How do sensors reveal hidden aspects of the world’s oceans?

How do sensors reveal hidden aspects of the world’s oceans?

Oceans comprise about 96.5% of the water-covered surface (71%) of the Earth. Surprisingly, the salinity of these huge bodies of water varies considerably. Interconnected masses and layers mix together and split apart through currents, eddies, and changes to temperature and salinity, where salinity is measured in practical salinity units or PSUs. The Practical Salinity Scale 1978, or PSS-78, an international standard, uses a non-linear equation f…