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Reply to comment on the paper “ on a role of quadruple component of magnetic field in defining solar activity in grand cycles” by Usoskin (2017)

Zharkova, V.; Popova, E.; Shepherd, S.; Zharkov, S.

Authors

V. Zharkova

E. Popova

S. Shepherd



Abstract

In this communication we provide our answers to the comments by Usoskin (2017) on our recent paper (Popova et al, 2017a). We show that Principal Component Analysis (PCA) allows us to derive eigen vectors with eigen values assigned to variance of solar magnetic field waves from full disk solar magnetograms obtained in cycles 21–23 which came in pairs. The current paper (Popova et al, 2017a) adds the second pair of magnetic waves generated by quadruple magnetic sources. This allows us to recover a centennial cycle, in addition to the grand cycle, and to produce a closer fit to the solar and terrestrial activity features in the past millennium.

Journal Article Type Article
Publication Date 2018-09
Journal Journal of Atmospheric and Solar-Terrestrial Physics
Print ISSN 1364-6826
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 176
Pages 72-82
APA6 Citation Zharkova, V., Popova, E., Shepherd, S., & Zharkov, S. (2018). Reply to comment on the paper “ on a role of quadruple component of magnetic field in defining solar activity in grand cycles” by Usoskin (2017). Journal of atmospheric and solar-terrestrial physics, 176, 72-82. https://doi.org/10.1016/j.jastp.2017.09.019
DOI https://doi.org/10.1016/j.jastp.2017.09.019
Keywords Solar activity; Principal components; Dynamo waves; Gleissberg cycle
Publisher URL https://www.sciencedirect.com/science/article/pii/S1364682617304728?via%3Dihub
Related Public URLs http://nrl.northumbria.ac.uk/32920/
Additional Information ©2019, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/

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Copyright Statement
©2019, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/





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