Abstract
AbstractExamination of the contribution from O. A. Troshichev, S. Dolgacheva, N. A. Stepanov, and D. A. Sormakov: “The PC index variations during 23/24 solar cycles: relation to solar wind parameters and magnetic disturbances,” https://doi.org/10.1029/2020JA028491 has disclosed inconsistencies in the applied methods and errors in the calculated values. Some of the discrepancies reported in the present commentary affect directly the illustrations presented in their contribution while other possible errors may not be apparent since the use of relative values in their presentation makes thorough assessments difficult.
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