1997年夏天,与常年不同,我国北方大部分地区出现持续高温酷暑天气。为什么1997年的夏天如此反常呢?这是因为1997～1998年度出现了历史上最严重的“厄尔尼诺”现象,“环球同此凉热”。厄尔尼诺是西班牙语“圣婴”的意思。19世纪初,在南美洲的厄瓜多尔、秘鲁等西班牙语系的国家,渔民们发现,每隔几年,从10月至第二年的3月便会出现一股 In the summer of 1997, unlike most perennials, there was a continuous hot summer weather in most parts of northern China. Why is the so-called summer of 1997 so abnormal? This is because the worst “El Nino” phenomenon ever occurred in history from 1997 to 1998, and “the world is on the same cold.” El Nino is the meaning of Spanish “El Nino”. In the early 19th century, in countries such as Ecuador, Peru and other Spanish-speaking countries in South America, fishermen found that every few years from October to March of the second year there will be a