GSTDTAP  > 气候变化
DOI10.1007/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
ISSN0930-7575
EISSN1432-0894
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
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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
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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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