IPCC DDC: NOAA-GFDL GFDL-ESM4 model output prepared for CMIP6 C4MIP

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.C4MIP.NOAA-GFDL.GFDL-ESM4' 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 GFDL-ESM4 climate model, released in 2018, includes the following components: aerosol: interactive, atmos: GFDL-AM4.1 (Cubed-sphere (c96) - 1 degree nominal horizontal resolution; 360 x 180 longitude/latitude; 49 levels; top level 1 Pa), atmosChem: GFDL-ATMCHEM4.1 (full atmospheric chemistry), land: GFDL-LM4.1, landIce: GFDL-LM4.1, ocean: GFDL-OM4p5 (GFDL-MOM6, tripolar - nominal 0.5 deg; 720 x 576 longitude/latitude; 75 levels; top grid cell 0-2 m), ocnBgchem: GFDL-COBALTv2, seaIce: GFDL-SIM4p5 (GFDL-SIS2.0, tripolar - nominal 0.5 deg; 720 x 576 longitude/latitude; 5 layers; 5 thickness categories). The model was run by the National Oceanic and Atmospheric Administration, Geophysical Fluid Dynamics Laboratory, Princeton, NJ 08540, USA (NOAA-GFDL) in native nominal resolutions: aerosol: 100 km, atmos: 100 km, atmosChem: 100 km, land: 100 km, landIce: 100 km, ocean: 50 km, ocnBgchem: 50 km, seaIce: 50 km.

项目：耦合模型比对项目第六阶段（Coupled Model Intercomparison Project Phase 6, CMIP6）数据集——本数据集为国际协同开展的CMIP6的产出成果，详见《Geoscientific Model Development》（GMD）特刊：http://www.geosci-model-dev.net/special_issue590.html。该模拟数据为解答核心科学问题的气候研究提供支撑依据，同时为政府间气候变化专门委员会（Intergovernmental Panel on Climate Change, IPCC）第六次评估报告（Sixth Assessment Report, AR6，简称IPCC-AR6）的撰稿作者提供数据资源支撑。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）统筹协调。第六阶段项目依托此前由气候模式诊断与比对计划（Program for Climate Model Diagnosis and Intercomparison, PCMDI）主导完成的前序阶段建设，通过地球系统网格联盟（Earth System Grid Federation, ESGF）与环境数据分析中心（Centre for Environmental Data Analysis, CEDA），并联合多项相关协作活动完成项目实施。原始数据托管于联邦化数据节点集群并实现部分副本分发；IPCC所依赖的绝大多数数据已交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。本项目涵盖了全球范围内约120套全球气候模式与45家科研机构及组织开展的模拟实验。

数据集概述：本数据集包含IPCC AR6第一工作组（Working Group I, WGI）撰稿作者所使用的子集数据，原始数据集以标识字符串"CMIP6.C4MIP.NOAA-GFDL.GFDL-ESM4"在ESGF平台发布，其完整数据参考语法遵循模板："mip_era.activity_id.institution_id.source_id.experiment_id.member_id.table_id.variable_id.grid_label.version"。GFDL-ESM4气候模式于2018年正式发布，其组成模块如下：气溶胶模块：交互式气溶胶方案；大气模块：GFDL-AM4.1（采用立方球面格点（c96），名义水平分辨率为1°；经纬度网格尺寸为360×180；共49层大气垂直结构；顶层气压为1帕）；大气化学模块：GFDL-ATMCHEM4.1（搭载完整大气化学模块）；陆面模块：GFDL-LM4.1；陆冰模块：GFDL-LM4.1；海洋模块：GFDL-OM4p5（基于GFDL-MOM6模式框架，采用三极格点，名义分辨率0.5°；经纬度网格尺寸为720×576；共75层垂直结构；表层网格单元水深范围为0~2米）；海洋生物地球化学模块：GFDL-COBALTv2；海冰模块：GFDL-SIM4p5（基于GFDL-SIS2.0模式框架，采用三极格点，名义分辨率0.5°；经纬度网格尺寸为720×576；共5层垂直结构；包含5个海冰厚度分类）。本模式由美国新泽西州普林斯顿市（邮编08540）国家海洋和大气管理局地球物理流体动力学实验室（National Oceanic and Atmospheric Administration, Geophysical Fluid Dynamics Laboratory, NOAA-GFDL）以各模块名义原生分辨率开展模拟：气溶胶模块：100公里；大气模块：100公里；大气化学模块：100公里；陆面模块：100公里；陆冰模块：100公里；海洋模块：50公里；海洋生物地球化学模块：50公里；海冰模块：50公里。