Open Access
J. Space Weather Space Clim.
Volume 5, 2015
Article Number A11
Number of page(s) 10
Published online 04 June 2015

© D.S. Krahenbuhl, Published by EDP Sciences 2015

Licence Creative Commons
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.