Event Category: seminar

Title: The sunspot cycle, from past to future ————————————————— Presenter: Frédéric Clette, Observatoire Royal de Belgique, WDC – SILSO, Brussels Abstract: After a short review of the recent re-calibration work accomplished on the long-term series of the sunspot number and sunspot group number, I will present the current effort to recover all original raw data …