Articles | Volume 38, issue 6
https://doi.org/10.5194/angeo-38-1237-2020
© Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
Regular paper
| 
15 Dec 2020
Regular paper |
| 15 Dec 2020
| 15 Dec 2020
Estimating the maximum of the smoothed highest 3-hourly aa index in 3 d by the preceding minimum for the solar cycle
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