Quasi-geostrophic theory

Quasi-geostrophic theory is a framework in meteorology and oceanography that describes large-scale flows in the atmosphere and oceans, where rotation caused by Earth's spin is dominant. It simplifies complex fluid motion by balancing the Coriolis force (due to Earth's rotation) with pressure differences, allowing scientists to predict how weather patterns and ocean currents develop over time. This theory assumes the flows are mostly horizontal and change gradually, making it a powerful tool for understanding phenomena like jet streams and ocean gyres while ignoring less significant forces.