Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL086133 |
A Cautionary Note on the Long-term Trend in Activity of the Madden-Julian Oscillation During the Past Decades | |
Lyu, Mengxia1,2; Jiang, Xianan2,3; Wu, Zhiwei4 | |
2019-12-10 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:23页码:14063-14071 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Recent studies suggest that frequency of active phases of the Madden-Julian Oscillation (MJO) over the Maritime Continent and western Pacific, that is, the MJO Phases 4-6 defined by the real-time multivariate MJO (RMM) index, has increased in recent winters. A robust positive trend in MJO Phase 4-6 days during 1979-2015 winters is confirmed in this study. Our analyses, however, suggest that this trend could be exaggerated due to the blended low-frequency variability signals in the RMM. When the winter RMM is reconstructed using anomalous fields after removing their winter mean instead of the previous 120-day mean as for the original RMM, the robust trend in MJO Phase 4-6 days can no longer be detected. Therefore, cautions need to be exercised when applying the RMM for studies on the low-frequency variability and climate trend in MJO activity and using the derived MJO variability to interpret associated changes in climate systems. |
英文关键词 | Madden-Julian Oscillation real-time multivariate MJO index climate trend Arctic amplification |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000502108900001 |
WOS关键词 | SURFACE AIR-TEMPERATURE ; TROPICAL CYCLOGENESIS ; MJO ; PREDICTION ; TELECONNECTIONS ; WINTERTIME ; PREDICTABILITY ; SKILL |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/225183 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Coll Atmosphere Sci, Nanjing, Jiangsu, Peoples R China; 2.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90032 USA; 3.CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA; 4.Fudan Univ, Inst Atmospher Sci, Dept Atmospher & Ocean Sci, Shanghai, Peoples R China |
推荐引用方式 GB/T 7714 | Lyu, Mengxia,Jiang, Xianan,Wu, Zhiwei. A Cautionary Note on the Long-term Trend in Activity of the Madden-Julian Oscillation During the Past Decades[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(23):14063-14071. |
APA | Lyu, Mengxia,Jiang, Xianan,&Wu, Zhiwei.(2019).A Cautionary Note on the Long-term Trend in Activity of the Madden-Julian Oscillation During the Past Decades.GEOPHYSICAL RESEARCH LETTERS,46(23),14063-14071. |
MLA | Lyu, Mengxia,et al."A Cautionary Note on the Long-term Trend in Activity of the Madden-Julian Oscillation During the Past Decades".GEOPHYSICAL RESEARCH LETTERS 46.23(2019):14063-14071. |
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