Studying scuba diving-related phenomenas I thought about how to estimate gases concentration down the sea.
Of course, solubility of gases at, for example, $5$ atm of pressure, can be estimated with Henry's law, i.e
But this is not the case down the sea, cause there is no gas in equilibrium with sea-water. There should be a way to relate solubility on the deep with the surface pressure, but can't find how.
So, is there any way to estimate gases concentration deep into the sea?