The hydrological cycle drives the water availability in the watershed as well as groundwater recharge. Although rainfall data is loss by infiltration, evaporation and retention, large amount of water is turned into surface and sub-surface runoff to recharge the river network in the watershed. Furthermore, infiltration and percolation could return to the cycle providing the river base flow. In the water cycle, evaporation from the surface ocean is one of the main factors. Some water in the oceans evaporates into the air, and the rising air takes the vapor toward the upper atmosphere. The water vapor content in the atmosphere is then advected towards the land mass, where cooler temperatures cause it to condense into clouds (see Figure 1). Later, cloud particles collide, grow, and fall out of the sky as precipitation.
Regional warming with higher sea surface temperature (SST) could intensify the ocean surface evaporation, increasing the water content in the atmosphere. Too high SST along with changes in the wind patterns in the upper and lower atmosphere, changes in the high pressure system frequency and location could lead to drought events instead of heavy rainfall in the Caribbean region. In this way, the entire hydrological cycle could be affected and the water availability in the watersheds.