The data represent 6-hourly, daily and monthly average values from the land use change (maximum scenario) experiment for the MPI-M Millennium Project (http://www.mpimet.mpg.de/en/wissenschaft/working-groups/millennium.html) using the comprehensive MPI-M Earth System Model ECHAM5/JSBACH/MPI-OM/HAMOCC including the biogeophysical and biogeochemical effects of an interactive carbon cycle. This experiment is similar to the mil0001 control experiment (see http://cera-www.dkrz.de/WDCC/ui/Entry.jsp?acronym=mil0001) except that it uses a time-dependent reconstruction of vegetation cover (land use). As an additional sensitivity study to mil0002, the prescribed, time-dependent vegetation cover for this experiment between AD 800 and 1699 reflects an upper bound of uncertainty (maximum land use change) around the buest guess land use maps used in mil0002 (J. Pongratz, C. Reick, T. Raddatz and M. Claussen, 2008: A reconstruction of global agricultural areas and land cover for the last millennium. Global Biogeochem. Cycles, in press), see CERA experiment RECON_LAND_COVER_800-1992 for details (http://cera-www.dkrz.de/WDCC/ui/Entry.jsp?acronym=RECON_LAND_COVER_800-1992). The land cover maps 1700 to 2100 are the same as in mil0002 (http://cera-www.dkrz.de/WDCC/ui/Entry.jsp?acronym=mil0002). Technical details: The experiment used the following models/resolutions: ECHAM5 (EH5) Version 5.4.01 at T31L19 resolution JSBACH (JSB) at T31 resolution, one soil layer, 13 vegetation types and four vegetation tiles per grid box MPI-OM/HAMOCC Version 1.3.0 at GR3.0L40 resolution The output from the experiment is archived at hpss:/dxul/ut/9/prj/im0387/m212098/cosmos-1.1.0_millennium/experiments/mil0003
[1] DOIHaxel, J. H.; R. P. Dziak. (2005). A model intercomparison of changes in the Atlantic thermohaline circulation in response to increasing atmospheric CO2 concentration. doi:10.1029/2005GL023205
Is described by
[1] Roeckner, E.; Baeuml, G.; Bonaventura, L.; Brokopf, R.; Esch, M.; Giorgetta, M.; Hagemann, S.; Kirchner, I.; Kornblueh, L.; Manzini, E.; Rhodin, A.; Schlese, U.; Schulzweida, U.; Tompkins, A. (2003). The atmospheric general circulation model ECHAM 5. PART I: Model description. http://hdl.handle.net/11858/00-001M-0000-0012-0144-5