Ali H Omar¹, Pieternel Levelt², Shobha Kondragunta³, Paulo Artaxo⁴, Arlindo da SIlva⁵, Drobot Sheldon⁶, Omar Emam Sr⁷, Jonathan E Hickman⁸, Barry L Lefer⁹, Dennis Nicks⁶, Raid M M Suleiman¹⁰, Ben Veihelmann¹¹, Helen Marie Worden¹², Shima Bahramvash Shams¹³, Jun Wang¹⁴, K. Emma Knowland¹⁵ and James W Hannigan¹⁶, (1)NASA Langley Research Center, Hampton, VA, United States, (2)National Center for Atmospheric Research (NCAR), Atmospheric Chemistry Observations & Modeling Laboratory (ACOM), Boulder, United States, (3)NOAA/NESDIS/Center for Satellite Applications and Research, College Park, United States, (4)University of Sao Paulo, Sao Paulo, Brazil, (5)NASA Goddard Space Flight Center, Emeritus, Greenbelt, United States, (6)BAE Systems, Inc., Space and Mission Systems, Boulder, CO, United States, (7)Intospass, Stevenage, United Kingdom, (8)NASA Goddard Institute for Space Studies, New York, NY, United States, (9)NASA HQ, Washington DC, United States, (10)Center for Astrophysics | Harvard & Smithsonian, Cambridge, United States, (11)ESA-ESTEC, Noordwijk, Netherlands, (12)NSF National Center for Atmospheric Research (NSF NCAR), Atmospheric Chemistry Observations & Modeling Laboratory (ACOM), Boulder, CO, United States, (13)NCAR, Research Applications Laboratory, Austin, United States, (14)the University of Iowa, Iowa City, United States, (15)NASA Headquarters, Washington, DC, United States, (16)NCAR/ACD, Boulder, United States