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The long awaited La Niña, which was first predicted by the Climate Prediction Center (CPC) back in April, has finally arrived in the Pacific Ocean, NOAA announced Thursday -- and it's expected to stick around through the winter. 星期四，美国国家海洋和大气管理局（NOAA）宣布：等待许久的拉尼娜终于抵达太平洋了。早在今年4月，美国国家气候预测中心（CPC）就首次预言了拉尼娜的到来。据估计，它将在整个冬天逗留于此。 La Niña conditions, which are characterized by below-normal sea surface temperatures in the tropical Pacific, were observed during October and have persisted into November -- prompting the CPC to raise the ENSO Alert System from a La Niña Watch to a La Niña Advisory. 拉尼娜现象的典型特征是热带太平洋海平面温度会低于常值，据观测，今年整个10月份都有这种现象，后来拖拖拉拉进入11月也没有消失——因此，CPC将将厄尔尼诺南方涛动警报系统（ENSO Alert System）里的拉尼娜警戒级别从“监视”提升到了“警报”级。 | 
