Open Access

Fig. 3.


Download original image

(a) The monthly sunspot number (same as Fig. 2a). (b) The seasonal variations of the GPS phase scintillation occurrence rate around noon (10–14 MLT) and (c) around midnight (22–02 MLT) as a function of MLAT and month of year. The solar elevation angles of 0° and 30° at 110 km altitude above Ny-Ålesund are shown in white curves. Note that the color scales are different in panels b and c. The green solid and dashed vertical lines present the spring and autumn equinoxes, respectively.

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.