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3.3 Vertical

Vertically, sea ice is discretized into $L$ evenly spaced layers, where the number of layers of ice ($L$) depends on the thickness category, with the thinnest two categories having two equally spaced layers and the thicker three categories having four. The total sum of vertical levels for all categories is specified in module $ice\_model\_size$ as $ntilay$, with the maximum number of levels for any category being $nmax$. Several state variables are dependent on vertical level, as seen in module $ice\_state$.