Seasonal evolution of basal conditions within Russell sector, West Greenland, inverted from satellite observations of surface flow
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An annual set of model-inferred basal and surface properties of ice flow at Russell Gletcher sector in Western Greenland with half-month temporal resolution. Derived using the Elmer/Ice ice-flow model by inversion of satellite-observed ice surface velocity (10.5281/zenodo.5535532). The details on the data creatoin can be found in 10.5194/tc-15-5675-2021 . Dataset contains 24 independent NetCDF files (one per 2-weeks time step) with:<br> * alpha - inverted be model basal friction coefficient in log10 (log10(MPa m-1 a)<br> * base - basal topography altitude (m)<br> * lithk - ice thickness (m)<br> * orog - surface altitude (m)<br> * strbasemag - magnitude of basal friction tb (MPa)<br> * xvelbase, yvelbase, zvelbase - 3D basal velocity (m/yr)<br> * xvelmean, yvelmean - vertically average mean horizontal velocity (m/yr)<br> * xvelsurf, yvelsurf, zvelsurf - 3D surface velocity (m/yr)<br> * n - effective pressure (MPa) The additional WinterMeanState NetCDF file (inversion from the mean velocity of january, Febriary, Mars) contains the same set of variables (except the effective pressure), and in addition contains the <em>As</em> Weertman sliding coeffitient. The results have been interpolated from the native unstructured model grid to the regular grid used for the observed velocity (10.5281/zenodo.5535624).
本数据集为格陵兰西部罗素冰川（Russell Glacier）区域的冰流基底与表面属性年度数据集，时间分辨率为半月，所有属性均由模型推演得到。数据集基于Elmer/Ice冰流模型，通过反演卫星观测的冰面速度生成，关联DOI：10.5281/zenodo.5535532。该数据集的详细构建细节可参考文献DOI：10.5194/tc-15-5675-2021。 本数据集包含24个独立NetCDF文件（每两周对应一个时间步），内含以下变量： * alpha：以log10标度表示的模型反演基底摩擦系数（单位：log10(MPa·m⁻¹·a⁻¹)） * base：基底地形海拔高度（单位：m） * lithk：冰厚（单位：m） * orog：冰面海拔高度（单位：m） * strbasemag：基底摩擦力幅值（单位：MPa） * xvelbase、yvelbase、zvelbase：三维基底速度（单位：m/yr） * xvelmean、yvelmean：垂向平均水平速度（单位：m/yr） * xvelsurf、yvelsurf、zvelsurf：三维冰面速度（单位：m/yr） * n：有效压力（单位：MPa） 额外附带的WinterMeanState NetCDF文件（基于1月、2月、3月的平均速度反演得到）包含上述除有效压力外的全部变量，此外还包含<em>As</em>韦尔特曼滑动系数（Weertman sliding coefficient）。所有结果已从模型原生非结构化网格插值至观测速度所用的规则网格，关联DOI：10.5281/zenodo.5535624。
