We study solar variability on timescales of days to centuries.
This includes:
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Quantitative modelling of total and spectral irradiance variations and of
the surface magnetic flux
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Reconstructing magnetic flux and irradiance since the Maunder minimum
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Reconstructing cosmic ray flux over centuries.
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Reconstructing the sunspot number and irradiance over the Holocene.
The aim of this research is to understand the physical mechanisms
responsible for solar brightness variations and, finally, to predict future
variability of the Sun.
