…Atmospheric NH3 Exchange in the Midwestern U.S. using SURFATM-NH3. Abstract ID# 26042, 2014 AGU Fall Meeting, San Francisco, CA. Caldwell J., Sibble D., Heuer M., Nelson A.J., Johnson E., M.J. Rood, Koloutsou-Vakakis S., Myles L., “Application of cavity-ring down spectroscopy to …