IPCC-AR4 MPI-ECHAM5_T63L31 MPI-OM_GR1.5L40 1%/year CO2 increase experiment to quadrupling run no.1: atmosphere 6 HOUR values MPImet/MaD Germany

Project: IPCC Assessment Report Four ECHAM5/MPIOM data sets - The project embraces the simulations with the coupled climate model ECHAM5/MPIOM, relevant for the 4th Assessment Report (AR4, http://www.ipcc.ch/ipccreports/assessments-reports.htm ) of the Intergovernmental Panel on Climate Change (IPCC). The IPCC has been established by WMO and UNEP to assess scientific, technical and socio-economic information, relevant for the understanding of climate change, its potential impacts and options for adaptation and mitigation. A more detailed description about the work of the IPCC can be found at the IPCC homepage ( http://www.ipcc.ch ) and at ( www.grida.no/climate/ipcc ). As a further development the Special Report on Emission Scenarios (SRES, http://www.grida.no/Climate/ipcc/emission/) have been constructed, to describe (potential) future developments in the global environment with special reference to the production of greenhouse gases and to aerosol precursor emissions. A set of four scenario families (A1, A2, B1, B2) have been developed (see also http://www.grida.no/climate/ipcc/emission/index.htm ) The model output data are available at the World Data Center for Climate, Hamburg.( wdc-climate.de ).Projection of future trends based on selected emission scenarios are provided through this project for a great many model variables of ECHAM5/MPIOM . For a selected set of variables the IDCC-Data Distribution Center provides additional data sets from a multitude of models that contribute to the IPCC-AR4 report (project: IPCC_DDC_AR4). Summary: The data represent 6 hours values of a simulation of an annual increase of 1%,starting in 1931, until CO2 quadrupling. In the year 2001 the CO2 concentration were held constant. The simulation is a continuation of the 1CO2_2-run and was run on a NEC-SX6 (hurrikan), the output from the model run is stored in : hurrikan.dkrz.de:/ut/k/k204098/EXP000/run017 Datasets with monthly mean values are also available.