Question

What are the factors aa affecting the salinity of the sea water

Answer 1

salinity is the saltiness or dissolved salt content of a body of water. The term salinity describes the level of different salts e.g. sodium chloride, magnesium and calcium sulphates etc dissolved in water.  Sea water has strong salinity due to its higher dissolved salts content. On an average, seawater has a salinity of about 3.5% (or 35 g/L). Sea water has almost all type of salts and other materials dissolved in it. This includes dissolved materials from Earth’s crust as well as materials released from biosphere (from living organisms). Sea Surface Salinity (SSS) can have dramatic effects on the water cycle and ocean circulation.

Salinity is expressed by the amount of salt found in 1,000 grams of water e.g. 1 gram of salt in 1,000 grams of water; the salinity is 1 part per thousand, or 1 ppt. The graph below shows the proportions of salts in sea water;