As scientists have come to recognize some of the harbingers of El Nino, it has become possible to provide advance warning of its arrival, and make preparations. However, Liu Chung-ming notes another area of concern: "As the Earth has warmed in recent years, El Nino has become less regular; its cycle has become shorter and more erratic."
近年學界也逐漸掌握聖嬰出現前的徵兆，讓聖嬰的預報與防範成為可能，但讓人擔憂的是，「隨著氣候的暖化，聖嬰變得更不安好動，週期有縮短與混亂的趨勢，」柳中明表示。