Located at the foot of the imposing Sierras de los Comechingones, in the province of San Luis, the city of Villa de Merlo is known not only for its natural beauty, but also for an atmospheric phenomenon that distinguishes it from other tourist destinations in Argentina: its famous microclimate.
¿What makes Merlo's climate so special?
The question arises almost immediately upon arrival and breathing the fresh air of the region: how is it possible that the climate is so pleasant all year round? The answer is not simple, but fascinating. Villa de Merlo is nestled between two mountain ranges in a dry climatic corridor, with an average altitude of 900 meters above sea level.
Annual rainfall does not exceed 800 mm and the average temperature is around 20°C. But there is more. The humid winds coming from the east, generally loaded with polluting elements, are blocked by the sierras, which reach an altitude of 2,000 meters. This, added to the north-south orientation of the mountain range and the geological constitution of its rocks, produces an atmosphere with negative ionization and high oxygen concentration. Scientists have found that this environment favors the presence of natural ozone, while the vegetation, which combines cacti with ferns, reveals the richness of an ecosystem where species that usually inhabit different climates coexist. The presence of lichens, natural bioindicators, confirms the absence of environmental pollution
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Eduardo Epifanio
