IPCC DDC: MOHC HadGEM3-GC31-LL model output prepared for CMIP6 LUMIP

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.LUMIP.MOHC.HadGEM3-GC31-LL' 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 HadGEM3-GC3.1-N96ORCA1 climate model, released in 2016, includes the following components: aerosol: UKCA-GLOMAP-mode, atmos: MetUM-HadGEM3-GA7.1 (N96; 192 x 144 longitude/latitude; 85 levels; top level 85 km), land: JULES-HadGEM3-GL7.1, ocean: NEMO-HadGEM3-GO6.0 (eORCA1 tripolar primarily 1 deg with meridional refinement down to 1/3 degree in the tropics; 360 x 330 longitude/latitude; 75 levels; top grid cell 0-1 m), seaIce: CICE-HadGEM3-GSI8 (eORCA1 tripolar primarily 1 deg; 360 x 330 longitude/latitude). The model was run by the Met Office Hadley Centre, Fitzroy Road, Exeter, Devon, EX1 3PB, UK (MOHC) in native nominal resolutions: aerosol: 250 km, atmos: 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——本数据集为国际协同推进的耦合模式比较计划第六阶段（CMIP6；详见《Geoscientific Model Development》（简称GMD）专刊：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，同时也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）的作者团队提供了核心资源。

耦合模式比较计划第六阶段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）统筹协调。本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）主导开展的多轮计划，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）及众多相关配套活动完成落地实施。原始数据存储于联邦数据节点集群并实现部分复制，IPCC所依赖的多数数据集将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。本项目涵盖了全球约120个全球气候模式及45家海内外科研机构与组织的模拟成果。

摘要：本数据集包含IPCC AR6第一工作组（WGI）作者所使用的原始数据集子集，该子集源自ESGF平台发布的`CMIP6.LUMIP.MOHC.HadGEM3-GC31-LL`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"。

2016年发布的HadGEM3-GC3.1-N96ORCA1气候模式包含以下分量模块：
1. 气溶胶模块：UKCA-GLOMAP-mode
2. 大气模块：MetUM-HadGEM3-GA7.1（分辨率为N96，经纬度网格尺寸为192×144，垂直层数85层，顶层高度85 km）
3. 陆面模块：JULES-HadGEM3-GL7.1
4. 海洋模块：NEMO-HadGEM3-GO6.0（eORCA1三极网格，基础分辨率约1°，热带区域经向分辨率细化至1/3°；经纬度网格尺寸为360×330，垂直层数75层，表层网格深度范围为0~1 m）
5. 海冰模块：CICE-HadGEM3-GSI8（eORCA1三极网格，基础分辨率约1°；经纬度网格尺寸为360×330）

该模式由英国德文郡埃克塞特市菲茨罗伊路的英国气象局哈德利中心（Met Office Hadley Centre, MOHC）以原生标称分辨率运行：气溶胶模块250 km，大气模块250 km，陆面模块250 km，海洋模块100 km，海冰模块100 km。