Slide 1

Real-Time Reconstructions of the Solar Irradiance for Space Weather Applications in the SOTERIA Project Framework 7th European Space Weather Week, November 2010 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 Slide 2 2 TSI Observations C. Frhlich Slide 3 TSI and Sunspots Slide 4 8/21/20084 TSI Reconstruction from Surface Images Daily values Surface Images (High Cadence) 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 Slide 5 8/21/20085 Filling factors Slide 6 8/21/20086 Filling factors of the five component model Quiet Sun ( q ) Sunspot Umbra ( u) sunspot penumbra ( p ) Faculae + Network ( f ) Slide 7 8/21/20087 SATIRE TSI vs. PMOD composite Wenzler et al. 2006, A&A Slide 8 8/21/20088 TSI Reconstruction from Sunspot Data Daily values Surface Images (High Cadence) Slide 9 9 Estimative of the photospheric magnetic flux Krivova et al., A&A, 2007 Vieira & Solanki, A&A,,2010 Krivova et al., JGR, 2007, Submitted Slide 10 Krivova et al., 2010, JGR, Submitted Slide 11 8/21/200811 TSI Reconstruction from 14 C Daily valuesDecadal values Solanki et al., 2004 Slide 12 12 Estimative of the photospheric magnetic flux Slide 13 Long-term total magnetic flux reconstruction from 14C data 8/21/200813 Slide 14 8/21/200814 Feedforward network model Quiet Sun ( q ) Sunspot Umbra ( u) sunspot penumbra ( p ) Faculae + Network ( f ) Slide 15 8/21/200815 Slide 16 8/21/200816 Slide 17 Real-Time Reconstructions of the Solar Irradiance for Space Weather Applications in the SOTERIA Project Framework 7th European Space Weather Week, November 2010 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