ECMWF ECMWF-IFS-HR model output prepared for CMIP6 HighResMIP spinup-1950

Coupled Model Intercomparison Project Phase 6 (CMIP6) datasets: These data include all datasets published for 'CMIP6.HighResMIP.ECMWF.ECMWF-IFS-HR.spinup-1950' 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 ECMWF-IFS-HR (25 km atmosphere and 25 km ocean) climate model, released in 2017, includes the following components:
atmos: IFS (IFS CY43R1, Tco399, cubic octahedral reduced Gaussian grid equivalent to 1600 x 800 longitude/latitude; 91 levels; top level 0.01 hPa), land: HTESSEL (as implemented in IFS CY43R1), ocean: NEMO3.4 (NEMO v3.4; ORCA025 tripolar grid; 1442 x 1021 longitude/latitude; 75 levels; top grid cell 0-1 m), seaIce: LIM2 (LIM v2; ORCA025 tripolar grid; 1442 x 1021 longitude/latitude).
The model was run by the European Centre for Medium-Range Weather Forecasts, Reading RG2 9AX, UK (ECMWF) in native nominal resolutions: atmos: 25 km, land: 25 km, ocean: 25 km, seaIce: 25 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.

耦合模型比较计划第六阶段（Coupled Model Intercomparison Project Phase 6，CMIP6）数据集：本数据集涵盖所有遵循数据参考语法（Data Reference Syntax）模板`mip_era.activity_id.institution_id.source_id.experiment_id.member_id.table_id.variable_id.grid_label.version`发布的`CMIP6.HighResMIP.ECMWF.ECMWF-IFS-HR.spinup-1950`相关数据集。

2017年发布的ECMWF-IFS-HR（25公里大气与25公里海洋）气候模式包含以下组成模块：
大气模块：IFS（IFS CY43R1，Tco399，立方八面体缩减高斯网格，等效分辨率对应1600×800经纬度格点；共91层，顶层气压为0.01百帕）；
陆面模块：HTESSEL（集成于IFS CY43R1版本中）；
海洋模块：NEMO3.4（NEMO v3.4；ORCA025三极网格，1442×1021经纬度格点；共75层，顶层网格深度范围为0~1米）；
海冰模块：LIM2（LIM v2；ORCA025三极网格，1442×1021经纬度格点）。

该模式由位于英国雷丁（邮编RG2 9AX）的欧洲中期天气预报中心（ECMWF）以原生标称分辨率运行：大气模块分辨率25公里，陆面模块25公里，海洋模块25公里，海冰模块25公里。

项目背景：本数据集作为国际协作的耦合模型比较计划第六阶段（CMIP6，详见《Geoscientific Model Development》特刊：http://www.geosci-model-dev.net/special_issue590.html）的产出成果生成。此模拟数据为解答核心科学问题的气候研究提供基础支撑，同时可为政府间气候变化专门委员会第六次评估报告（IPCC-AR6）的撰稿作者提供数据资源。

耦合模型比较计划第六阶段（CMIP6）由世界气候研究计划（WCRP）下属的耦合建模工作组（WGCM）统筹协调。第六阶段继承了此前由气候模型诊断与比较计划（PCMDI）主导的前几阶段工作，依托地球系统网格联盟（ESGF）与环境数据分析中心（CEDA）及众多相关协作活动完成落地实施。原始数据托管并部分复制于联邦化的数据节点集群，IPCC所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）进行长期保存归档。

该项目汇聚了全球约120个全球气候模式与约45家科研机构及组织的模拟成果。项目官网：https://pcmdi.llnl.gov/CMIP6。