globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-809-2020
论文题名:
A universal multifractal approach to assessment of spatiotemporal extreme precipitation over the Loess Plateau of China
作者: Zhang J.; Gao G.; Fu B.; Wang C.; Gupta H.V.; Zhang X.; Li R.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:2
起始页码: 809
结束页码: 826
语种: 英语
Scopus关键词: Fractals ; Landforms ; Precipitation (meteorology) ; Probability distributions ; Sediments ; Storms ; Atmospheric circulation patterns ; East Asian monsoon ; Extreme precipitation ; Formal framework ; Loess plateau of chinas ; Segmentation algorithms ; Spatio-temporal variation ; Universal multi-fractals ; Hazards ; assessment method ; atmospheric circulation ; precipitation (climatology) ; spatiotemporal analysis ; tropical cyclone ; China ; Loess Plateau
英文摘要: Extreme precipitation (EP) is a major external agent driving various natural hazards in the Loess Plateau (LP), China. However, the characteristics of the spatiotemporal EP responsible for such hazardous situations remain poorly understood. We integrate universal multifractals with a segmentation algorithm to characterize a physically meaningful threshold for EP (EPT). Using daily data from 1961 to 2015, we investigate the spatiotemporal variation of EP over the LP. Our results indicate that (with precipitation increasing) EPTs range from 17.3 to 50.3 mm d-1, while the mean annual EP increases from 35 to 138 mm from the northwestern to the southeastern LP. Further, historically, the EP frequency (EPF) has spatially varied from 54 to 116 d, with the highest EPF occurring in the mid-southern and southeastern LP where precipitation is much more abundant. However, EP intensities tend to be strongest in the central LP, where precipitation also tends to be scarce, and get progressively weaker as we move towards the margins (similarly to EP severity). An examination of atmospheric circulation patterns indicates that the central LP is the inland boundary with respect to the reach and impact of tropical cyclones in China, resulting in the highest EP intensities and EP severities being observed in this area. Under the control of the East Asian monsoon, precipitation from June to September accounts for 72 % of the total amount, and 91 % of the total EP events are concentrated between June and August. Further, EP events occur, on average, 11 d earlier than the wettest part of the season. These phenomena are responsible for the most serious natural hazards in the LP, especially in the central LP region. Spatiotemporally, 91.4 % of the LP has experienced a downward trend in precipitation, whereas 62.1 % of the area has experienced upward trends in the EP indices, indicating the potential risk of more serious hazardous situations. The universal multifractal approach considers the physical processes and probability distribution of precipitation, thereby providing a formal framework for spatiotemporal EP assessment at the regional scale. © 2020 Author(s).
Citation statistics:
被引频次[WOS]:24   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162785
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Zhang, J., School of Land Science and Technology, China University of Geosciences, Beijing, 100083, China, State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China, State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yang ling, Shaanxi, 712100, China, Key Laboratory of Land Consolidation and Rehabilitation, Ministry of Natural Resources, Beijing, 100035, China; Gao, G., State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Fu, B., State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Wang, C., State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Gupta, H.V., Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; Zhang, X., State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yang ling, Shaanxi, 712100, China; Li, R., State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yang ling, Shaanxi, 712100, China

Recommended Citation:
Zhang J.,Gao G.,Fu B.,et al. A universal multifractal approach to assessment of spatiotemporal extreme precipitation over the Loess Plateau of China[J]. Hydrology and Earth System Sciences,2020-01-01,24(2)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhang J.]'s Articles
[Gao G.]'s Articles
[Fu B.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Zhang J.]'s Articles
[Gao G.]'s Articles
[Fu B.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhang J.]‘s Articles
[Gao G.]‘s Articles
[Fu B.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.