Mots-clés
Caribbean Sea
Iberian Peninsula
atmospheric pressure
teleconnection
NAO
Résumé
Cette étude analyse les liens climatiques observés entre les régions du sud-ouest de la péninsule ibérique et le nord de la mer des Caraïbes. Le rôle que joue l’anticyclone des Açores (NASH en anglais) sur les régions qui entourent l’océan Atlantique est bien connu de la communauté scientifique, et reste un facteur essentiel dans la circulation atmosphérique générale entre les zones tropicales, subtropicales et les latitudes médianes. Pour cette analyse, les moyennes mensuelles de pression atmosphérique de San Fernando-Cádiz (Espagne) ont été choisies comme repère de la zone sud-ouest de la péninsule ibérique, et celles de San Juan (Porto Rico) et Guantánamo (Cuba) ont été retenues comme points de référence pour le nord de la mer des Caraïbes. L’analyse inclut également les valeurs mensuelles de l’Oscillation nord-atlantique (ONA). Les relevés climatiques utilisés ont été réalisés sur cinquante-quatre ans, entre 1956 et 2009. Les résultats de ces corrélations montrent que quatre mois de l’année (février, juin,
août et octobre) enregistrent des valeurs positives dont les statistiques sont significatives entre les pressions atmosphériques de San JuanGuantánamo et San Fernando-Cádiz. Trois autres mois (janvier, février et mars) ont également montré des corrélations significatives entre les pressions atmosphériques de San Juan-Guantánamo et l’ONA.
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