Using box models to quantify zonal distributions and emissions of halocarbons in the background atmosphere.

James W Elkins1, Jon David Nance1,2, Geoffrey S Dutton1,3, Stephen A Montzka4, Brad David Hall4, Benjamin R Miller1,2, James H Butler1, Debra Jean Mondeel1,2, Carolina Siso2, Fred L Moore1,3, Eric J Hintsa1,5, Steven C Wofsy6 and Matthew L Rigby7, (1)NOAA/ESRL Global Monitoring Division, Boulder, CO, United States, (2)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (3)Cooperative Institute for Research in Environmental Sciences, Boulder, United States, (4)NOAA/ESRL, Global Monitoring Division, Boulder, CO, United States, (5)Cooperative Institute for Research in Environmental Sciences, NOAA/ESRL Global Monitoring Division, Boulder, CO, United States, (6)Harvard University, Cambridge, United States, (7)University of Bristol, Bristol, United Kingdom