This paper focuses on the El Nino phenomenon and makes a comprehensive analysis of its sources and consequences. The dynamic processes of the ocean, such as the shift of the thermocline in the equatorial Pacific Ocean, abnormal movement of ocean currents, and abnormal changes in atmospheric circulation, are among the many causes of El Nino. El Nino can cause multiple anomalies at the same time, with wide-ranging impacts on climate, ecosystems and human society. Extreme weather events such as storms and heavy rains are becoming more frequent in the tropics, causing climate anomalies to become more pronounced. It causes habitat destruction for Marine species and changes in the composition of several biomes. In terms of the economy, the El Nino climate anomaly leads to fluctuations in food production, affecting stability, and the increase in energy use caused by abnormal temperatures puts further pressure on the economies of different countries. Therefore, the study and prediction of El Nino phenomena is essential to establish effective coping mechanisms and mitigate its adverse effects on the environment and human culture.
