. 2015 Feb 24;120(2):1215–1228. doi: 10.1002/2014JA020777
©2015. The Authors.
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.