IOCAS-IR  > 海洋环流与波动重点实验室
Modulation of ENSO on Fast and Slow MJO Modes during Boreal Winter
Wei, Yuntao1,2,3; Ren, Hong-Li1
2019-11-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
卷号32期号:21页码:7483-7506
通讯作者Ren, Hong-Li(renhl@cma.gov.cn)
摘要This study investigates modulation of El Nino-Southern Oscillation (ENSO) on the Madden-Julian oscillation (MJO) propagation during boreal winter. Results show that the spatiotemporal evolution of MJO manifests as a fast equatorially symmetric propagation from the Indian Ocean to the equatorial western Pacific (EWP) during El Nino, whereas the MJO during La Nina is very slow and tends to frequently "detour" via the southern Maritime Continent (MC). The westward group velocity of the MJO is also more significant during El Nino. Based on the dynamics-oriented diagnostics, it is found that, during El Nino, the much stronger leading suppressed convection over the EWP excites a significant front Walker cell, which further triggers a larger Kelvin wave easterly wind anomaly and premoistening and heating effects to the east. However, the equatorial Rossby wave to the west tends to decouple with the MJO convection. Both effects can result in fast MJO propagation. The opposite holds during La Nina. A column-integrated moisture budget analysis reveals that the sea surface temperature anomaly driving both the eastward and equatorward gradients of the low-frequency moisture anomaly during El Nino, as opposed to the westward and poleward gradients during La Nina, induces moist advection over the equatorial eastern MC-EWP region due to the intraseasonal wind anomaly and therefore enhances the zonal asymmetry of the moisture tendency, supporting fast propagation. The role of nonlinear advection by synoptic-scale Kelvin waves is also nonnegligible in distinguishing fast and slow MJO modes. This study emphasizes the crucial roles of dynamical wave feedback and moisture-convection feedback in modulating the MJO propagation by ENSO.
关键词Tropics ENSO Madden-Julian oscillation Air-sea interaction Regression analysis Intraseasonal variability
DOI10.1175/JCLI-D-19-0013.1
收录类别SCI
语种英语
资助项目National Key Research and Development Program on Monitoring, Early Warning and Prevention of Major Natural Disaster[2018YFC1506004] ; National Basic Research (973) Program of China[2015CB453203] ; China National Science Foundation[41775066] ; China National Science Foundation[41375062] ; NSFC Innovative Group Grant[41421005] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406401] ; National Key Research and Development Program on Monitoring, Early Warning and Prevention of Major Natural Disaster[2018YFC1506004] ; National Basic Research (973) Program of China[2015CB453203] ; China National Science Foundation[41775066] ; China National Science Foundation[41375062] ; NSFC Innovative Group Grant[41421005] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1406401]
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000488785800003
出版者AMER METEOROLOGICAL SOC
引用统计
被引频次:44[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/163378
专题海洋环流与波动重点实验室
通讯作者Ren, Hong-Li
作者单位1.Nanjing Univ, Lab Climate Studies & China Meteorol Adm, Joint Lab Climate Predict Studies, Natl Climate Ctr,China Meteorol Adm, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Shandong, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
第一作者单位海洋环流与波动重点实验室
推荐引用方式
GB/T 7714
Wei, Yuntao,Ren, Hong-Li. Modulation of ENSO on Fast and Slow MJO Modes during Boreal Winter[J]. JOURNAL OF CLIMATE,2019,32(21):7483-7506.
APA Wei, Yuntao,&Ren, Hong-Li.(2019).Modulation of ENSO on Fast and Slow MJO Modes during Boreal Winter.JOURNAL OF CLIMATE,32(21),7483-7506.
MLA Wei, Yuntao,et al."Modulation of ENSO on Fast and Slow MJO Modes during Boreal Winter".JOURNAL OF CLIMATE 32.21(2019):7483-7506.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Wei-2019-Modulation-(5815KB)期刊论文出版稿限制开放CC BY-NC-SA浏览
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wei, Yuntao]的文章
[Ren, Hong-Li]的文章
百度学术
百度学术中相似的文章
[Wei, Yuntao]的文章
[Ren, Hong-Li]的文章
必应学术
必应学术中相似的文章
[Wei, Yuntao]的文章
[Ren, Hong-Li]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Wei-2019-Modulation-of-enso-on-fast-and-slow.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。