A new reconstruction of the D st index for 1932 – 2002

Abstract

We have reconstructed a new, homogeneous geo-magnetic D st index for 1932–2002, thus extending the original D st index by 25 years, i.e. by more than one full solar magnetic cycle. The extension was done by using data from the original set of four low-latitude stations for 1941– 1956, and by using the nearby CTO station as a predecessor of the HER station… (More)

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11 Figures and Tables