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	Spatial and temporal variability of precipitation extrema in the Haihe River Basin, China
	Sang Y. F. ; Wang Z. G. ; Liu C. M.
	2014
关键词	precipitation precipitation extrema climate change urbanization drought Haihe River Basin climate-change uncertainty multiscale canada risk
英文摘要	In this article, we investigated the variability of precipitation conditions in the Haihe River basin (HRB) during 1961-2010 by analyzing four daily precipitation scenarios. These scenarios were set with the values of, equal to 0 mm/day, 10-20 mm/day, 20-50 mm/day, and greater than 50 mm/day, which were denoted as P0, P10, P20, and P50, respectively. Results indicate that the mean values of daily precipitation decline, and its fluctuation becomes weak with years in HRB. The contour of daily precipitation with the mean value of 1.4 mm/day moves more than 100 km toward southeast in the basin from 1960s to 2000s. The variations of four precipitation scenarios show difference. The Tianjin and Langfang cities were the P0 drought center in HRB after 1980s, and the days and regions without precipitation increase with years. The magnitude of P10 extrema shows no significant changes over the last 50 years, but the rainfall centers vary with areas in HRB. The magnitude of P20 extrema shows no obvious changes in 1961-2000 but increases in 2000s. The magnitude of P50 extrema obviously declines in the last 50 years, with the rainfall center moving from northeast to south of HRB. Urbanization impacts are reflected in some cities in 1980s and 1990s, but after 2000, the urbanization impacts were not clearly detected due to the significant precipitation decreases in HRB. In summary, precipitation decrease is caused by the decreases of P50 extrema rather than P10 and P20 extrema in HRB, which would be favorable for the flood resources utilization through ample-low flow operations over space. Copyright (c) 2012 John Wiley & Sons, Ltd.
出处	Hydrological Processes
卷	28
期	3
页	926-932
收录类别	SCI
语种	英语
ISSN号	0885-6087
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/29633]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Sang Y. F.,Wang Z. G.,Liu C. M.. Spatial and temporal variability of precipitation extrema in the Haihe River Basin, China. 2014.

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