Reconstruction of the coupling between solar proxies: When approaches based on Kuramoto and Van der Pol models agree with each other

Anton Savostianov, Alexander Shapoval, Mikhail Shnirman

Abstract: Highlights•We extract van der Pol coupling from the solar data similarly to Kuramoto model.•The error of model misinterpretation in coupling reconstruction does not exceed 10%.%•The model misinterpretation could not be established in the anomalistic 20th cycle.