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EXTRA-TROPICAL CIRCULATION [1 record]

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Record 1 2001-05-30

English

Subject field(s)
  • Atmospheric Physics
CONT

Examination of the dominant growing singular vectors further confirms the importance of tropical heating anomalies associated with El Niño/La Niña as well as Madden-Julian oscillation episodes in the predictable dynamics of the extratropical circulation.

Key term(s)
  • extra-tropical circulation

French

Domaine(s)
  • Physique de l'atmosphère
CONT

En ce qui concerne les flux atmosphériques des basses couches on peut distinguer, en première approximation, deux grands régimes planétaires : 1) la circulation intertropicale intéressant les régions sises approximativement entre 35° nord et 35° sud, sur la face équatoriale des anticyclones subtropicaux [...] 2) la circulation extratropicale qui prend place habituellement entre les parallèles 35° et 60°. Situés sur la face polaire des anticyclones subtropicaux, ces flux se déplacent en moyenne d'ouest en est, entraînant les familles de perturbations dites du front polaire qui approvisionnent largement et assez régulièrement en eau les régions tempérées.

Spanish

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