It should be noted that in a case of north-south ocean current or a south-north ocean current there is a possible large temperature difference between the ocean and the land.
Ocean currents can be regarded as the continuous as well as predictable movement of seawater which do take place due to gravity and wind
This is called Coriolis Effect, and water density, however temperature difference, between the ocean and the land play a role in north-south ocean current.
Learn more about Ocean currents at;
https://brainly.com/question/15355318