piClim-370-NAE126aer data produced by the EC-Earth3-AerChem model for the Regional Aerosol Model Intercomparison Project (RAMIP)

This record contains data for the piClim-370-NAE126aer experiment simulations from the Regional Aerosol Model Intercomparison Project (RAMIP), produced using EC-Earth3-AerChem. It contains NetCDF output for a set of experiments with anthropogenic emissions for the year 2050 and fixed, pre-industrial, sea surface temperatures, sea ice extent, and land use. For a full description of the experiments, see: https://gmd.copernicus.org/articles/16/4451/2023/.

The piClim-370-NAE126aer experiment is a fixed sea surface temperature (SST) experiment with 1850 SSTs and sea ice concentrations, following the RFMIP piClim experiment designs. Aerosol and precursor emissions (SO2, black carbon and organic carbon) over North America and Europe are taken from year 2050 of SSP1-2.6, while all other anthropogenic emissions and land use are taken from SSP3-7.0 At least 30 years are requested. North America and Europe are the regions bounded by 20W, 45E, 35N, and 70N, and 150W, 45W, 25N 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
------------
EC-Earth3-AerChem: a global climate and Earth system model developed by a European consortium of meteorological services, research institutes, and high-performance computing centers.
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.
RFMIP: The Radiative Forcing Model Intercomparison Project.

本数据集包含区域气溶胶模式比对项目（Regional Aerosol Model Intercomparison Project，RAMIP）下piClim-370-NAE126aer试验的模拟数据，由EC-Earth3-AerChem模式生成。数据集包含多组试验的网络通用数据格式（NetCDF）输出，这些试验采用2050年人为排放清单，并固定采用工业化前的海表温度、海冰范围与土地利用模式。如需了解试验的完整细节，请参阅：https://gmd.copernicus.org/articles/16/4451/2023/。

piClim-370-NAE126aer试验属于固定海表温度（SST）试验，采用1850年的海表温度与海冰浓度数据，遵循辐射强迫模式比对项目（Radiative Forcing Model Intercomparison Project，RFMIP）的piClim试验设计框架。北美与欧洲区域的气溶胶及其前体物排放（包括二氧化硫、黑碳与有机碳）采用SSP1-2.6情景下2050年的排放清单，其余所有人为排放与土地利用模式则取自SSP3-7.0情景。试验要求至少连续运行30年。本次研究涉及的北美与欧洲区域范围分别为：西经20°至东经45°、北纬35°至70°，以及西经150°至西经45°、北纬25°至70°。

本模拟均以第六次耦合模式比对项目（Coupled Model Intercomparison Project，CMIP6）的历史试验结果作为初始场。本试验采用情景模式比对项目（Scenario Model Intercomparison Project，ScenarioMIP）中为SSP3-7.0与SSP1-2.6情景设计的人为排放清单。所有试验均采用SSP3-7.0情景框架，仅针对区域气溶胶及其前体物排放采用SSP1-2.6情景的排放数据进行扰动，遵循RAMIP试验规程。数据集仅提供CMIP6变量子集，且严格遵循CMIP6的变量定义标准。部分三维变量的垂直分辨率相较于CMIP6标准有所降低，这类变量将采用RAMIP数据需求中规定的新变量名进行标识，详情请参阅：https://gmd.copernicus.org/articles/16/4451/2023/。

术语缩写说明
----------------
EC-Earth3-AerChem：由欧洲气象服务机构、科研院所与高性能计算中心组成的联盟开发的全球气候与地球系统模式。
SSP1-2.6：基于共享社会经济路径（Shared Socioeconomic Pathway，SSP）1的试验情景，该路径对应气候变化减缓与适应挑战较低的发展路径，搭配典型浓度路径（Representative Concentration Pathway，RCP）2.6，即2100年辐射强迫为2.6 W/m²的未来气候情景。
SSP3-7.0：基于共享社会经济路径SSP3的试验情景，该路径对应气候变化减缓与适应均面临较高挑战的发展路径，搭配典型浓度路径RCP7.0，即2100年辐射强迫为7.0 W/m²的未来气候情景。
ScenarioMIP：情景模式比对项目（Scenario Model Intercomparison Project），该项目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项目（Coupled Model Intercomparison Project），是全球气候模式研发团队共同参与的国际合作项目。
RFMIP：辐射强迫模式比对项目（Radiative Forcing Model Intercomparison Project）。