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astro-ph.SR2023★ 43 cited
Is the -- Sunspot Number relation linear and stable ?
Frédéric Clette
The radio flux and the Sunspot Number are the most widely used long-term indices of solar activity. They are strongly correlated, which led to the publication of many…
astro-ph.SR2023★ 10 cited
Reconstruction of the Sunspot Number Source Database and the 1947 Zurich Discontinuity
Frédéric Clette, Laure Lefèvre, Sabrina Bechet +2
The recalibration of the sunspot number series, the primary long-term record of the solar cycle, requires the recovery of the entire collection of raw sunspot counts collected by t…