A Madden-Julian Oscillation event remotely accelerates ocean upwelling to abruptly terminate the 1997/1998 super El Nino
A Madden-Julian Oscillation event remotely accelerates ocean upwelling to abruptly terminate the 1997/1998 super El Nino
复制标题
马登-朱利安振荡事件远程加速海洋上升流，突然终止 1997/1998 超级厄尔尼诺现象
DOI：
10.1002/2017gl074683
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
and M. Satoh
中科院分区：
文献类型：
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作者：
Miyakawa;T.;H. Yashiro;T. Suzuki;H. Tatebe;and M. Satoh
1997/1998年超强厄尔尼诺现象的终止是非常突然的。1998年5月的马登-朱利安振荡(MJO)，一种巨大的热带风暴云团，可能是造成这次突然终止的原因之一。尽管18年前提出了耸人听闻的建议，但由于很难同时充分模拟厄尔尼诺现象和MJO，MJO的作用仍然存在争议和猜测。使用新开发的、完全海洋耦合的全球云系分辨率数值模式的集合模拟系列以前所未有的细节复制了1998年5月的特定大气和海洋条件，将MJO的预测技能扩展到46天。海洋大陆上MJO活动较强的模拟集合成员在东太平洋经历了较快的海面温度下降，证实了与遥远的MJO相关的东风加速了海洋上升流，从而突然终止了厄尔尼诺现象。
The termination of the superintense 1997/1998 El Niño was extraordinarily abrupt. The May 1998 Madden‐Julian Oscillation (MJO), a massive complex of stormy tropical clouds, is among possible contributors to the abrupt termination. Despite having been sensationally proposed 18 years ago, the role of the MJO remained controversial and speculative because of the difficulty of sufficiently simulating the El Niño and MJO simultaneously. An ensemble simulation series using a newly developed, fully ocean‐coupled version of a global cloud system resolving numerical model replicated the specific atmosphere and ocean conditions of May 1998 in unprecedented detail, extending the prediction skill of the MJO to 46 days. Simulation ensemble members with stronger MJO activities over the Maritime Continent experienced quicker sea surface temperature drop in the eastern Pacific, confirming that the easterly winds associated with the remote MJO accelerated ocean upwelling to abruptly terminate the El Niño.