The solubility and saturation value for gases in sea water increase as temperature and salinity decrease and as pressure increases. The solubility and saturation value for gases in sea water increase as temperature and salinity decrease and as pressure increases.
Solubility is the ability of something to be dissolved and go into solution.
Saturation value is the equilibrium amount of gas dissolved in water at an existing temperature, salinity and pressure. Water is undersaturated when under existing conditions it has the capacity to dissolve more gas. Gas content is below the saturation value. Water is saturated when under existing conditions it contains as much dissolved gas as it can hold in equilibrium. Gas content is at saturation value.