Account for variations in oceanic salinity and discuss its multi-dimensional effects

Oceanic salinity is depending on multiple factors , at the equator is mild because high amount rain fall( though evaporation is more), if go to poles it increases but once we cross the tropics it again reduce. Seas enclosed by continent are more saline than open seas, fresh water flow to oceans will reduce salinity. Precipitation reduces salinity while evaporation increases the salinity. Wind also influence, if wind flow is high water get spread over a larger area, which reduces salinity. Ocean currents also contributed for variation of salinity

Effects of salinity :
1. Salinity determines compressibility, thermal expansion, temperature, density, absorption of insolation, ocean currents, evaporation and humidity.
2.It determines the presence of marine resource including creatures like fish.
3. Sea surface salinity can have dramatic effect on the water cycle and ocean circulation which in turn affects the climate of planet.
4. on sea voyage , travelers also get effected.
5. Ships, maritime vehicles, submarines, war ships , strategic installations near by sea and in islands are also effected.
6.local whether conditions also changed in coastal areas