Changes in extreme precipitation in the Yangtze River basin and its association with global mean temperature and ENSO

doi:10.1002/joc.5311

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 生态过程与重建研究中心

	Changes in extreme precipitation in the Yangtze River basin and its association with global mean temperature and ENSO
	Lu, Mingquan 1,2; Wu, Sheng-Jun1 ; Chen, Jilong1 ; Chen, Chundi1 ; Wen, Zhaofei1 ; Huang, Yuanyang1
刊名	INTERNATIONAL JOURNAL OF CLIMATOLOGY
	2018-03-30
卷号	38 期号:4 页码:1989-2005
关键词	extreme precipitation generalized extreme value (GEV) distribution El Nino-Southern Oscillation global temperature Yangtze River basin
ISSN号	0899-8418
DOI	10.1002/joc.5311
英文摘要	Extreme precipitation events may lead to secondary disasters such as floods, landslides and erosion. The Yangtze River basin (YRB), which is home to a large population, is susceptible to flooding associated with heavy rainfall. Many dams have been constructed or planned for in the YRB. Understanding the changing behaviour of extreme precipitation and its relationship with other climatic factors will increase planners' ability to plan for, manage and respond to related flood events. This study investigated the trends in annual and seasonal maximum daily precipitation (Mx1day) using the iterative Mann-Kendall test. The non-stationary Mx1day values were modelled to detect whether such changes were associated with rising local temperature (LTEM), global surface temperature (GTEM) or the El Nino-Southern Oscillation (ENSO). Location and scale parameters were considered individually in the non-stationary generalized extreme value model during this study. Rising trends in annual Mx1day were identified at 73% of the stations studied. The June-July-August seasonal Mx1day exhibited the most pronounced increase among the four seasons. When location and scale were considered, 78 stations and 31 stations exhibited non-stationary Mx1day, respectively. The impacts of both LTEM and ENSO on observed annual Mx1day in the YRB did not have field significance, while the impacts of GTEM did. At the YRB scale, the median sensitivity of the annual Mx1day to GTEM was 7.05% degrees C-1, while the median sensitivity of the annual Mx1day to LTEM was only 0.8% degrees C-1. The relationship between annual Mx1day and GTEM was more suitable for the Clausius-Clapeyron equation. The relationships between ENSO and observed seasonal Mx1day in March-April-May, June-July-August (JJA) and September-October-November (SON) were not field significant. However, a significant negative correlation between December-January-February Mx1day and ENSO was identified. The opposite effects of ENSO on extreme precipitation in JJA and SON may weaken the influence of ENSO on annual Mx1day.
资助项目	National Natural Science Foundation of China[41401633]
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	WILEY
WOS记录号	WOS:000427011700028
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/6266]
专题	生态过程与重建研究中心
通讯作者	Wu, Sheng-Jun
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Lu, Mingquan,Wu, Sheng-Jun,Chen, Jilong,et al. Changes in extreme precipitation in the Yangtze River basin and its association with global mean temperature and ENSO[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(4):1989-2005.
APA	Lu, Mingquan,Wu, Sheng-Jun,Chen, Jilong,Chen, Chundi,Wen, Zhaofei,&Huang, Yuanyang.(2018).Changes in extreme precipitation in the Yangtze River basin and its association with global mean temperature and ENSO.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(4),1989-2005.
MLA	Lu, Mingquan,et al."Changes in extreme precipitation in the Yangtze River basin and its association with global mean temperature and ENSO".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.4(2018):1989-2005.