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QUASI-BIENNIAL PERIODICITY [1 record]

Record 1 2004-10-25

English

Subject field(s)
  • Atmospheric Physics
DEF

Change in the stratospheric easterly and westerly wind regimes between 12°N and 12°S, the period varying from 24 to 30 months.

OBS

The new régime occurs above 30 km, descends about 1 km each month and tapers off below 23 km.

Key term(s)
  • quasi biennial periodicity
  • quasibiennial periodicity

French

Domaine(s)
  • Physique de l'atmosphère
DEF

Changement dans les régimes des vents d'est et d'ouest dans la stratosphère entre 12°S et 12°N, avec une période variant de 24 à 30 mois.

OBS

Le nouveau régime du vent prend naissance au-dessus de 30 km, descend d'environ 1 km par mois et s'éteint au-dessous de 23 km.

OBS

La périodicité quasi biennale est typique de l'oscillation quasi biennale.

Key term(s)
  • périodicité quasi-biennale
  • périodicité quasibiennale

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
DEF

Cambio en los regímenes de vientos del este y del oeste entre 12°N y 12°S, con un período que varía de 24 a 30 meses.

OBS

El nuevo régimen se origina por encima de los 30 km, desciende alrededor de 1 km cada mes y se extingue por debajo de 23 km.

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