Sea Ice Dynamics in ICON-O - Numerical evaluation

This data set includes the numerical data and the relevant source code accompanying the manuscript " Discretization of sea ice dynamics in the tangential plane on the sphere by a CD-grid-type finite element". In addition to the raw data, Python and shell scripts are deposited to process the data. The data set is used to evaluate the new discretization of the sea ice dynamics in the ocean model ICON-O. The approach is based on a CD-grid like approximation of the sea ice momentum equation, that is realized on an icosahedral grid. We numerically demonstrate the first order convergence in space by comparing the approximation to an analytic solution (4.1/ball.gp). We further show that a stabilization of the CD-grid on the icosahedral gird is required (4.1/vtk). To analyze the robustness of the CD-grid approach in ICON-O we solve the sea ice momentum equation on the sphere (4.2/ice_drift_sphere00002.vtk) and compare the results to a simulation conducted in two-dimensional planar geometry (4.2/ice_drift_planar00001.vtk). Finally, we compare the simulated sea ice drift from ICON-O with observations (4.3/Fig5.png). README.txt outlines how the routines are realized in ICON-O.

本数据集收录了与论文《基于CD网格型有限元在海冰动力学切向平面上的离散化》相关的数值数据和源代码。除原始数据外，还包含用于数据处理的自定义Python脚本和shell脚本。该数据集旨在评估海洋模型ICON-O中海冰动力学的全新离散化方法。此方法基于对海冰动量方程的CD网格近似，并在二十面体网格上实现。通过将数值近似与解析解（4.1/ball.gp）进行对比，我们数值验证了空间一阶收敛性。此外，我们还证明了在二十面体网格上对CD网格进行稳定化处理的需求（4.1/vtk）。为了分析CD网格方法在ICON-O中的鲁棒性，我们求解了球面上的海冰动量方程（4.2/ice_drift_sphere00002.vtk），并将结果与二维平面几何模拟结果（4.2/ice_drift_planar00001.vtk）进行了比较。最后，我们将ICON-O模拟的海冰漂移与观测数据（4.3/Fig5.png）进行了对比。README.txt文件详细说明了这些程序如何在ICON-O中实现。