Parameter Tree:
EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > ARCTIC OSCILLATION

Definition:
The Arctic Oscillation (AO) is the dominant pattern of non-seasonal
sea-level pressure (SLP) variations north of 20N, and it is
characterized by SLP anomalies of one sign in the Arctic and anomalies
of opposite sign centered about 37-45N. Additional information is
available for the Arctic Oscillation (AO) and for the North Atlantic
Oscillation (NAO), a close relative of the AO
(http://jisao.washington.edu/ao/)


Reference:
Joint Institute for the Study of the Atmosphere and Ocean, U. Washington
http://jisao.washington.edu/ao/