NASA-GISS GISS-E2-2-G model output prepared for CMIP6 CMIP historical

Coupled Model Intercomparison Project Phase 6 (CMIP6) datasets: These data include all datasets published for 'CMIP6.CMIP.NASA-GISS.GISS-E2-2-G.historical' 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 GISS-E2-2-G climate model, released in 2019, includes the following components:
aerosol: varies with physics-version (p==1 none, p==3 OMA, p==4 TOMAS, p==5 MATRIX), atmos: GISS-E2.2 (High-top, 2 x 2.5 degrees; 144 x 90 longitude/latitude; 102 levels; top level 0.002 hPa), atmosChem: varies with physics-version (p==1 Non-interactive, p>1 GPUCCINI), land: GISS LSM, landIce: Fixed, ocean: GISS Ocean (GO1, 1 degree; 360 x 180 longitude/latitude; 40 levels; top grid cell 0-10m), seaIce: GISS SI.
The model was run by the Goddard Institute for Space Studies, New York, NY 10025, USA (NASA-GISS) in native nominal resolutions: aerosol: 250 km, atmos: 250 km, atmosChem: 250 km, land: 250 km, landIce: 250 km, ocean: 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：本数据集涵盖所有遵循`mip_era.activity_id.institution_id.source_id.experiment_id.member_id.table_id.variable_id.grid_label.version`模板构建完整数据参考语法（Data Reference Syntax）的`CMIP6.CMIP.NASA-GISS.GISS-E2-2-G.historical`相关已发布数据集。

2019年发布的GISS-E2-2-G气候模式包含以下组分：气溶胶模块随物理版本动态配置（p=1时无额外配置，p=3对应OMA方案，p=4对应TOMAS方案，p=5对应MATRIX方案）；大气模块采用GISS-E2.2框架（高顶分辨率模式，经向/纬向网格为144×90，分辨率2°×2.5°，共102个垂直层，顶层气压为0.002 hPa）；大气化学模块随物理版本而异（p=1为非交互式方案，p>1时采用GPUCCINI方案）；陆面模块采用GISS陆面模式（LSM）；陆冰模块为固定配置；海洋模块采用GISS海洋模式（GO1，分辨率1°，经向/纬向网格为360×180，共40个垂直层，顶层网格水深范围0~10 m）；海冰模块采用GISS海冰模式（SI）。

该模式由美国纽约州10025区域戈达德太空研究所（NASA-GISS）以原始标称分辨率运行，各组分分辨率如下：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、陆冰模块250 km、海洋模块100 km、海冰模块100 km。

项目背景：本数据集作为国际协同推进的耦合模式比较计划第六阶段（CMIP6；详见《地球系统模型发展》特刊：http://www.geosci-model-dev.net/special_issue590.html）的产出成果生成。该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，同时可作为政府间气候变化专门委员会第六次评估报告（IPCC-AR6）撰稿人的参考资源。

CMIP6由耦合建模工作组（Working Group on Coupled Modelling，WGCM）作为世界气候研究计划（World Climate Research Programme，WCRP）的组成部分协调推进。第六阶段继承了此前由气候模式诊断与比较计划（Program for Climate Model Diagnosis and Intercomparison，PCMDI）主导完成的多轮前期计划，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项目落地。原始数据托管于联邦化数据节点集群并进行部分副本存储，IPCC依赖的绝大多数数据已由德国气候计算中心（Deutsches Klimarechenzentrum，DKRZ）托管的IPCC数据分发中心（IPCC Data Distribution Centre，IPCC DDC）完成长期归档保存。

该项目汇集了全球约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。