.. _landice_koge_bugt_s: koge_bugt_s =========== The ``landice/koge_bugt_s`` test group includes a test case for creating a mesh for Koge Bugt S, Greenland. The optimization for basal friction happens outside of COMPASS because it requires expert usage and takes a larger amount of computing resources than COMPASS is typically run with. .. figure:: images/koge_bugt_s_500m_to_4km.png :width: 777 px :align: center Ice thickness and grid spacing in meters on Koge Bugt S 500m-4km variable resolution mesh. The test group includes a single test case that creates the variable resolution mesh. config options -------------- The test group uses the following default config options. At this point only the mesh generation options are adjusted through the config file. .. code-block:: cfg [mesh] # number of levels in the mesh levels = 10 # distance from ice margin to cull (km). # Set to a value <= 0 if you do not want # to cull based on distance from margin. cull_distance = 5.0 # mesh density parameters # minimum cell spacing (meters) min_spac = 5.e2 # maximum cell spacing (meters) max_spac = 4.e3 # log10 of max speed (m/yr) for cell spacing high_log_speed = 2.5 # log10 of min speed (m/yr) for cell spacing low_log_speed = 0.75 # distance at which cell spacing = max_spac (meters) high_dist = 1.e5 # distance within which cell spacing = min_spac (meters) low_dist = 1.e4 # mesh density functions use_speed = True use_dist_to_grounding_line = False use_dist_to_edge = True mesh_gen -------- ``landice/koge_bugt_s/default`` creates a variable resolution mesh. The default is 500m-4km resolution with mesh density determined by observed ice speed and distance to ice margin. There is no model integration step.