Abstract
BCC-ESM1 is the first version of the Beijing Climate Center’s Earth System Model, and is participating in phase 6 of the Coupled Model Intercomparison Project (CMIP6). The Aerosol Chemistry Model Intercomparison Project (AerChemMIP) is the only CMIP6-endorsed MIP in which BCC-ESM1 is involved. All AerChemMIP experiments in priority 1 and seven experiments in priorities 2 and 3 have been conducted. The DECK (Diagnostic, Evaluation and Characterization of Klima) and CMIP historical simulations have also been run as the entry card of CMIP6. The AerChemMIP outputs from BCC-ESM1 have been widely used in recent atmospheric chemistry studies. To facilitate the use of the BCC-ESM1 datasets, this study describes the experiment settings and summarizes the model outputs in detail. Preliminary evaluations of BCC-ESM1 are also presented, revealing that: the climate sensitivities of BCC-ESM1 are well within the likely ranges suggested by IPCC AR5; the spatial structures of annual mean surface air temperature and precipitation can be reasonably captured, despite some common precipitation biases as in CMIP5 and CMIP6 models; a spurious cooling bias from the 1960s to 1990s is evident in BCC-ESM1, as in most other ESMs; and the mean states of surface sulfate concentrations can also be reasonably reproduced, as well as their temporal evolution at regional scales. These datasets have been archived on the Earth System Grid Federation (ESGF) node for atmospheric chemistry studies.
摘要
BCC-ESM1是中国气象局北京气候中心第一版地球系统模式,参与了第六次耦合模式比较计划(CMIP6)。BCC-ESM1参与的气溶胶化学模式比较计划(AerChemMIP)是CMIP6参与的唯一模式比较子计划。 BCC-ESM1完成了AerChemMIP中所有一级优先级试验,以及优先级为2和3的七个试验。该模式同时完成了CMIP6的入场试验DECK和CMIP历史模拟试验。BCC-ESM1的模拟结果已被广泛用于最近的大气化学研究中。为了方便BCC-ESM1数据集的使用,本文详细介绍了试验设计,总结了模式数据,并对模拟结果进行了初步评估。结果表明:BCC-ESM1的气候敏感度在IPCC AR5建议的可能范围内;尽管存在CMIP5和CMIP6模型中常见的模拟偏差,BCC-ESM1模拟的年平均地表气温和降水的空间结构基本合理;与大多数其他地球系统模式类似,BCC-ESM1模拟的气温在1960年代到1990年代显著偏低;BCC-ESM1能合理再现地表硫酸盐浓度平均状态及其在区域尺度上的时间演变特征。相关数据集已在Earth System Grid Federation上发布,以供大气化学相关研究分析。
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Acknowledgements
This work was jointly supported by the National Key Research and Development Program of China (Grant No. 2016YFA0602103), the National Key Research and Development Program of China CERC-WET Project (Grant No. 2018YFE0196000) and the National Natural Science Foundation of China (Grant No. 41805063).
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The data for the BCC-ESM1 simulations (Zhang et al., 2019) are available on the ESGF nodes (https://esgfnode. llnl.gov/projects/cmip6/). The dataset is in Network Common Data Form (NetCDF), version 4.
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Zhang, J., Wu, T., Zhang, F. et al. BCC-ESM1 Model Datasets for the CMIP6 Aerosol Chemistry Model Intercomparison Project (AerChemMIP). Adv. Atmos. Sci. 38, 317–328 (2021). https://doi.org/10.1007/s00376-020-0151-2
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DOI: https://doi.org/10.1007/s00376-020-0151-2