Siyuan Wang¹, Louisa K Emmons¹, Simone Tilmes², Douglas Edward Kinnison³, Matthew C Long⁴, J F Lamarque³, Eric C Apel¹, Rebecca S Hornbrook¹, Stephen A Montzka⁵, Alfonso Saiz-Lopez⁶ and Rafael Fernandez⁶, (1)National Center for Atmospheric Research, Boulder, CO, United States, (2)National Center for Atmospheric Research, Atmospheric Chemistry, Observations, and Modeling Laboratory, Boulder, CO, United States, (3)NCAR, Boulder, CO, United States, (4)National Center for Atm Res, Boulder, CO, United States, (5)NOAA/ESRL Global Monitoring Division, Boulder, CO, United States, (6)Spanish National Research Council, Zaragoza, Spain