2013 CCWG Workshop Presentations CAM-chem update Jean-Francois Lamarque, NCAR-ACD-CGD Updates on available compsets and their performance Simone Tilmes, NCAR-ACD-CGD A new aerosol diagnostics package Po-Lun Ma Is the indirect forcing by aircraft soot positive or negative? Cheng Zhou Improving remote aerosol distributions in CAM5 and assessing the CAM5: Impact of sectional microphysics on simulated particle properties and implications Hailong Wang Coupling of an advanced particle microphysics (AMP) model with CAM5: Impact of sectional microphysics on simulated particle properties and implications Fangqun Yu Status and development of aerosol branch Steve Ghan Discussion