Ocean gyres are present in every ocean and move water from the poles to the equator and back again. The water warms at the equator and cools at the poles. Because ocean water temperatures can transfer to the air, the cold and warm waters circulated by the gyres influence the climate of nearby landmasses.

How do ocean gyres contribute to the changes of climate?

Ocean gyres represent large systems of ocean currents, which are driven by the wind (Munk, 1950). At the western edge of subtropical gyres are the western boundary currents, which carry warm water from the tropics poleward, contributing to a warm and wet climate on the adjacent mainland.

How do gyres help regulate climate?

Currents, gyres and eddies transport water and heat long distances and help promote large-scale mixing of the ocean. In the process they also transport nutrients, salt and other chemicals and help regulate the planet's weather, climate and marine ecosystems.