Reconstruction of geomagnetic activity and near-Earth interplanetary conditions over the past 167 yr – Part 3: Improved representation of solar cycle 11

Svalgaard (2014) has recently pointed out that the calibration of the Helsinki magnetic observatory's <i>H</i> component variometer was probably in error in published data for the years 1866–1874.5 and that this makes the interdiurnal variation index based on daily means, IDV(1d)...

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Bibliographic Details
Main Authors: M. Lockwood, H. Nevanlinna, M. Vokhmyanin, D. Ponyavin, S. Sokolov, L. Barnard, M. J. Owens, R. G. Harrison, A. P. Rouillard, C. J. Scott
Format: Article
Language:English
Published: Copernicus Publications 2014-04-01
Series:Annales Geophysicae
Online Access:https://www.ann-geophys.net/32/367/2014/angeo-32-367-2014.pdf