MIS 5e September sea-ice concentrations and summer SST anomalies (relative to the preindustrial) from HadGEM3 and HadCM3 model simulations

MIS 5e September sea-ice concentrations (SIC) and summer (JFM) SST anomalies, relative to the pre-industrial from the HadGEM3 and HadCM3 climate models were compared to proxy data to investigate how well state of the art model simulations match SIC and SST observations during past periods of warmer-than-present climate. The importance of including Heinrich 11 (H11) meltwater forcing was tested by incorporating different durations of North Atlantic freshwater hosing into the model runs. This dataset includes the netCDF files with the September SICs and summer SST anomalies for four model runs. The LIG run includes no H11 meltwater forcing. The three H11 runs include H11 meltwater forcing for either 250 or 1600 years and presents an average of the last 100 years of each simulation. Full details on the model set-up and parameters are available in Guarino et al. (2023, accepted) for the HadGEM3 simulations and Holloway et al. (2018) for the HadCM3 simulations.

本数据集针对海洋同位素阶段5e（Marine Isotope Stage 5e, MIS 5e）的9月海冰浓度（sea-ice concentrations, SIC）与夏季（JFM，即1-3月）海表面温度（sea surface temperature, SST）异常展开研究，该异常值以工业革命前为基准，数据取自HadGEM3与HadCM3两款气候模式。研究团队将模式模拟结果与代用资料进行对比，以探究当前顶尖气候模式的模拟结果在暖于现代的过去气候时段中，对海冰浓度与海表面温度观测数据的匹配精度。本研究通过在模式运行中设置不同时长的北大西洋淡水注入试验，检验纳入海因里希事件11（Heinrich 11, H11）融水强迫的重要性。本数据集包含4组模式试验的9月海冰浓度与夏季海表面温度异常数据的netCDF格式文件。其中末次间冰期（Last Interglacial, LIG）试验组未纳入H11融水强迫；其余3组H11试验组分别设置250年或1600年的H11融水强迫时长，并取每组模拟最后100年的平均值作为最终结果。关于模式配置与参数的完整细节，可参阅Guarino等人（2023年，已录用）的HadGEM3模式模拟相关研究，以及Holloway等人（2018年）的HadCM3模式模拟相关研究。