Abstract
The outputs of the Chinese Academy of Sciences (CAS) Flexible Global Ocean-Atmosphere-Land System (FGOALS-f3-L) model for the decadal climate prediction project (DCPP) of the Coupled Model Intercomparison Project Phase 6 (CMIP6) are described in this paper. The FGOALS-f3-L was initialized through the upgraded, weakly coupled data assimilation scheme, referred to as EnOI-IAU, which assimilates observational anomalies of sea surface temperature (SST) and upper-level (0–1000-m) ocean temperature and salinity profiles into the coupled model. Then, nine ensemble members of 10-year hindcast/forecast experiments were conducted for each initial year over the period of 1960–2021, based on initial conditions produced by three initialization experiments. The hindcast and forecast experiments follow the experiment designs of the Component-A and Component-B of the DCPP, respectively. The decadal prediction output datasets contain a total of 44 monthly mean atmospheric and oceanic variables. The preliminary evaluation indicates that the hindcast experiments show significant predictive skill for the interannual variations of SST in the north Pacific and multi-year variations of SST in the subtropical Pacific and the southern Indian Ocean.
摘 要
CMIP6年代际气候预测计划(DCPP)是第六次国际耦合模式比较计划(CMIP6)的子计划之一,其目标是利用多模式开展气候系统年代际预测、可预测性和变率机制研究。本文介绍了中国科学院大气物理研究所耦合气候系统模式CAS FGOALS-f3-L参加CMIP6 DCPP年代际回报试验(dcppA-hindcast)和预报试验(dcppB-forecast)的试验设置、数据描述及使用说明。CAS FGOALS-f3-L通过改进的弱耦合资料同化方案EnOI-IAU完成初始化,该方案将观测的海表温度(SST)与海洋上层(0至1000米)温度、盐度廓线资料同化进耦合模式中。基于3组同化试验产生的初始条件,按照DCPP试验标准,完成1960-2021年每一年11月起报、预测10年的年代际回报及预报试验,每次起报包括9组成员。年代际预测输出数据集共包含44个月平均大气和海洋变量。初步评估表明,CAS FGOALS-f3-L对北太平洋海温、副热带太平洋和南印度洋海温的年际至多年际变化具有较好的预测能力。
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Data availability statement
The data that support the findings of this study are available from https://esgf-node.llnl.gov/projects/cmip6/. The HadCRUT.5.0.1.0 dataset can be downloaded from https://www.metoffice.gov.uk/hadobs/hadcrut5/data/current/down-load.html. The GPCC dataset can be downloaded from https://psl.noaa.gov/data/gridded/data.gpcc.html. The ERSST dataset can be downloaded from https://www.ncei.noaa.gov/pub/data/cmb/ersst/v5/netcdf/. The HadSLP2 dataset can be downloaded from https://www.metoffice.gov.uk/hadobs/hadslp2/.
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Acknowledgements
This work is jointly supported by National Key Research and Development Program of China (Grant No. 2018YFA0606300), the NSFC (Grant No. 42075163), the NSFC BSCTPES project (Grant No. 41988101), and the NSFC (Grant No. 42205039). This work is also supported by the Jiangsu Collaborative Innovation Center for Climate Change and the National Key Scientific and Technological Infrastructure project “Earth System Science Numerical Simulator Facility” (EarthLab).
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Hu, S., Wu, B., Wang, Y. et al. CAS FGOALS-f3-L Model Datasets for CMIP6 DCPP Experiment. Adv. Atmos. Sci. 40, 1911–1922 (2023). https://doi.org/10.1007/s00376-023-2122-x
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DOI: https://doi.org/10.1007/s00376-023-2122-x