globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosres.2018.12.033
Scopus记录号: 2-s2.0-85059567220
论文题名:
Statistical analyses of spatial and temporal variabilities in total, daytime, and nighttime precipitation indices and of extreme dry/wet association with large-scale circulations of Southwest China, 1961–2016
作者: Cheng Q.; Gao L.; Zuo X.; Zhong F.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 219
起始页码: 166
结束页码: 182
语种: 英语
英文关键词: Daytime and nighttime precipitation ; Extreme precipitation ; Large-scale circulation ; Southwest China
Scopus关键词: Climatology ; Lanthanum ; Precipitation (meteorology) ; Cross-wavelet analysis ; Extreme precipitation ; Large-scale circulation ; Meteorological station ; Precipitation indices ; Southwest China ; Spatial and temporal variability ; Standardized precipitation index ; Palladium compounds ; atmospheric circulation ; extreme event ; precipitation assessment ; spatial variation ; statistical analysis ; temporal variation ; China
英文摘要: The spatial and temporal variabilities of total precipitation (TP), daytime precipitation (DP), nighttime precipitation (NP), and their corresponding extremes in Southwest China (SWC) were investigated based on daily precipitation records from 112 meteorological stations obtained during 1961–2016. The standardized precipitation index was used to analyze extreme dry/wet events, and correlations with climate indices were detected using cross-wavelet analysis. The results indicated that on annual and seasonal scales, the majority of meteorological station records displayed downward trends for TP, DP, and NP (except in spring), which were particularly evident in autumn. Spatially, on both annual and seasonal timescales, higher values of TP and NP were found in southwestern parts of the Hengduan Mountains (HDM), southern and eastern parts of the Yunnan–Guizhou Plateau (YGP), and in southwestern and southeastern areas of the Sichuan Basin (SCB). The occurrences of dry/wet events in SWC were found correlated particularly well with ENSO. Furthermore, extreme dry/wet events were found to occur during El Niño and La Niña years, whereas the frequency of extreme dry events was found higher than extreme wet events during both El Niño and La Niña years since 2001. The findings of this study suggest that TP (TPd), DP (DPd), and NP (NPd) all showed decreasing trends, while extreme precipitation showed an increasing trend, indicating that both the intensity and the concentration of precipitation are increasing. Therefore, the risks of heavy precipitation and flooding are likely to increase in SWC, particularly in the SCB and that extreme events might be strengthened in certain seasons. © 2019 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122316
Appears in Collections:气候变化事实与影响

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作者单位: Northwest Institute of Eco-Environmental and Resources Research, Chinese Academy of Sciences, Lanzhou, 730000, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Institute of Geography, Fujian Normal University, Fuzhou, 350007, China; Fujian Provincial Engineering Research Center for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou, 350007, China; State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, 350007, China

Recommended Citation:
Cheng Q.,Gao L.,Zuo X.,et al. Statistical analyses of spatial and temporal variabilities in total, daytime, and nighttime precipitation indices and of extreme dry/wet association with large-scale circulations of Southwest China, 1961–2016[J]. Atmospheric Research,2019-01-01,219
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