Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021WR030437 |
Regionalization for ungauged catchments – lessons learned from a comparative large-sample study | |
Sandra Pool; Marc Vis; Jan Seibert | |
2021-08-30 | |
发表期刊 | Water Resources Research |
出版年 | 2021 |
英文摘要 | Model parameter values for ungauged catchments can be regionalized from hydrologically similar gauged catchments. Achieving reliable and robust predictions in ungauged catchments by regionalization, however, is still a major challenge. Here, we conduct a comparative assessment of nineteen regionalization approaches based on previously published literature to contribute new insights into their performance in different geographic regions. The approaches use geographical information, physical catchment attributes, hydrological signatures, or a combination thereof to select donor catchments and to subsequently transfer their entire parameter sets to the ungauged receiver catchment. Each regionalization approach was tested in a leave-one-out cross-validation with a bucket-type catchment model (the HBV model) using 671 gauged catchments in the United States with a diverse hydroclimatology. We then evaluated regionalization performance for several hydrograph aspects, compared it against calibration and regionalization benchmarks, and linked it to catchment descriptors. The results of this large-sample regionalization study can be summarized in three major lessons: (1) Catchments can benefit from a well-chosen regionalization approach independent of their geographic region and independent of how well they can be modeled or regionalized at best. (2) Almost perfect donors exist for most catchments and an excellent relative model performance can be reached for most catchments with current regionalization approaches. This implies that there is considerable potential for improvement in the prediction in ungauged catchments. (3) The ranking of regionalization approaches depends on how the predicted hydrographs are evaluated. These findings indicate that a multi-criteria evaluation is essential for a robust assessment of regionalization performance. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/337569 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Sandra Pool,Marc Vis,Jan Seibert. Regionalization for ungauged catchments – lessons learned from a comparative large-sample study[J]. Water Resources Research,2021. |
APA | Sandra Pool,Marc Vis,&Jan Seibert.(2021).Regionalization for ungauged catchments – lessons learned from a comparative large-sample study.Water Resources Research. |
MLA | Sandra Pool,et al."Regionalization for ungauged catchments – lessons learned from a comparative large-sample study".Water Resources Research (2021). |
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