CNRM-CERFACS CNRM-ESM2-1 model output prepared for CMIP6 AerChemMIP histSST-piCH4

Coupled Model Intercomparison Project Phase 6 (CMIP6) datasets: These data include all datasets published for 'CMIP6.AerChemMIP.CNRM-CERFACS.CNRM-ESM2-1.histSST-piCH4' 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-ESM2-1 climate model, released in 2017, includes the following components:
aerosol: TACTIC_v2, 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: REPROBUS-C_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), ocnBgchem: Pisces 2.s, 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, ocnBgchem: 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：本数据集涵盖所有针对`CMIP6.AerChemMIP.CNRM-CERFACS.CNRM-ESM2-1.histSST-piCH4`发布的数据集，其完整数据引用语法遵循模板`mip_era.activity_id.institution_id.source_id.experiment_id.member_id.table_id.variable_id.grid_label.version`。

于2017年发布的CNRM-ESM2-1气候模式包含以下组成模块：气溶胶模块：TACTIC_v2；大气模块：Arpege 6.3（T127格型，即高斯缩减格网，总计24572个网格点，分布于128条纬度圈：南北纬30度之间每条纬度圈包含256个网格点，向南北纬88.9度逐渐缩减至每条纬度圈20个网格点；共91层，顶层高度为78.4 km）；大气化学模块：REPROBUS-C_v2；陆面模块：Surfex 8.0c；海洋模块：Nemo 3.6（eORCA1坐标系统，主要为1度分辨率的三极格网，经纬度格点为362×294；共75层，顶层网格深度范围为0~1 m）；海洋生物地球化学模块：Pisces 2.s；海冰模块：Gelato 6.1。

该模式由法国国家气象研究中心（Centre National de Recherches Meteorologiques，法国图卢兹31057）与欧洲高级科学计算研究与培训中心（Centre Europeen de Recherche et de Formation Avancee en Calcul Scientifique，法国图卢兹31057）联合组建的CNRM-CERFACS完成开发与运行，其标称原生分辨率如下：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，海洋生物地球化学模块100 km，海冰模块100 km。

本数据集作为国际协调推进的耦合模式比较计划第六阶段（CMIP6，详见《地球科学模式发展》特刊：http://www.geosci-model-dev.net/special_issue590.html）的产出成果之一，其模拟数据可为解答基础科学问题的气候研究提供核心支撑，同时也是政府间气候变化专门委员会第六次评估报告（Intergovernmental Panel on Climate Change Sixth Assessment Report，IPCC-AR6）作者团队的重要参考资源。

CMIP6由世界气候研究计划（World Climate Research Programme，WCRP）下属的耦合模式工作组（Working Group on Coupled Modelling，WGCM）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）主导完成的多轮耦合模式比较工作，其实施依赖地球系统网格联盟（Earth System Grid Federation，ESGF）、环境数据分析中心（Centre for Environmental Data Analysis，CEDA）及众多相关协作项目。原始数据存储于联邦式数据节点集群并支持部分镜像复制，IPCC依赖的多数数据已由德国气候计算中心（German Climate Computing Center，DKRZ）托管的IPCC数据分发中心（IPCC Data Distribution Centre，IPCC DDC）进行长期归档保存。

该项目涵盖全球约120个全球气候模式的模拟试验与约45家科研机构及组织的参与。项目官网：https://pcmdi.llnl.gov/CMIP6。