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DOI | 10.1002/joc.5440 |
The Madden-Julian oscillation during the 2016 summer and its possible impact on rainfall in China | |
Shao, Xiaolu1,2,3; Li, Shuanglin1,2,3,4; Liu, Na1,2; Song, Jie5 | |
2018-04-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:5页码:2575-2589 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The summer rainfall in China in 2016 exhibited a substantial intraseasonal feature, with an intensification in June and July but a suppression in August over the Yangtze River Basin and North China. The Madden-Julian oscillation (MJO) during the summer and its impact on rainfall in China are investigated by conducting observational analyses and diagnostic linear baroclinic model (LBM) experiments. A significant MJO activity in the summer is observed with three MJO episodes corresponding to three stages of rainfall in China. The LBM is utilized to diagnose the circulation response to the tropical heating forcing associated with each MJO episode. The results suggest that much of the atmospheric circulation linked to the anomalous rainfall is attributed to the strong MJO episodes. During June-July (August), the enhanced (suppressed) convection over the tropical Indian Ocean along with the suppressed (enhanced) convection over the South China Sea (SCS) to the western Pacific excite an East Asian-Pacific' north-eastward-propagating Rossby wave train, inducing anomalous low-level anticyclonic (cyclonic) flows over the northern SCS and the western North Pacific but cyclonic (anticyclonic) flows over North China. They lead to a westward (eastward) shift and strengthening (weakening) of the western Pacific subtropical high, thus favouring the intensification (suppression) in rainfall over the Yangtze River Basin and North China along with the opposite variation over South China. Relative to the first MJO episode, the MJO convection in the second episode causes a northward movement of the anomalous rainfall band from the Yangtze River Basin to North China. Apart from the impact on the above regions, the first (second and third) MJO episode favours an increase (reduction) in rainfall over Northeast China. |
英文关键词 | Madden-Julian oscillation summer rainfall in 2016 convective heating anomaly Rossby wave train |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428880600032 |
WOS关键词 | WESTERN NORTH PACIFIC ; INTRASEASONAL OSCILLATION ; SST ANOMALIES ; MONSOON ; PRECIPITATION ; CIRCULATION ; MECHANISMS ; WINTER ; ASIA ; CONVECTION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/36681 |
专题 | 气候变化 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, Nansen Zhu Int Res Ctr, POB 9804, Beijing, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, Climate Change Res Ctr, POB 9804, Beijing, Peoples R China; 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China; 4.China Univ Geosci, Dept Atmospher Sci, Wuhan, Hubei, Peoples R China; 5.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Shao, Xiaolu,Li, Shuanglin,Liu, Na,et al. The Madden-Julian oscillation during the 2016 summer and its possible impact on rainfall in China[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(5):2575-2589. |
APA | Shao, Xiaolu,Li, Shuanglin,Liu, Na,&Song, Jie.(2018).The Madden-Julian oscillation during the 2016 summer and its possible impact on rainfall in China.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(5),2575-2589. |
MLA | Shao, Xiaolu,et al."The Madden-Julian oscillation during the 2016 summer and its possible impact on rainfall in China".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.5(2018):2575-2589. |
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