past1000 is an experiment of the CMIP5 - Coupled Model Intercomparison Project Phase 5 ( https://pcmdi.llnl.gov/mips/cmip5 ). CMIP5 is meant to provide a framework for coordinated climate change experiments for the next five years and thus includes simulations for assessment in the AR5 as well as others that extend beyond the AR5.

                past1000 (3.6 Last millennium) - Version 2: Consistent with PMIP (Paleo Model Intercomparison Project) requirements, Impose evolving conditions including: Solar Variations and Volcanic Aerosols.

                Experiment design: https://pcmdi.llnl.gov/mips/cmip5/experiment_design.html 
                List of output variables: https://pcmdi.llnl.gov/mips/cmip5/datadescription.html 
                Output: time series per variable in model grid spatial resolution in netCDF format
                Earth System model and the simulation information: CIM repository

                Entry name/title of data are specified according to the Data Reference Syntax ( https://pcmdi.llnl.gov/mips/cmip5/docs/cmip5_data_reference_syntax.pdf ) as activity/product/institute/model/experiment/frequency/modeling realm/MIP table/ensemble member/version number/variable name/CMOR filename.nc .