot penumbra (p) • Faculae + Network (f)

  15. Real-Time Reconstructions of the Solar Irradiance for Space Weather Applications in the SOTERIA Project Framework L.E.A. Vieira, T. Dudok De Wit, M. Kretzschmar, G. Cessateur Lab. de Physique et Chimie de l'Environnement et de l'Espace CNRS and University of Orleans 7th European Space Weather Week, November 2010

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