GEOS-Chem model
   A global three-dimensional model of atmospheric composition driven by assimilated meteorological observations from the Goddard Earth Observing System (GEOS)
   http://www-as.harvard.edu/chemistry/trop/geos/index.html

GO CART model
   Simulates major tropospheric aerosol components, including sulfate, dust, black carbon (BC), organic carbon (OC), and sea-salt aerosols.
   http://code916.gsfc.nasa.gov/People/Chin/gocartinfo.html

IMAGE - Atmospheric Chemistry
   Calculates the concentrations of the most important greenhouse gases and other reactive gases.
   http://www.mnp.nl/image/model_details/atmospheric_chemistry/

MOZART (Model of Ozone and Related Tracers)
   A global chemistry and transport model
   http://www.mpimet.mpg.de/en/wissenschaft/modelle/mozart.html

RIAM-CFORS (Chemical weather FORecast System)
   A global chemical transformation and transport model.
   http://cfors.riam.kyushu-u.ac.jp/~cfors/

Unified Chemistry Transport Model (UCTM) Model
   Designed and developed to study both tropospheric and stratospheric photochemistry.
   http://gest.umbc.edu/research/bian/uctm/index.html