Salinity
= Salinity
{title2=$C$}
{wiki}
<Salinity> measures dissolved salt content. A transport model must specify its units; salt mass fraction is one convenient convention. A dilute solution's <ice> <liquidus> is often approximated by $T_L=T_m-mC$. Salt-free <ice> has zero <salinity>, and the moving interface's salt balance distinguishes <salt rejection> during <freezing> from dilution during <melting>.