Regionalization methods for PUB: a comprehensive review of progress after the PUB decade
This paper presents an updated review of model-dependent regionalization methods in hydrology since the PUB decade, incorporating new regions and methodological advancements. Two categories of regionalization methods are discussed: distance-based and regression-based, with various modification appro...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2023-07-01
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| Series: | Hydrology Research |
| Subjects: | |
| Online Access: | http://hr.iwaponline.com/content/54/7/885 |
| _version_ | 1797745701865652224 |
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| author | Xue Yang Fengnian Li Wenyan Qi Mengyuan Zhang Chengxi Yu Chong-Yu Xu |
| author_facet | Xue Yang Fengnian Li Wenyan Qi Mengyuan Zhang Chengxi Yu Chong-Yu Xu |
| author_sort | Xue Yang |
| collection | DOAJ |
| description | This paper presents an updated review of model-dependent regionalization methods in hydrology since the PUB decade, incorporating new regions and methodological advancements. Two categories of regionalization methods are discussed: distance-based and regression-based, with various modification approaches. Several factors affecting the accuracy of regionalization performance are identified, including hydrological models, climate characteristics, data availability, and regionalization techniques. The review concludes that distance-based regionalization methods with an output averaging option from multiple donor catchments are the most statistically reliable, and a threshold of 0.5–0.8 for donor selection is optimal for performance. The parsimonious hydrological model is also recommended, particularly in data-limited contexts. Other insights include the effectiveness of the ensemble concept and limited impact of prior classification. Additionally, it is found that the general performance difference between climatic classes is larger than between methods, and regression-based methods may have large uncertainties in tropical regions. Overall, this study provides practical guidance for improving regionalization studies and advancing the field of hydrology.
HIGHLIGHTS
A deep analysis based on last decade’s regionalization studies over the world.;
The parsimonious hydrological model seems more robust with limited prior knowledge of regionalization.;
Too high threshold (larger than 0.8) to donor selection results in performance deterioration.;
Ensemble concept could help to modify the performance, rather better than the prior classification.;
Climate plays an important role in regionalization.; |
| first_indexed | 2024-03-12T15:27:02Z |
| format | Article |
| id | doaj.art-c69edfcb403443b1b98623efef1da785 |
| institution | Directory Open Access Journal |
| issn | 1998-9563 2224-7955 |
| language | English |
| last_indexed | 2024-03-12T15:27:02Z |
| publishDate | 2023-07-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Hydrology Research |
| spelling | doaj.art-c69edfcb403443b1b98623efef1da7852023-08-10T13:14:40ZengIWA PublishingHydrology Research1998-95632224-79552023-07-0154788590010.2166/nh.2023.027027Regionalization methods for PUB: a comprehensive review of progress after the PUB decadeXue Yang0Fengnian Li1Wenyan Qi2Mengyuan Zhang3Chengxi Yu4Chong-Yu Xu5 State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, Shaanxi 710048, China State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, Shaanxi 710048, China School of Civil Engineering, Lanzhou Jiao Tong University, Lanzhou 730070, China State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, Shaanxi 710048, China State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, Shaanxi 710048, China Department of Geosciences, University of Oslo, P.O. Box 1047 Blindern, Oslo N-0316, Norway This paper presents an updated review of model-dependent regionalization methods in hydrology since the PUB decade, incorporating new regions and methodological advancements. Two categories of regionalization methods are discussed: distance-based and regression-based, with various modification approaches. Several factors affecting the accuracy of regionalization performance are identified, including hydrological models, climate characteristics, data availability, and regionalization techniques. The review concludes that distance-based regionalization methods with an output averaging option from multiple donor catchments are the most statistically reliable, and a threshold of 0.5–0.8 for donor selection is optimal for performance. The parsimonious hydrological model is also recommended, particularly in data-limited contexts. Other insights include the effectiveness of the ensemble concept and limited impact of prior classification. Additionally, it is found that the general performance difference between climatic classes is larger than between methods, and regression-based methods may have large uncertainties in tropical regions. Overall, this study provides practical guidance for improving regionalization studies and advancing the field of hydrology. HIGHLIGHTS A deep analysis based on last decade’s regionalization studies over the world.; The parsimonious hydrological model seems more robust with limited prior knowledge of regionalization.; Too high threshold (larger than 0.8) to donor selection results in performance deterioration.; Ensemble concept could help to modify the performance, rather better than the prior classification.; Climate plays an important role in regionalization.;http://hr.iwaponline.com/content/54/7/885hydrological modelprediction in ungauged basins (pub)regionalization methodsrunoff prediction |
| spellingShingle | Xue Yang Fengnian Li Wenyan Qi Mengyuan Zhang Chengxi Yu Chong-Yu Xu Regionalization methods for PUB: a comprehensive review of progress after the PUB decade Hydrology Research hydrological model prediction in ungauged basins (pub) regionalization methods runoff prediction |
| title | Regionalization methods for PUB: a comprehensive review of progress after the PUB decade |
| title_full | Regionalization methods for PUB: a comprehensive review of progress after the PUB decade |
| title_fullStr | Regionalization methods for PUB: a comprehensive review of progress after the PUB decade |
| title_full_unstemmed | Regionalization methods for PUB: a comprehensive review of progress after the PUB decade |
| title_short | Regionalization methods for PUB: a comprehensive review of progress after the PUB decade |
| title_sort | regionalization methods for pub a comprehensive review of progress after the pub decade |
| topic | hydrological model prediction in ungauged basins (pub) regionalization methods runoff prediction |
| url | http://hr.iwaponline.com/content/54/7/885 |
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