The El Niño phenomenon; an abnormal warming of surface ocean waters in the eastern tropical Pacific that leads to global climate changes

A large-scale interaction between the ocean and atmosphere where sea surface temperatures and water levels in the eastern Pacific drop below average, leading to global weather anomalies such as unusual rainfall and drought; also known as [[拉尼娜现象|拉尼娜現象|la1 ni2 na4 xian4 xiang4]] or in Taiwan as [[反圣婴现象|反聖嬰現象|fan3 sheng4 ying1 xian4 xiang4]]