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

James W Elkins1, Jon David Nance1,2, Geoffrey S Dutton1,2, Stephen A Montzka3, Brad David Hall3, Benjamin R Miller1,4, James H Butler1, Debra Jean Mondeel1,4, Carolina Siso4, Fred L Moore1,2, 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, United States, (3)NOAA/ESRL, Global Monitoring Division, Boulder, CO, United States, (4)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (5)NOAA, Global Monitoring Division, Boulder, United States, (6)Harvard University, Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, United States, (7)University of Bristol, Bristol, United Kingdom