Eric J Bucsela¹, Kenneth E Pickering², Dale J Allen³, Diego G Loyola⁴, Henk Eskes⁵, Pepijn Veefkind⁵, William John Koshak⁶ and Nickolay Anatoly Krotkov⁷, (1)SRI International Menlo Park, Menlo Park, CA, United States, (2)NASA Goddard Space Flight Cent, Greenbelt, MD, United States, (3)University of Maryland College Park, College Park, MD, United States, (4)German Aerospace Center (DLR), The Remote Sensing Technology Institute (IMF), Oberpfaffenhofen, Germany, (5)Royal Netherlands Meteorological Institute, De Bilt, Netherlands, (6)NASA Marshall Space Flight Center, Huntsville, AL, United States, (7)NASA Goddard Space Flight Center, Greenbelt, MD, United States