         solver_params = SolverParams(maxiter_picard=1),
            melt_rate = MISMIPMeltRateOne());

update_state!(model);
m = deepcopy(model.fields.gh.basal_melt)
m[model.fields.gh.grounded_fraction .== 1.] .= NaN
msat = deepcopy(m)
msat[msat .&gt; 50] .= 50

plt = Plots.heatmap(model.grid.xxh[:,1]/1e3, model.grid.yyh[1,:]/1e3, msat&#39;, 
            xlabel = &quot;x (km)&quot;, 
            ylabel = &quot;y (km)&quot;,
            colorbar_title = &quot;melt rate (m/yr)&quot;,
            title = &quo