干旱区生态环境知识资源中心(Arid): Impact of the number of donor catchments and the efficiency threshold on regionalization performance of hydrological models

Arid

DOI	10.1016/j.jhydrol.2021.126680
	Impact of the number of donor catchments and the efficiency threshold on regionalization performance of hydrological models
	Qi, Wen-yan; Chen, Jie; Li, Lu; Xu, Chong-Yu; Xiang, Yi-heng; Zhang, Shao-bo; Wang, Hui-Min
通讯作者	Chen, J (corresponding author), Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, 299 Bayi Rd, Wuhan 430072, Hubei, Peoples R China.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2021
卷号	601
英文摘要	Over recent decades, hydrologists have proposed a variety of methods to predict discharge in ungauged catchments, and significant progress has been made in the field of hydrological model parameter regionalization. However, uncertainties from both hydrological models and regionalization methods make it a challenge to draw clear conclusions for some questions in regionalization (e.g., the best performing regionalization method, the optimal number of donor catchments, and the optimal efficiency threshold of donor catchments). In this study, for the first time, we made an attempt to address such questions in one paper through a comprehensive evaluation of model performance by using five regionalization methods with two weighting schemes, two averaging options, five efficiency thresholds, and four lumped hydrological models over a broad set of 3444 catchments under varying hydroclimatic conditions in North America. The results show that: (1) Spatial Proximity with the Inverse Distance Weighting method and the output average option (SPI-out) generally performs better than or comparable to other regionalization methods for different climate regions and hydrological models, while the global mean method performs the worst. (2) The rank of different regionalization methods is similar among different climatic regions and hydrological models. Compared to catchments with other climates, regionalization methods perform worst in the arid regions. (3) The selection of five donors is relatively efficient for distance/attributes-based regionalization approaches with the output averaging option disregarding the efficiency threshold. (4) The differences of median Kling-Gupta efficiency values among thresholds of all, 0.6 and 0.7 are no more than 0.05 for each regionalization method. However, the regionalization performance significantly deteriorates from using efficiency thresholds of 0.7 to 0.9 due to the significant reduction of available donor catchments. Thus, the poorly calibrated catchments may need to be included in the regionalization process, especially when the number of catchments is insufficient.
英文关键词	Regionalization Ungauged catchments Runoff prediction Hydrological models Uncertainty
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000695816300082
WOS关键词	UNGAUGED CATCHMENTS ; CLIMATE-CHANGE ; CONTINUOUS STREAMFLOW ; XINANJIANG MODEL ; GLOBAL CLIMATE ; RUNOFF ; PREDICTIONS ; UNCERTAINTY ; BASINS ; TRANSFERABILITY
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363919
作者单位	[Qi, Wen-yan; Chen, Jie; Xiang, Yi-heng; Zhang, Shao-bo; Wang, Hui-Min] Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, 299 Bayi Rd, Wuhan 430072, Hubei, Peoples R China; [Qi, Wen-yan; Chen, Jie; Xiang, Yi-heng; Zhang, Shao-bo; Wang, Hui-Min] Wuhan Univ, Hubei Key Lab Water Syst Sci Sponge City Construc, Wuhan, Peoples R China; [Li, Lu] Bjerknes Ctr Climate Res, NORCE Norwegian Res Ctr, Bergen, Norway; [Xu, Chong-Yu] Univ Oslo, Dept Geosci, POB 1047 Blindern, N-0316 Oslo, Norway
推荐引用方式 GB/T 7714	Qi, Wen-yan,Chen, Jie,Li, Lu,et al. Impact of the number of donor catchments and the efficiency threshold on regionalization performance of hydrological models[J],2021,601.
APA	Qi, Wen-yan.,Chen, Jie.,Li, Lu.,Xu, Chong-Yu.,Xiang, Yi-heng.,...&Wang, Hui-Min.(2021).Impact of the number of donor catchments and the efficiency threshold on regionalization performance of hydrological models.JOURNAL OF HYDROLOGY,601.
MLA	Qi, Wen-yan,et al."Impact of the number of donor catchments and the efficiency threshold on regionalization performance of hydrological models".JOURNAL OF HYDROLOGY 601(2021).