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| 1 | Genesis of the 2014–2016 El Nio events显示文摘The 2015/2016 El Nio was one of the strongest El Nio events in history, and this strong event was preceded by a weak El Nio in 2014. This study systematically analyzed the dynamical processes responsible for the genesis of these events. It was found that the weak 2014 El Nio had two warming phases, the spring-summer warming was produced by zonal advection and downwelling Kelvin waves driven by westerly wind bursts(WWBs), and the autumn-winter warming was produced by meridional advection, surface heating as well as downwelling Kelvin waves. The 2015/2016 extreme El Nio, on the other hand, was primarily a result of sustained zonal advection and downwelling Kelvin waves driven by a series of WWBs, with enhancement from the Bjerknes positive feedback. The vast difference between these two El Nio events mainly came from the different amount of WWBs in 2014 and 2015. As compared to the 1982/1983 and 1997/1998 extreme El Nio events, the 2015/2016 El Nio exhibited some distinctive characteristics in its genesis and spatial pattern. We need to include the effects of WWBs to the theoretical framework of El Nio to explain these characteristics, and to improve our understanding and prediction of El Nio. | LIAN Tao CHEN DaKe TANG YouMin | 2017 | Science China Earth Sciences2017，60，9： | 9 |
| 2 | 2014~2016厄尔尼诺事件的机制分析显示文摘2015~2016厄尔尼诺是有记录以来最强的厄尔尼诺事件之一.在此之前的2014年还发生了一次较弱的厄尔尼诺事件.本文系统地分析了形成这两次事件的动力机制.结果表明,2014年的弱厄尔尼诺有两个增暖阶段,春夏季的增暖主要来源于西风爆发驱动的异常东向热平流和东传的下沉开尔文波,而秋冬季的增暖主要来源于异常经向平流、净热通量和下沉开尔文波.2015~2016年的极端厄尔尼诺事件则主要是在一系列西风爆发的驱动下,通过持续的中太平洋东向热输运异常、东太平洋垂向热输运异常以及Bjerknes正反馈而形成.西风爆发的多寡是造成这两次厄尔尼诺事件强度大相庭径的主因.相比于1982~1983和1997~1998极端厄尔尼诺事件,2015~2016极端厄尔尼诺在发生机制和空间形态上具有相当不同的特点.只有在经典的厄尔尼诺理论框架中加入西风爆发的作用,才能从一个统一的视角解释这些特点,也才能进一步改进我们认识和预测厄尔尼诺的能力. | 连涛 陈大可 唐佑民 | 2017 | 中国科学:地球科学2017，47，9： | 7 |
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