globalchange  > 气候减缓与适应
DOI: 10.1002/2017JD027092
Scopus记录号: 2-s2.0-85040781151
论文题名:
Decadal Shift in West China Autumn Precipitation and its Association With Sea Surface Temperature
作者: Wei T.; He S.; Yan Q.; Dong W.; Wen X.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:2
起始页码: 835
结束页码: 847
语种: 英语
英文关键词: decadal shift ; numerical simulation ; sea surface temperature ; West China autumn precipitation
Scopus关键词: air-sea interaction ; annual cycle ; atmospheric circulation ; autumn ; decadal variation ; meridional circulation ; monsoon ; numerical method ; precipitation (climatology) ; precipitation assessment ; Rossby wave ; sea surface temperature ; warm pool ; water vapor ; China ; Pacific Ocean ; Pacific Ocean (North) ; Pacific Ocean (West)
英文摘要: West China autumn precipitation (WCAP) is the final stage of the rainy season in mainland China and is characterized as the secondary peak in annual cycle of precipitation in West China. This study reveals that WCAP experienced a significant interdecadal shift around the mid-1980s, with greatly reduced precipitation after this shift. Features related to the decrease in WCAP include the weakening of warm, wet southerlies prevailing from the oceans to inland China, the weakened Eurasian pattern, and the southward displacement of the East Asian jet stream (EAJS). Further analysis indicates that the interdecadal changes in WCAP may be attributed to the interdecadal increasing of sea surface temperature (SST) in the Indo-Pacific warm pool (SSTIOP), North Pacific (SSTNP), and central equatorial Pacific (SSTCEP) after the 1980s. The warmer SSTIOP contributes to a weaker meridional land-sea thermal contrast, which inducts an anomalous local meridional circulation and northerly. The warmer SSTNP stimulates a Rossby wave train that leads to weakened West Pacific subtropical high and accompanying cyclonic circulation anomaly, hindering the transport of water vapor inland from the oceans. The increased SSTCEP leads to the southward displacement of the EAJS and its secondary circulation, generating an anomalous descending branch and reduced WCAP. Numerical simulations further support the conclusions derived from the diagnostic analysis that the decadal warming of the SSTIOP, SSTNP, and SSTCEP synergistically contributes to the reduction of WCAP after the 1980s. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114662
Appears in Collections:气候减缓与适应

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作者单位: State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China; Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway; Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster, Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; School of Atmospheric Sciences, Sun Yat-Sen University, Guangzhou, China; Zhuhai Joint Innovative Center for Climate-Environment-Ecosystem, Future Earth Research Institute, Beijing Normal University, Zhuhai, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China; College of Atmospheric Sciences, Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu, China

Recommended Citation:
Wei T.,He S.,Yan Q.,et al. Decadal Shift in West China Autumn Precipitation and its Association With Sea Surface Temperature[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(2)
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