IPCC DDC: CNRM-CERFACS CNRM-CM6-1 model output prepared for CMIP6 ScenarioMIP

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.ScenarioMIP.CNRM-CERFACS.CNRM-CM6-1' 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.

项目：耦合模式比较计划第六阶段（Coupled Model Intercomparison Project Phase 6, CMIP6）数据集——本批数据为国际协调推进的耦合模式比较计划第六阶段（CMIP6；详见《地球科学模型开发》特刊：http://www.geosci-model-dev.net/special_issue590.html）的产出成果。该模拟数据为解答核心科学问题的气候研究提供了基础支撑，同时可为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）的撰写者提供研究资源。

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）主导开展的多阶段项目，并依托地球系统网格联盟（Earth System Grid Federation, ESGF）、环境数据分析中心（Centre for Environmental Data Analysis, CEDA）及众多配套活动完成落地实施。

原始数据托管于联邦化数据节点集群并实现部分镜像复制，IPCC所依赖的绝大多数数据将由德国气候计算中心（German Climate Computing Center, DKRZ）运营的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个全球气候模式及45家科研机构与组织的模拟试验数据。

概述：本数据集包含IPCC AR6第一工作组作者所使用的、原初发布于ESGF的`CMIP6.ScenarioMIP.CNRM-CERFACS.CNRM-CM6-1`数据集子集，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`。

CNRM-CM6-1气候模型于2017年发布，其组成模块如下：
- 气溶胶模块：采用TACTIC_v2方案计算得到的预设逐月场；
- 大气模块：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°间每条纬度圈含256个网格点，向南北纬88.9°逐步缩减至每条纬度圈20个网格点；共91层垂直层次，顶层高度为78.4 km）；
- 大气化学模块：OZL_v2；
- 陆面模块：Surfex 8.0c；
- 海洋模块：Nemo 3.6（eORCA1三极网格，基础分辨率约1°；经纬度网格尺寸为362×294；共75层垂直层次，顶层网格单元深度范围为0~1 m）；
- 海冰模块：Gelato 6.1。

该模型由法国图卢兹的法国国家气象研究中心（Centre National de Recherches Meteorologiques, Toulouse 31057, France）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, Toulouse 31057, France，合称CNRM-CERFACS）以原始名义分辨率运行，各模块分辨率如下：
- 气溶胶、大气、大气化学、陆面模块：250 km；
- 海洋、海冰模块：100 km。