MPAS-Albany Land Ice model simulations of Humboldt Glacier, North Greenland, from 2007–2100

This dataset contains model input and output in netCDF format, model code, and analysis scripts for simulations of Humboldt Glacier, North Greenland, through the 21st century (Hillebrand et al., 2022) using the MPAS-Albany Land Ice model (Hoffman et al., 2018). We calibrate parameters controlling basal traction, iceberg calving, and submarine melt against observations from 2007–2017. We then explore the glacier’s sensitivity to climate forcing, iceberg calving, and basal conditions in an ensemble of 24 simulations from 2007–2100. We further explore its sensitivity to uncertainties in ice-shelf melt, bed topography, and calving rate limits in targeted sensitivity experiments. Input files include surface mass balance, ocean thermal forcing, and subglacial runoff forcings provided by ISMIP6 (Nowicki et al., 2020; Slater et al., 2020). Output includes basal traction optimization solutions for the year 2007; annual 2D ice speed, basal shear and driving stresses, and geometry; annual 3D temperature; and grounded, floating, and global mass budgets at every timestep. References: Hillebrand, T. R., Hoffman, M. J., Perego, M., Price, S. F., and Howat, I. M. (2022): The contribution of Humboldt Glacier, northern Greenland, to sea-level rise through 2100 constrained by recent observations of speedup and retreat, The Cryosphere, 16, 4679–4700, https://doi.org/10.5194/tc-16-4679-2022. Hoffman, M. J., Perego, M., Price, S. F., Lipscomb, W. H., Zhang, T., Jacobsen, D., et al. (2018). MPAS-Albany Land Ice (MALI): a variable-resolution ice sheet model for Earth system modeling using Voronoi grids. <em>Geoscientific Model Development</em>, <em>11</em>(9), 3747–3780. https://doi.org/10.5194/gmd-11-3747-2018 Nowicki, S., Goelzer, H., Seroussi, H., Payne, A. J., Lipscomb, W. H., Abe-Ouchi, A., et al. (2020). Experimental protocol for sea level projections from ISMIP6 stand-alone ice sheet models. <em>The Cryosphere</em>, <em>14</em>(7), 2331–2368. https://doi.org/10.5194/tc-14-2331-2020 Slater, D. A., Felikson, D., Straneo, F., Goelzer, H., Little, C. M., Morlighem, M., et al. (2020). Twenty-first century ocean forcing of the Greenland ice sheet for modelling of sea level contribution. <em>The Cryosphere</em>, <em>14</em>(3), 985–1008. https://doi.org/10.5194/tc-14-985-2020本数据集涵盖格陵兰北部洪堡冰川（Humboldt Glacier）21世纪模拟研究所用的netCDF格式模型输入输出文件、模型代码与分析脚本（Hillebrand等，2022），模拟采用MPAS-Albany陆地冰模型（MPAS-Albany Land Ice model，Hoffman等，2018）。 研究基于2007—2017年的观测数据，对控制基底拖曳、冰山崩解及海底消融的参数进行率定。 随后基于2007—2100年的24组集合模拟试验，探究该冰川对气候强迫、冰山崩解及基底条件的敏感性。 进一步针对冰架消融、床层地形及崩解速率限值的不确定性，开展靶向敏感性试验以深入探究其影响。 输入文件包含冰盖模式比较计划第六阶段（ISMIP6，Nowicki等，2020；Slater等，2020）提供的表面质量平衡、海洋热强迫及冰下径流强迫数据。 输出内容包括2007年的基底拖曳优化解；逐年二维冰流速、基底剪切应力与驱动应力及冰川几何形态；逐年三维温度场；以及每个时间步的接地冰、浮冰及全球质量收支数据。 参考文献： 1. Hillebrand, T. R., Hoffman, M. J., Perego, M., Price, S. F., 及 Howat, I. M. (2022): 格陵兰北部洪堡冰川至2100年对海平面上升的贡献——基于近期加速与退缩观测的约束，《冰冻圈（The Cryosphere）》, 16, 4679–4700, https://doi.org/10.5194/tc-16-4679-2022. 2. Hoffman, M. J., Perego, M., Price, S. F., Lipscomb, W. H., Zhang, T., Jacobsen, D. 等 (2018). MPAS-Albany陆地冰模型（MALI）：基于沃罗诺伊网格的地球系统模式可变分辨率冰盖模型。《地球科学模式发展（Geoscientific Model Development）》, 11(9), 3747–3780, https://doi.org/10.5194/gmd-11-3747-2018. 3. Nowicki, S., Goelzer, H., Seroussi, H., Payne, A. J., Lipscomb, W. H., Abe-Ouchi, A. 等 (2020). 冰盖模式比较计划第六阶段（ISMIP6）独立冰盖模型海平面预测实验方案。《冰冻圈（The Cryosphere）》, 14(7), 2331–2368, https://doi.org/10.5194/tc-14-2331-2020. 4. Slater, D. A., Felikson, D., Straneo, F., Goelzer, H., Little, C. M., Morlighem, M. 等 (2020). 二十一世纪格陵兰冰盖海平面贡献模拟所用的海洋强迫数据。《冰冻圈（The Cryosphere）》, 14(3), 985–1008, https://doi.org/10.5194/tc-14-985-2020.