Keywords
Caribbean Sea
Iberian Peninsula
atmospheric pressure
teleconnection
NAO
Abstract
This study analyzes possible climatic connections that establish the subtropical anticyclone of the North Atlantic (NASH) between two regions of the Atlantic Ocean. The fundamental importance of NASH is widely known by the scientific community. The condition of its large center of action in the regions around the Atlantic Ocean is the key part in the general atmospheric circulation between tropics, subtropical limits and the mid-latitudes. We have used monthly measures of the atmospheric pressure of San Fernando-Cádiz (Spain), as a reference point of the Southwest area of the Iberian Peninsula, and of San Juan (Puerto Rico) and Guantánamo (Cuba), as reference points for the north of the Caribbean Sea. The analysis also includes the monthly values of the North Atlantic Oscillation (NAO) index. The climatic registers that have been used correspond to a sequence of fifty-four years between 1956 and 2009. The results of the correlations show four months of the year (February, June, August and October) with significant positive statistical values between the atmospheric pressures of San Juan-Guantánamo and San Fernando-Cádiz. They also show three months equally important between the pressures of San Juan-Guantánamo and the NAO index (January, February and March).
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