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.
Dr Sergei Zharkov S.Zharkov@hull.ac.uk
Lecturer in Physics
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|
|Journal||Journal of Atmospheric and Solar-Terrestrial Physics|
|Peer Reviewed||Peer Reviewed|
|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|
|Keywords||Solar activity; Principal components; Dynamo waves; Gleissberg cycle|
|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/|
©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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