Download original image
Detrended and standardized time-series of February Ap-index (first plot), sunspot number (second plot), Niño 3.4 index (third plot), aerosol optical depth (fourth plot) and QBO (fifth plot). Excluded SSW winters are marked with red lines.
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.