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Project: Coupled Model Intercomparison Project Phase 6 (CMIP6) datasets - These data have been generated as part of the internationally-coordinated Coupled Model Intercomparison Project Phase 6 (CMIP6; see also GMD Special Issue: http://www.geosci-model-dev.net/special_issue590.html). The simulation data provides a basis for climate research designed to answer fundamental science questions and serves as resource for authors of the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC-AR6). CMIP6 is a project coordinated by the Working Group on Coupled Modelling (WGCM) as part of the World Climate Research Programme (WCRP). Phase 6 builds on previous phases executed under the leadership of the Program for Climate Model Diagnosis and Intercomparison (PCMDI) and relies on the Earth System Grid Federation (ESGF) and the Centre for Environmental Data Analysis (CEDA) along with numerous related activities for implementation. The original data is hosted and partially replicated on a federated collection of data nodes, and most of the data relied on by the IPCC is being archived for long-term preservation at the IPCC Data Distribution Centre (IPCC DDC) hosted by the German Climate Computing Center (DKRZ). The project includes simulations from about 120 global climate models and around 45 institutions and organizations worldwide. Summary: These data include the subset used by IPCC AR6 WGI authors of the datasets originally published in ESGF for 'CMIP6.HighResMIP.NCAR.CESM1-CAM5-SE-HR' with the full Data Reference Syntax following the template 'mip_era.activity_id.institution_id.source_id.experiment_id.member_id.table_id.variable_id.grid_label.version'. The CESM 1.3 CAM5 spectral element configuration with CMIP5 forcings, hi res climate model, released in 2012, includes the following components: aerosol: MAM3 (same grid as atmos), atmos: CAM5.2 (0.25 degree spectral element; 777602 cells; 30 levels; top level 2.25 mb), atmosChem: MAM3 (same grid as atmos), land: CLM4 (same grid as atmos), ocean: POP2 (3600x2400 longitude/latitude; 62 levels; top grid cell 0-10 m), ocnBgchem: "BEC (same grid as ocean), seaIce: CICE4 (same grid as ocean). The model was run by the National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, 1850 Table Mesa Drive, Boulder, CO 80305, USA (NCAR) in native nominal resolutions: aerosol: 25 km, atmos: 25 km, atmosChem: 25 km, land: 25 km, ocean: 10 km, ocnBgchem: 10 km, seaIce: 10 km.