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ARCTIC OSCILLATION [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2020-07-22

English

Subject field(s)
  • Atmospheric, Climatic and Meteorological Phenomena
DEF

A winter fluctuation in the amplitude of a pattern characterized by low surface pressure in the Arctic and strong mid-latitude westerlies.

CONT

AO phases are analogous to the Southern Hemisphere's Antarctic oscillation (AAO), a similar pattern of air pressure and jet stream anomalies in the Southern Hemisphere. Viewed from above either pole, these patterns show a characteristic ring-shape or "annular" pattern; thus, AO and AAO are also referred to as the northern annular mode (NAM) and southern annular mode (SAM), respectively.

French

Domaine(s)
  • Phénomènes météorologiques, climatiques et atmosphériques
DEF

Fluctuation hivernale de l'amplitude d'une configuration caractérisée par de basses pressions en surface dans l'Arctique et de forts vents d'ouest aux latitudes moyennes.

OBS

AO; NAM : acronymes des termes anglais «Arctic oscillation» et «northern annular mode».

Spanish

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