Shima Bahramvash Shams¹, Von Patrick Walden¹, James W Hannigan², William John Randel², Douglas Edward Kinnison³, Irina V Petropavlovskikh^4,5 and Amy H Butler^5,6, (1)Washington State University, Pullman, WA, United States, (2)National Center for Atmospheric Research, Boulder, CO, United States, (3)NCAR, Boulder, CO, United States, (4)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (5)NOAA Boulder, Boulder, CO, United States, (6)Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States