2012 CCWG Workshop Presentations Update on CAM-chem Jean-Francois Lamarque, NCAR-CGD-ACD CAM4/CAM5 comparison Simone Tilmes, NCAR-CGD-ACD High resolution CAM-chem Louisa Emmons Report on Tuesday evening meetings The impact of pine beetle kill on monoterpene emissions and secondary organic aerosol formation in western North America Ashley Berg Effects of the changing climate and emissions on the air quality in the U. S. National parks Maria Val Martin CAM5 estimates of global source-receptor relationships for black carbon under present-day emission scenario Hailong Wang Global modeling of iodine in the UTLS Carlos Ordonez Sensitivity of stratospheric dynamics to uncertainty in O3 production Juno Hsu