landice/kangerlussuaq test group includes a test case for creating a
mesh for Kangerlussuaq Glacier, 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.
The test group includes a single test case that creates the variable resolution mesh.
The test group uses the following default config options. At this point only the mesh generation options are adjusted through the config file.
[high_res_Kangerlussuaq_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 = 1.e3 # maximum cell spacing (meters) max_spac = 1.e4 # 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
landice/kangerlussuaq/default creates a variable resolution mesh.
The default is 1-10km resolution with mesh density determined by
observed ice speed and distance to ice margin. There is no model