Report on the IGAC/SPARC Chemistry-Climate Model Initiative (CCMI) 2013 Science Workshop

Approximately 130 participants attended the IGAC/ SPARC Chemistry-Climate Model Initiative (CCMI, http://www.pa.op.dlr.de/CCMI/) 2013 Science Workshop that was held in Boulder, CO, USA at the Center Green Campus of the National Center for Atmospheric Research (NCAR) from 14-16 May 2013, followed by a Scientific Steering Committee Meeting on the morning of 17 May 2013. Workshop participants’ expertise ranged from global chemistry and climate model developers and users, to insitu and satellite observational experts, with interests in both tropospheric and stratospheric chemistry and climate. Science