Download original image
The maxima RMk (solid line) compared to δk − 1 (dashed line) for cycles k = 1–23. An increase (decrease) of δk − 1 precedes an increase (decrease) of the maxima of the solar cycle for all k. The decrease of δ23 compared with δ22 predicts that cycle 24 will be weaker.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.