SSP370-NAE126aer data produced by the NorESM2-LM model for the Regional Aerosol Model Intercomparison Project (RAMIP)

This record contains data for the SSP370-NAE126aer experiment simulations from the Regional Aerosol Model Intercomparison Project (RAMIP), produced using NorESM2-LM. It contains NetCDF output from coupled transient simulations with regional aerosol reductions over East Asia. For a full description of the experiments, see: https://gmd.copernicus.org/articles/16/4451/2023/.

The SSP370-NAE126aer coupled transient experiment runs from January 2015 to at least February 2051. Aerosol and precursor emissions (sulphur dioxide, black carbon and organic carbon) over North America and Europe are taken from SSP1-2.6, while all other anthropogenic emissions and land use follow SSP3-7.0. North America and Europe are the regions bounded by 150W, 45W, 25N and 70N, and 20W, 45E, 35N, and 70N.

The simulations are initialised from the CMIP6 historical experiment. Anthropogenic emissions designed for the ScenarioMIP experiments SSP3-7.0 and SSP1-2.6 are used. All experiments follow SSP3-7.0, with perturbations to regional aerosol and precursor emissions using SSP1-2.6 emissions, following the RAMIP protocol. Data are provided for a subset of CMIP6 variables, following their CMIP6 definitions. Some 3D variables are produced at reduced vertical resolution compared to CMIP6. These are identified with new variable names, as set out in the RAMIP data request: https://gmd.copernicus.org/articles/16/4451/2023/

Acronyms
------------
NorESM2-LM: The Norwegian Earth System Model version 2 (NorESM2) is the second generation of the coupled Earth system model (ESM) developed by the Norwegian Climate Center.
SSP1-2.6: experiment based on Shared Socioeconomic Pathway SSP1 with low climate change mitigation and adaptation challenges and RCP2.6, a future pathway with a radiative forcing of 2.6 W/m2 in the year 2100.
SSP3-7.0: experiment based on Shared Socioeconomic Pathway SSP3 which is characterised by high challenges to both mitigation and adaptation and RCP7.0, a future pathway with a radiative forcing of 7.0 W/m2 in the year 2100.
ScenarioMIP: the Scenario Model Intercomparison Project simulates climate outcomes based on alternative plausible future scenarios.
CMIP6: is the sixth phase of the Coupled Model Intercomparison Project, a global collaboration of climate modellers.

本数据集包含区域气溶胶模式比对计划（Regional Aerosol Model Intercomparison Project, RAMIP）中采用NorESM2-LM模式开展的SSP370-NAE126aer实验模拟数据，涵盖东亚区域气溶胶减排耦合瞬变模拟的NetCDF输出结果。如需获取实验的完整说明，请参阅：https://gmd.copernicus.org/articles/16/4451/2023/。

SSP370-NAE126aer耦合瞬变实验的模拟时段为2015年1月至2051年2月及以后。北美与欧洲区域的气溶胶及其前体物排放（二氧化硫、黑碳与有机碳）采用SSP1-2.6情景下的排放数据，其余人为排放与土地利用则遵循SSP3-7.0情景。北美与欧洲的区域范围分别为：150°W至45°W、25°N至70°N，以及20°W至45°E、35°N至70°N。

本系列模拟均以CMIP6历史实验为初始场，采用情景模式比对计划（ScenarioMIP）预设的SSP3-7.0与SSP1-2.6情景人为排放数据。所有实验均遵循SSP3-7.0情景框架，并依据RAMIP协议，采用SSP1-2.6的排放数据对区域气溶胶及前体物排放进行扰动修正。数据提供CMIP6变量子集，且遵循CMIP6的变量定义标准。部分三维变量的垂直分辨率低于CMIP6标准，这类变量已通过新增变量名进行标识，具体规则详见RAMIP数据需求文档：https://gmd.copernicus.org/articles/16/4451/2023/。

缩写说明
------------
NorESM2-LM：挪威地球系统模式2（NorESM2）是挪威气候中心开发的第二代耦合地球系统模式（Earth System Model, ESM）。
SSP1-2.6：基于共享社会经济路径SSP1的实验情景，该路径对应较低的气候变化减缓与适应挑战，配合2100年辐射强迫为2.6 W/m²的RCP2.6未来路径。
SSP3-7.0：基于共享社会经济路径SSP3的实验情景，该路径的气候变化减缓与适应均面临较高挑战，配合2100年辐射强迫为7.0 W/m²的RCP7.0未来路径。
ScenarioMIP：情景模式比对计划，旨在基于多种合理的未来情景模拟气候响应结果。
CMIP6：第六次耦合模式比对计划（Coupled Model Intercomparison Project Phase 6, CMIP6），是全球气候模式研究者的协同合作项目。