Skip to Main content Skip to Navigation
Theses

Variabilité basse fréquence de l'Atlantique Tropical:
Rôle de la dynamique océanique équatoriale et Influence d'El Niño Southern Oscillation

Abstract : The objectives of this thesis are to study the coupled interannual variability in the Tropical Atlantic associated to the linear dynamics and the teleconnections with the Tropical Pacific El Niño variability. Our study suggest first that low-frequency wave dynamics (Kelvin and Rossby waves propagation) is to a large extent at work in the Tropical Atlantic, and play a significant part in the ocean-atmosphere mechanisms that can lead to the Atlantic Equatorial mode. The results of coupled experiments show that peak in SST variability in the 1 to 3 year band, as observed in the Equatorial Atlantic, is partly due to the local air-sea interactions, whereas remote ENSO Pacific forcing controls the lower frequency variability (3-7 year). Our results point out the complexity of the Equatorial Atlantic oceanatmosphere system which predictability depends on the Pacific ENSO conditions and/or the high-frequency atmospheric activity.
Document type :
Theses
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-00260664
Contributor : Williams Exbrayat <>
Submitted on : Tuesday, March 4, 2008 - 4:34:40 PM
Last modification on : Saturday, January 9, 2021 - 3:31:16 AM
Long-term archiving on: : Thursday, May 20, 2010 - 7:48:17 PM

Identifiers

Collections

Citation

Serena Illig. Variabilité basse fréquence de l'Atlantique Tropical:
Rôle de la dynamique océanique équatoriale et Influence d'El Niño Southern Oscillation. Océan, Atmosphère. Université Paul Sabatier - Toulouse III, 2005. Français. ⟨tel-00260664⟩

Share

Metrics

Record views

500

Files downloads

2627