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

James W Elkins1, Jon David Nance2,3, Geoffrey S Dutton1,2, Stephen A Montzka4, Brad David Hall4, Benjamin R Miller1,5, James H Butler1, Debra Jean Mondeel1,5, Carolina Siso5, Fred L Moore1,2, Eric J Hintsa1,6, Steven C Wofsy7 and Matthew L Rigby8, (1)NOAA/ESRL Global Monitoring Division, Boulder, CO, United States, (2)Cooperative Institute for Research in Environmental Sciences, Boulder, United States, (3)NOAA Global Monitoring Division, Boulder, United States, (4)NOAA/ESRL, Global Monitoring Division, Boulder, CO, United States, (5)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (6)NOAA, Global Monitoring Division, Boulder, United States, (7)Harvard University, Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, United States, (8)University of Bristol, Bristol, United Kingdom