Michael J Mills¹, Simone Tilmes¹, Douglas Edward Kinnison², Rolando R Garcia³ and Jadwiga Richter⁴, (1)National Center for Atmospheric Research, Atmospheric Chemistry, Observations, and Modeling Laboratory, Boulder, CO, United States, (2)NCAR, Boulder, CO, United States, (3)Natl Ctr Atmospheric Research, Boulder, CO, United States, (4)National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States