In recent years, El Niño has frequently come into the public eye, becoming a so-called 'disaster star.' The term originated from Peruvian fishermen who referred to the warm ocean currents in the equatorial Pacific, which later evolved into a crucial factor in global climate change. The El Niño phenomenon not only affects the livelihoods of South American fishermen but also impacts global weather patterns, triggering extreme weather events.
At the core of the El Niño phenomenon is the abnormal rise in sea temperatures in the equatorial Pacific. This disruption not only disturbs the fishing industry of Peruvian fishermen but also causes unusual climate conditions worldwide. From the Northern Hemisphere to the Southern Hemisphere, and from Africa to Latin America, climates have become erratic; once cool areas are scorched by heat, warm seasons experience unexpected snowfall, rainy seasons are delayed, and droughts are followed by floods.
Scientists are striving to uncover the secrets behind El Niño. A popular theory suggests that atmospheric factors play a significant role, positing that the equatorial Pacific experiences a pattern of higher sea temperatures in the west and lower temperatures in the east due to trade winds. When these trade winds weaken, water from the western Pacific flows back to the east, leading to abnormally high sea temperatures and triggering the El Niño phenomenon. This phenomenon can also result in global climate anomalies, causing droughts, floods, dust storms, and wildfires.
With advancements in technology, scientists can collect vast amounts of data through meteorological satellites, allowing for timely warnings about El Niño events. In 1997, scientists used satellite data to predict a severe El Niño phenomenon, which subsequently affected nearly every corner of the globe in the following months. Despite this, many specific causes of the El Niño phenomenon remain unresolved mysteries waiting to be unraveled.
