Mijeong Park¹, Sean M Davis², William John Randel¹, Karen Hepler Rosenlof³, Robert P Damadeo⁴, David E Flittner⁴, Dale F Hurst⁵, Holger Voemel⁶ and Henry B Selkirk⁷, (1)National Center for Atmospheric Research, Boulder, CO, United States, (2)Chemical Sciences Division, NOAA Earth System Research Laboratory; Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (3)NOAA Earth System Research Laboratory, Chemical Sciences Division, Boulder, CO, United States, (4)NASA Langley Research Center, Hampton, VA, United States, (5)NOAA Earth System Research Laboratory, Global Monitoring Division, Boulder, CO, United States, (6)DWD, Tauche, Germany, (7)GESTAR, Universities Space Research Association, Columbia, MD, United States