Why Ocean Salinity increasing?
When evaporation occurs at a rate faster than precipitation, the net result is that salt is left behind and the salinity in the oceans will increase. Of course, new salt is brought into the ocean by rivers and deposition of salts on the sea floor takes salt out of the ocean. As a whole, the salinity of the ocean (total salt everywhere) has not changed for millions of years since these input and removal processes are in balance. The increased “saltiness” created by the imbalance between precipitation and evaporation in certain areas of the ocean (some very large) is balance by areas that are fresher so the whole ocean is not getting saltier.
