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今年7月有多热?NASA:史上最热

更新时间:2016-8-24 18:35:05 来源:纽约时报中文网 作者:佚名

How Hot Was It in July? Hotter Than Ever.
今年7月有多热?NASA:史上最热

Continuing a string of global heat records, last month was the hottest July ever recorded, NASA said. But the agency added a wrinkle: Because July is always the hottest month of the year, this July was the hottest of any month since adequate record-keeping began in 1880.

美国航空航天局(NASA)称,上个月是有记录以来最热的7月,为一连串的全球高温纪录又添了一项。但该机构还表示:鉴于7月一直都是全年最热的月份,这个7月应该是自1880年有充分存档记录以来最热的月份。

The recent El Niño contributed to the record, as did overall warming linked to greenhouse gas emissions. El Niño, in which sea surface temperatures rise in the eastern Pacific, has now ended. One question for forecasters is whether there will be a transition to La Niña conditions, in which sea surface temperatures fall below normal. If that happens, while next year may still be hot, temperatures may stay below this year’s records.

近来的厄尔尼诺现象,以及与温室气体排放有关的全球变暖,都是气温创新高的促成因素。以东太平洋海面温度上升为特征的厄尔尼诺现象目前已告一段落。气象预测工作者面临着一个问题是,它是否会过渡为以海面温度降到正常水平之下为特征的拉尼娜现象。如果真的如此,明年可能依然炎热,但气温可能会低于今年。

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