This concerns the parameter hrdamp in the namelist. Setting this parameter to 1 enables horizontal damping for the
Either the
u, v, and w velocity fields according to the README.namelist file. However, if you look at the source code in param.F (line 8706), only the variable tauf is initialized when hrdamp = 1 which acts on the w field and not u and v in solve1.F (line 403).Either the
README.namelist needs to be updated stating that lateral damping only acts on w or the variable tauh must be initialized in the same manner as tauf in param.F.