NASA-GISS GISS-E2.1G model output prepared for CMIP6 AerChemMIP histSST-piN2O

Coupled Model Intercomparison Project Phase 6 (CMIP6) datasets: These data include all datasets published for 'CMIP6.AerChemMIP.NASA-GISS.GISS-E2-1-G.histSST-piN2O' 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-E2.1G 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-E2.1 (2.5x2 degree; 144 x 90 longitude/latitude; 40 levels; top level 0.1 hPa), atmosChem: Varies with physics-version (p==1 Non-interactive, p>1 GPUCCINI), land: GISS LSM, ocean: GISS Ocean (GO1, 1 degree; 360 x 180 longitude/latitude; 40 levels; top grid cell 0-10 m), 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, ocean: 100 km, seaIce: 250 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：本数据集包含所有遵循“mip_era.activity_id.institution_id.source_id.experiment_id.member_id.table_id.variable_id.grid_label.version”完整数据参考语法模板发布的“CMIP6.AerChemMIP.NASA-GISS.GISS-E2-1-G.histSST-piN2O”相关数据集。

于2019年发布的GISS-E2.1G气候模型包含以下组分：气溶胶模块随物理版本不同而有所差异（p==1时无气溶胶模块，p==3时采用OMA方案，p==4时采用TOMAS方案，p==5时采用MATRIX方案）；大气模块为GISS-E2.1，分辨率为2.5°×2°，经纬度网格尺寸为144×90，共40个垂直层，顶层气压为0.1 hPa；大气化学模块同样随物理版本变化（p==1时为非交互式模式，p>1时采用GPUCCINI方案）；陆面模块采用GISS陆面模式（GISS LSM）；海洋模块为GISS海洋模式（GO1），分辨率为1°，经纬度网格尺寸为360×180，共40个垂直层，顶层网格水深范围为0~10 m；海冰模块采用GISS海冰模式（GISS SI）。

该模型由美国纽约州纽约市戈达德太空研究所（NASA-GISS）以原生标称分辨率运行，各组分的原生分辨率分别为：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、海洋模块100 km、海冰模块250 km。

本项目说明：本数据集作为国际协调开展的耦合模型比较计划第六阶段（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，其模拟数据可为解答核心科学问题的气候研究提供支撑，同时可供政府间气候变化专门委员会第六次评估报告（IPCC-AR6）的作者使用。

CMIP6由世界气候研究计划（World Climate Research Programme，WCRP）下属的耦合模拟工作组（Working Group on Coupled Modelling，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（Program for Climate Model Diagnosis and Intercomparison，PCMDI）主导开展的多轮计划，依托地球系统网格联合会（Earth System Grid Federation，ESGF）、环境数据分析中心（Centre for Environmental Data Analysis，CEDA）及众多相关协作活动完成落地实施。原始数据托管于分布式数据节点联盟并实现部分复制，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。

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