CNRM-CERFACS CNRM-CM6-1 model output prepared for CMIP6 RFMIP piClim-4xCO2

Coupled Model Intercomparison Project Phase 6 (CMIP6) datasets: These data include all datasets published for 'CMIP6.RFMIP.CNRM-CERFACS.CNRM-CM6-1.piClim-4xCO2' 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 CNRM-CM6-1 climate model, released in 2017, includes the following components: aerosol: prescribed monthly fields computed by TACTIC_v2 scheme, atmos: Arpege 6.3 (T127; Gaussian Reduced with 24572 grid points in total distributed over 128 latitude circles (with 256 grid points per latitude circle between 30degN and 30degS reducing to 20 grid points per latitude circle at 88.9degN and 88.9degS); 91 levels; top level 78.4 km), atmosChem: OZL_v2, land: Surfex 8.0c, ocean: Nemo 3.6 (eORCA1, tripolar primarily 1deg; 362 x 294 longitude/latitude; 75 levels; top grid cell 0-1 m), seaIce: Gelato 6.1. The model was run by the CNRM (Centre National de Recherches Meteorologiques, Toulouse 31057, France), CERFACS (Centre Europeen de Recherche et de Formation Avancee en Calcul Scientifique, Toulouse 31057, France) (CNRM-CERFACS) in native nominal resolutions: aerosol: 250 km, atmos: 250 km, atmosChem: 250 km, land: 250 km, ocean: 100 km, seaIce: 100 km. Project: 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. - Project website: https://pcmdi.llnl.gov/CMIP6.

耦合模式比较计划第六阶段（Coupled Model Intercomparison Project Phase 6，CMIP6）数据集：本数据集涵盖所有遵循`mip_era.activity_id.institution_id.source_id.experiment_id.member_id.table_id.variable_id.grid_label.version`完整数据参考语法模板发布的'CMIP6.RFMIP.CNRM-CERFACS.CNRM-CM6-1.piClim-4xCO2'相关数据集。

于2017年发布的CNRM-CM6-1气候模式包含以下组成模块：气溶胶模块：采用TACTIC_v2方案计算的指定逐月场；大气模块（atmos）：Arpege 6.3（T127格型；高斯缩减格网，总计24572个网格点，分布于128条纬度圈：南北纬30°间每纬度圈含256个网格点，向88.9°N和88.9°S处缩减至每纬度圈20个网格点；共91层，顶层高度为78.4 km）；大气化学模块（atmosChem）：OZL_v2；陆面模块（land）：Surfex 8.0c；海洋模块（ocean）：Nemo 3.6（eORCA1坐标系，主要为三元极1°分辨率；经纬度格网为362×294；共75层，顶层网格单元深度范围为0~1 m）；海冰模块（seaIce）：Gelato 6.1。

该模式由法国国家气象研究中心（Centre National de Recherches Meteorologiques，图卢兹31057）与欧洲科学计算高级研究与培训中心（Centre Europeen de Recherche et de Formation Avancee en Calcul Scientifique，图卢兹31057）联合开发运营（CNRM-CERFACS），采用原生标称分辨率：气溶胶模块：250 km，大气模块：250 km，大气化学模块：250 km，陆面模块：250 km，海洋模块：100 km，海冰模块：100 km。

本数据集作为国际协同开展的耦合模式比较计划第六阶段（CMIP6；详见《地球科学模式发展》（Geoscientific Model Development，GMD）特刊：http://www.geosci-model-dev.net/special_issue590.html）的产出成果生成。该模拟数据为解答核心科学问题的气候研究提供基础支撑，同时作为政府间气候变化专门委员会第六次评估报告（IPCC-AR6）作者群体的参考资源。CMIP6由耦合模式工作组（Working Group on Coupled Modelling，WGCM）作为世界气候研究计划（World Climate Research Programme，WCRP）的子项目协调推进。第六阶段延续了此前由气候模式诊断与比较计划（Program for Climate Model Diagnosis and Intercomparison，PCMDI）主导开展的多阶段工作，并依托地球系统网格联合会（Earth System Grid Federation，ESGF）与环境数据分析中心（Centre for Environmental Data Analysis，CEDA）及众多相关配套活动完成项目实施。原始数据托管于联邦化数据节点集群并实现部分副本存储，IPCC依赖的多数数据将由德国气候计算中心（DKRZ）托管的IPCC数据分发中心（IPCC DDC）进行长期归档保存。该项目汇聚了全球约120个全球气候模式与近45家科研机构及组织的模拟成果。——项目官网：https://pcmdi.llnl.gov/CMIP6。