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... > Science Keywords > EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > TELECONNECTIONS > ANTARCTIC OSCILLATION

Preferred term

ANTARCTIC OSCILLATION  

Definition

  • The Antarctic Oscillation (AAO) is the dominant pattern of non-seasonal tropospheric circulation variations south of 20S, and it is characterized by pressure anomalies of one sign centered in the Antarctic and anomalies of the opposite sign centered about 40-50S. The AAO is also referred to as the Southern Annular Mode (SAM). There is a Northern Hemisphere analog to the AAO, and it is called the Arctic Oscillation (or Northern Annular Mode). (en)

Broader concept

Change note

  • 2012-06-25 10:36:28.0 [mpmorahan] Insert Concept add narrower relation (ANTARCTIC OSCILLATION [511e6c26-8806-4d88-9763-a136a6957042,22983] - AAO [690be4e9-c48c-4442-8b86-3d0a51abb0c1,39701]);
  • 2020-02-14 14:10:17.0 [tstevens] Remove Concepts delete narrower relation (null);

URI

https://gcmd.earthdata.nasa.gov/kms/concept/511e6c26-8806-4d88-9763-a136a6957042

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