Derwent, Role of climate feedback on methane and ozone studied with acoupled OceanAtmosphere-Chemistry model, Geophys

Abstract. We present results from two experiments carried out with a coupled ocean-atmosphere-tropospheric chem-istry model run continously over the period 1990 to 2100. In the control experiment, climate is unforced, but emissions of trace gases to the chemical model increase in line with an illustrative scenario for future trace gas emissions with medium high growth. In the climate change experiment trace gas emissions are identical to the control, but climate is also forced using greenhouse gas concentrations and SO2 emissions from the same scenario. Global average methane in the climate change experiment increased from 1670 ppb