Glossary
The English version of our glossary is currently under construction and will be regularly updated.
Antarctic Oscillation (AAO)
The wind system in the Southern Ocean describing the north-south shifting of the westerly winds, which drives the wind field from west to east in a circular motion and dominates large-scale atmospheric circulation in the middle and high latitudes of the Southern Hemisphere.
The wind system in the Southern Ocean describing the north-south shifting of the westerly winds, which drives the wind field from west to east in a circular motion and dominates large-scale atmospheric circulation in the middle and high latitudes of the Southern Hemisphere. Similarly to the North Atlantic Oscillation and the Arctic Oscillation, used to measure the atmospheric zonal circulation over the Southern Ocean. The AAO is calculated using meridional (parallel to a meridian) air-pressure differences.