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DOI | 10.1007/s00382-018-4507-6 |
Tibetan Plateau heating as a driver of monsoon rainfall variability in Pakistan | |
Wang, Ziqian1; Yang, Song1; Duan, Anmin2; Hua, Wei3; Ullah, Kalim4; Liu, Senfeng2 | |
2019-05-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52页码:6121-6130 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Pakistan |
英文摘要 | Pakistan summer monsoon rainfall consists of a large portion of the local annual total rainfall, and in the recent monsoon seasons, prolonged periods of anomalous rainfall and excessive flooding have appeared in Pakistan. A full understanding of the monsoon rainfall variability is important for the sustainable development of the country. Based on multiple data analyses and the weather research and forecasting model, the potential impact of Tibetan Plateau (TP) heating on the interannual variability of Pakistan monsoon rainfall is investigated. It is observed that a significant negative relationship exists between the thermal forcing over the southeastern TP and Pakistan monsoon rainfall in July-August. Both the data analyses and model sensitivity experiments identify that the TP heating drives a Rossby wave response in the upper atmosphere characterized with an anticyclonic anomaly over the southern TP but a cyclonic anomaly to the north. This dipole pattern of anomalous circulation induces an evident upper-level convergence over Pakistan, corresponding with remarkable vertical sinking motion. Meanwhile, in the lower troposphere, the TP heating causes anomalous westerly wind along the Himalayas over the northern India continent. Such westerly anomaly further induces less water vapor transport into Pakistan from the Bay of Bengal. Therefore, both the dynamic and thermodynamic processes regulated by positive TP heating are not beneficial for the occurrence of monsoon rainfall in Pakistan. This study proposes a new potential mechanism in which TP heating acts as a driver of Pakistan monsoon rainfall variability on interannual time scales. |
英文关键词 | Pakistan monsoon rainfall Tibetan Plateau Thermal forcing Interannual variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000465441400060 |
WOS关键词 | SPRING SENSIBLE HEAT ; INTERANNUAL VARIABILITY ; NORTHERN PAKISTAN ; SUMMER MONSOON ; PRECIPITATION ; SOURCE/SINK ; WEATHER ; PATTERN ; IMPACT ; CHINA |
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/182636 |
专题 | 气候变化 |
作者单位 | 1.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Sch Atmospher Sci, 135 West Xingang Rd, Guangzhou 510275, Guangdong, Peoples R China; 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing, Peoples R China; 3.Chengdu Univ Informat Technol, Sch Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu, Sichuan, Peoples R China; 4.COMSATS Inst Informat Technol, Dept Meteorol, Islamabad, Pakistan |
推荐引用方式 GB/T 7714 | Wang, Ziqian,Yang, Song,Duan, Anmin,et al. Tibetan Plateau heating as a driver of monsoon rainfall variability in Pakistan[J]. CLIMATE DYNAMICS,2019,52:6121-6130. |
APA | Wang, Ziqian,Yang, Song,Duan, Anmin,Hua, Wei,Ullah, Kalim,&Liu, Senfeng.(2019).Tibetan Plateau heating as a driver of monsoon rainfall variability in Pakistan.CLIMATE DYNAMICS,52,6121-6130. |
MLA | Wang, Ziqian,et al."Tibetan Plateau heating as a driver of monsoon rainfall variability in Pakistan".CLIMATE DYNAMICS 52(2019):6121-6130. |
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