What is it about?
The 2015 El Nino, following a strong MJO, was identified as a super event that exerted a great impact on the tropical and global climate. A novel fiction related the triggering effect of extratropical perturbation on the onset of 2015 MJO-El Nino was documented in this study
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Why is it important?
The March 2015 MJO exhibited several unique characteristics: the effect of extratropical forcing, atypical genesis location and timing in the equatorial western Pacific, and the extremity of amplitudes in many aspects.We explored this unique feature and found that the March 2015 MJO might have developed because of forcing originating in the extratropical western North Pacific.
Perspectives
Our study revealed the possible effect of extratropical forcing, which has not been considered previously, on the onset of MJO and El Niño. Such a mechanism, although it might not occur frequently, warrants further attention and may elucidate the onset of an MJO and its potential effect on El Niño.
Dr Chi-Cherng Hong
University of Taipei
Read the Original
This page is a summary of: Extratropical Forcing Triggered the 2015 Madden–Julian Oscillation–El Niño Event, Scientific Reports, April 2017, Nature,
DOI: 10.1038/srep46692.
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