An article lead-authored by graduate student Christer van der Meeren of the Birkeland Centre for Space Science at the University of Bergen has been selected to provide the cover image for the October 2014 issue of the Journal of Geophysical Research - Space Physics. The article examines the occurrence of GPS scintillations and irregularities in relation to a tongue of enhanced ionization that extends into the nightside ionosphere at polar latitudes.

The cover image shows a sequence of maps of total electron content (TEC) obtained from GPS measurements with simultaneous convection patterns obtained from analysis of SuperDARN velocity data overlaid. The circle indicates the field of view of instrumentation located on on Svalbard.

Christer is advised by Prof. Kjellmar Oksavik. The figure was generated with the help of the on-line GPS/TEC plotting tools developed by graduate student Evan Thomas at Virginia Tech and collaborators at MIT Haystack Observatory.