Definitions for "North Atlantic Oscillation"
A seesaw of atmospheric mass between the Icelandic low pressure system and the Azores high pressure system.
(NAO): dominant pattern of northern wintertime atmospheric circulation variability.
The NAO is the dominant mode of winter climate variability in the North Atlantic region ranging from central North America to Europe and into much of Northern Asia. The NAO is a large scale seesaw in atmospheric mass between the subtropical high and the polar low.