Alexandra L Brosius, Pennsylvania State University Main Campus, University Park, PA, United States, Lynn B Wilson III, NASA Goddard Space Flight Center, Heliospheric Physics Laboratory, Code 672, Greenbelt, MD, United States, Glyn Collinson, NASA Goddard Space Flight Center, Greenbelt, United States and Carrie M Anderson, NASA Goddard Space Flight Center, Greenbelt, MD, United States