Reconstructing atmospheric circulation and sea-ice extent in the West Antarctic over the past 200 years using data assimilation

This archive contains the climate reconstruction of surface changes in the Antarctic over 1800–2000 CE by combing the isotope-enabled Community Earth System Model with ice core and tree-ring width records through data assimilation. For a complete description of the experimental design, see the associated publication: Dalaiden, Q., Goosse, H., Rezsohazy, J. and Thomas, E.R. (2021). Reconstructing atmospheric circulation and sea-ice extent in the West Antarctic over the past 200 years using data assimilation, Climate Dynamics. Each NetCDF file corresponds to one variable. For each variable, along with the reconstruction, an estimation of the uncertainty is provided. All fields are anomalies relative to the 1941–1990 CE period. The variables included in the archive are: ASL-index: Amundsen Sea Low index<br> BAS-SIE: Sea-ice extent averaged over the Bellingshausen and Amundsen Sea sector<br> Ross-SIE: Sea-ice extent averaged over the Ross Sea sector<br> SAM-index: Southern Annular Mode index<br> SAT: Near-surface air temperature<br> SIC: Sea-ice concentration<br> SLP: Sea-level pressure<br> SNOW-ACC: Snow accumulation<br> 500hpa-ZG: 500-hPa geopotential height<br> 500hpa-AT: 500-hPa atmospheric temperature<br> 700hpa-AT: 700-hPa atmospheric temperature<br> 850hpa-AT: 850-hPa atmospheric temperature<br> 500hpa-Uwind: 500-hPa zonal winds<br> 700hpa-Uwind: 700-hPa zonal winds<br> 850hpa-Uwind: 850-hPa zonal winds<br> 500hpa-Vwind: 500-hPa meridional winds<br> 700hpa-Vwind: 700-hPa meridional winds<br> 850hpa-Vwind: 850-hPa meridional winds Please contact Quentin Dalaiden ([e-mail]) for more information.本数据集存档包含公元1800年至2000年南极地表变化的气候重建结果，通过将带同位素模拟功能的通用地球系统模式（isotope-enabled Community Earth System Model）与冰芯、树轮宽度记录通过数据同化方法融合得到。如需了解实验设计的完整细节，请参阅相关学术论文：Dalaiden, Q., Goosse, H., Rezsohazy, J. 及 Thomas, E.R.（2021）。《基于数据同化方法重建过去200年西南极大气环流与海冰范围》，《气候动力学（Climate Dynamics）》。 每个NetCDF文件对应一个变量。针对每个变量，除重建结果外，还提供了不确定性估计值。所有场均为相对于公元1941年至1990年的距平值。本存档包含的变量如下： ASL-index：阿蒙森海低压指数（Amundsen Sea Low index） BAS-SIE：别林斯高晋海与阿蒙森海海域平均海冰范围 Ross-SIE：罗斯海海域平均海冰范围 SAM-index：南极环状模指数（Southern Annular Mode index） SAT：近地表气温 SIC：海冰浓度 SLP：海平面气压 SNOW-ACC：降雪累积量 500hpa-ZG：500百帕位势高度 500hpa-AT：500百帕大气温度 700hpa-AT：700百帕大气温度 850hpa-AT：850百帕大气温度 500hpa-Uwind：500百帕纬向风 700hpa-Uwind：700百帕纬向风 850hpa-Uwind：850百帕纬向风 500hpa-Vwind：500百帕经向风 700hpa-Vwind：700百帕经向风 850hpa-Vwind：850百帕经向风 如需获取更多信息，请联系Quentin Dalaiden（邮箱：[e-mail]）。