Current campaigns: POLARCAT OP3

This page provides access to plots of tropospheric trace-gas distributions from the TOMCAT global chemical transport model. The model is being run in 'near real time', meaning that model fields are usually available up to 1-2 days prior to present. TOMCAT is driven by meteorological analyses from the ECMWF, and for these simulations a resolution of approximately 2.8 x 2.8 degrees in the horizontal with 31 vertical levels is used. Global biomass burning emissions are provided by Solene Turquety, updated daily from MODIS satellite retreivals. Biomass burning emissions are distributed through the vertical column as specified by the HTAP model intercomparison exercise. Monthly-mean biogenic emissions and climatological monthly anthropogenic emissions are taken from the IPCC. For more information please contact Steve Arnold.

Institute for Climate and Atmospheric Science School of Earth and Environment University of Leeds