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)...
Main Authors: | , , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
Copernicus Publications
2014-04-01
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Series: | Annales Geophysicae |
Online Access: | https://www.ann-geophys.net/32/367/2014/angeo-32-367-2014.pdf |