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	Gradation of complexity and predictability of hydrological processes
	Sang, Yan-Fang1; Singh, Vijay P.2,3; Wen, Jun4; Liu, Changming1
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2015-06-16
卷号	120期号:11页码:5334-5343
关键词	hydrological processes complexity predictability climate change modeling
ISSN号	2169-897X
DOI	10.1002/2014JD022844
通讯作者	Sang, Yan-Fang(sangyf@igsnrr.ac.cn)
英文摘要	Quantification of the complexity and predictability of hydrological systems is important for evaluating the impact of climate change on hydrological processes, and for guiding water activities. In the literature, the focus seems to have been on describing the complexity of spatiotemporal distribution of hydrological variables, but little attention has been paid to the study of complexity gradation, because the degree of absolute complexity of hydrological systems cannot be objectively evaluated. Here we show that complexity and predictability of hydrological processes can be graded into three ranks (low, middle, and high). The gradation is based on the difference in the energy distribution of hydrological series and that of white noise under multitemporal scales. It reflects different energy concentration levels and contents of deterministic components of the hydrological series in the three ranks. Higher energy concentration level reflects lower complexity and higher predictability, but scattered energy distribution being similar to white noise has the highest complexity and is almost unpredictable. We conclude that the three ranks (low, middle, and high) approximately correspond to deterministic, stochastic, and random hydrological systems, respectively. The result of complexity gradation can guide hydrological observations and modeling, and identification of similarity patterns among different hydrological systems.
收录类别	SCI
WOS关键词	MULTISCALE ENTROPY ANALYSIS ; TIME-SERIES ; INFORMATION-THEORY ; PRACTICAL GUIDE ; WAVELET ; VARIABILITY ; BASIN ; CHINA
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000356975700003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555571
专题	寒区旱区环境与工程研究所
通讯作者	Sang, Yan-Fang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 2.Texas A&M Univ, Dept Biol & Agr Engn, College Stn, TX USA 3.Texas A&M Univ, Zachry Dept Civil Engn, College Stn, TX USA 4.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Sang, Yan-Fang,Singh, Vijay P.,Wen, Jun,et al. Gradation of complexity and predictability of hydrological processes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2015,120(11):5334-5343.
APA	Sang, Yan-Fang,Singh, Vijay P.,Wen, Jun,&Liu, Changming.(2015).Gradation of complexity and predictability of hydrological processes.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,120(11),5334-5343.
MLA	Sang, Yan-Fang,et al."Gradation of complexity and predictability of hydrological processes".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 120.11(2015):5334-5343.

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