George V Khazanov¹, Margaret Chen², Colby Lemon³, Eftyhia Zesta¹ and David G Sibeck⁴, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)The Aerospace Corporation, Los Angeles, CA, United States, (3)The Aerospace Corporation, Space Science Applications Laboratory, El Segundo, CA, United States, (4)NASA Goddard Space Flight Center, NASA, Greenbelt, MD, United States