The natural climate phenomenon El Niño corresponds to a warming of Pacific temperatures, particularly along the Peruvian and Ecuadorian coasts, marking the end of the fishing season.
Scientists have recently demonstrated that this phenomenon is no longer solely the result of a natural sunlight mechanism but is also induced by climate change linked to human activities.
The results of these research works were published in the Geophysical Research Letters in October last year. It appears that since the 1970s, sunlight and volcanic activity are no longer the primary drivers of the ENSO phenomenon (El Niño-Southern Oscillation).
As its name suggests, the phenomenon oscillates between warm phases (El Niño) and cold phases (La Niña). This oscillation tends to disappear in favor of a warming phase that follows the curve of climate change. The attenuation between the phases is detrimental to biodiversity preservation, and the prolongation of the warm phase accentuates natural disasters such as fires and cyclones.