This simulation was performed with the first version of the coupled global model CGCMI. The model is forced by an effective greenhouse forcing corresponding to that observed from 1850 to the present, and a forcing corresponding to an increase of CO2 at rate of 1% per year thereafter until year 2100. The direct forcing effect of sulphate aerosols is not included in this simulation. Details of the model and an analysis of this simulation are given in Boer et al. (1997). Note: Due to data archival problems, data for May 1985 in the GHG (CO2 only) run were lost. In order to provide continuous time series, this missing month was filled by linear interpolation between adjacent months. These data represent monthly averaged surface values of selected variables for the IPCC-Data Distribution Centre. (see also http://www.ipcc-data.org/ )