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Diversity of the Madden-Julian Oscillation
Madden-Julian Oscillation (MJO) is the dominant mode of atmospheric intraseasonal variability and the cornerstone for subseasonal prediction of extreme weather events. Climate modeling and prediction of MJO remain a big challenge, partially due to lack of understanding the MJO diversity. Here, we de...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Association for the Advancement of Science
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6669008/ https://www.ncbi.nlm.nih.gov/pubmed/31392274 http://dx.doi.org/10.1126/sciadv.aax0220 |
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author | Wang, Bin Chen, Guosen Liu, Fei |
author_facet | Wang, Bin Chen, Guosen Liu, Fei |
author_sort | Wang, Bin |
collection | PubMed |
description | Madden-Julian Oscillation (MJO) is the dominant mode of atmospheric intraseasonal variability and the cornerstone for subseasonal prediction of extreme weather events. Climate modeling and prediction of MJO remain a big challenge, partially due to lack of understanding the MJO diversity. Here, we delineate observed MJO diversity by cluster analysis of propagation patterns of MJO events, which reveals four archetypes: standing, jumping, slow eastward propagation, and fast eastward propagation. Each type exhibits distinctive east-west asymmetric circulation and thermodynamic structures. Tight coupling between the Kelvin wave response and major convection is unique for the propagating events, while the strength and length of Kelvin wave response distinguish slow and fast propagations. The Pacific sea surface temperature anomalies can affect MJO diversity by modifying the Kelvin wave response and its coupling to MJO convection. The results shed light on the mechanisms responsible for MJO diversity and provide potential precursors for foreseeing MJO propagation. |
format | Online Article Text |
id | pubmed-6669008 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-66690082019-08-07 Diversity of the Madden-Julian Oscillation Wang, Bin Chen, Guosen Liu, Fei Sci Adv Research Articles Madden-Julian Oscillation (MJO) is the dominant mode of atmospheric intraseasonal variability and the cornerstone for subseasonal prediction of extreme weather events. Climate modeling and prediction of MJO remain a big challenge, partially due to lack of understanding the MJO diversity. Here, we delineate observed MJO diversity by cluster analysis of propagation patterns of MJO events, which reveals four archetypes: standing, jumping, slow eastward propagation, and fast eastward propagation. Each type exhibits distinctive east-west asymmetric circulation and thermodynamic structures. Tight coupling between the Kelvin wave response and major convection is unique for the propagating events, while the strength and length of Kelvin wave response distinguish slow and fast propagations. The Pacific sea surface temperature anomalies can affect MJO diversity by modifying the Kelvin wave response and its coupling to MJO convection. The results shed light on the mechanisms responsible for MJO diversity and provide potential precursors for foreseeing MJO propagation. American Association for the Advancement of Science 2019-07-31 /pmc/articles/PMC6669008/ /pubmed/31392274 http://dx.doi.org/10.1126/sciadv.aax0220 Text en Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Wang, Bin Chen, Guosen Liu, Fei Diversity of the Madden-Julian Oscillation |
title | Diversity of the Madden-Julian Oscillation |
title_full | Diversity of the Madden-Julian Oscillation |
title_fullStr | Diversity of the Madden-Julian Oscillation |
title_full_unstemmed | Diversity of the Madden-Julian Oscillation |
title_short | Diversity of the Madden-Julian Oscillation |
title_sort | diversity of the madden-julian oscillation |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6669008/ https://www.ncbi.nlm.nih.gov/pubmed/31392274 http://dx.doi.org/10.1126/sciadv.aax0220 |
work_keys_str_mv | AT wangbin diversityofthemaddenjulianoscillation AT chenguosen diversityofthemaddenjulianoscillation AT liufei diversityofthemaddenjulianoscillation |