This paper published 10th March tries to identify major episodic solar activity by using both 14C and 10Be
(note to reader, above x-axis has advancing time running right to left)
Grand solar minima and maxima deduced from 10Be and 14C: magnetic dynamo configuration and polarity reversal
F. Inceoglu, R. Simoniello, M. F. Knudsen, C. Karoff, J. Olsen, S. Turck-ChiÃ©ze, B. H. Jacobsen
A&A 577 A20 (2015)
Aims. This study aims to improve our understanding of the occurrence and origin of grand solar maxima and minima.
Methods. We first investigate the statistics of peaks and dips simultaneously occurring in the solar modulation potentials reconstructed using the Greenland Ice Core Project (GRIP) 10 Be and IntCal13 14 C records for the overlapping time period spanning between ~1650 AD to 6600 BC.
I’ve included this on the front page because I think the bimodality of solar data is an important matter where this work adds weight to the effect being real.
Open access with registration