The ECAC-3 expedition was a joint project of Mexico and Cuba. ECAC stands for Experimento Climático en las Albercas de Agua Caliente de las Américas, or in English, Climate Experiment in the Warm Pools of the Americas. The experiment was one of the actions of the project Climate Variability and its Impacts in the Mexican, Central American, and Caribbean Regions. It received financial support from the IAI. Dr. Victor Magaña, from the Centro de Fisica de la Atmosfera de la Universidad Autonoma de Mexico (Center of Atmospheric Science at the Autonomic University of Mexico), was the principal investigator.

ECAC was held during the summer of 2001. Some of its objectives were to