Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai–Tibet Plateau
Increased attention directed at frozen soil hydrology has been prompted by climate change. In spite of an increasing number of field measurements and modeling studies, the impact of frozen soil on hydrological processes at the catchment scale is still unclear. However, frozen soil hydrology models h...
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Copernicus Publications
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00062286 2023-05-15T17:58:14+02:00 Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai–Tibet Plateau Gao, Hongkai Han, Chuntan Chen, Rensheng Feng, Zijing Wang, Kang Fenicia, Fabrizio Savenije, Hubert 2022-08 electronic https://doi.org/10.5194/hess-26-4187-2022 https://noa.gwlb.de/receive/cop_mods_00062286 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061597/hess-26-4187-2022.pdf https://hess.copernicus.org/articles/26/4187/2022/hess-26-4187-2022.pdf eng eng Copernicus Publications Hydrology and Earth System Sciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2100610 -- http://www.hydrol-earth-syst-sci.net/volumes_and_issues.html -- 1607-7938 https://doi.org/10.5194/hess-26-4187-2022 https://noa.gwlb.de/receive/cop_mods_00062286 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061597/hess-26-4187-2022.pdf https://hess.copernicus.org/articles/26/4187/2022/hess-26-4187-2022.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2022 ftnonlinearchiv https://doi.org/10.5194/hess-26-4187-2022 2022-08-14T23:11:52Z Increased attention directed at frozen soil hydrology has been prompted by climate change. In spite of an increasing number of field measurements and modeling studies, the impact of frozen soil on hydrological processes at the catchment scale is still unclear. However, frozen soil hydrology models have mostly been developed based on a bottom-up approach, i.e., by aggregating prior knowledge at the pixel scale, which is an approach notoriously suffering from equifinality and data scarcity. Therefore, in this study, we explore the impact of frozen soil at the catchment scale, following a top-down approach, implying the following sequence: expert-driven data analysis → qualitative perceptual model → quantitative conceptual model → testing of model realism. The complex mountainous Hulu catchment, northeast of the Qinghai–Tibet Plateau (QTP), was selected as the study site. First, we diagnosed the impact of frozen soil on catchment hydrology, based on multi-source field observations, model discrepancy, and our expert knowledge. The following two new typical hydrograph properties were identified: the low runoff in the early thawing season (LRET) and the discontinuous baseflow recession (DBR). Second, we developed a perceptual frozen soil hydrological model to explain the LRET and DBR properties. Third, based on the perceptual model and a landscape-based modeling framework (FLEX-Topo), a semi-distributed conceptual frozen soil hydrological model (FLEX-Topo-FS) was developed. The results demonstrate that the FLEX-Topo-FS model can represent the effect of soil freeze–thaw processes on hydrologic connectivity and groundwater discharge and significantly improve hydrograph simulation, including the LRET and DBR events. Furthermore, its realism was confirmed by alternative multi-source and multi-scale observations, particularly the freezing and thawing front in the soil, the lower limit of permafrost, and the trends in groundwater level variation. To the best of our knowledge, this study is the first report of LRET and DBR ... Article in Journal/Newspaper permafrost Niedersächsisches Online-Archiv NOA Hulu ENVELOPE(8.610,8.610,62.837,62.837) Hydrology and Earth System Sciences 26 15 4187 4208 |
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article Verlagsveröffentlichung Gao, Hongkai Han, Chuntan Chen, Rensheng Feng, Zijing Wang, Kang Fenicia, Fabrizio Savenije, Hubert Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai–Tibet Plateau |
topic_facet |
article Verlagsveröffentlichung |
description |
Increased attention directed at frozen soil hydrology has been prompted by climate change. In spite of an increasing number of field measurements and modeling studies, the impact of frozen soil on hydrological processes at the catchment scale is still unclear. However, frozen soil hydrology models have mostly been developed based on a bottom-up approach, i.e., by aggregating prior knowledge at the pixel scale, which is an approach notoriously suffering from equifinality and data scarcity. Therefore, in this study, we explore the impact of frozen soil at the catchment scale, following a top-down approach, implying the following sequence: expert-driven data analysis → qualitative perceptual model → quantitative conceptual model → testing of model realism. The complex mountainous Hulu catchment, northeast of the Qinghai–Tibet Plateau (QTP), was selected as the study site. First, we diagnosed the impact of frozen soil on catchment hydrology, based on multi-source field observations, model discrepancy, and our expert knowledge. The following two new typical hydrograph properties were identified: the low runoff in the early thawing season (LRET) and the discontinuous baseflow recession (DBR). Second, we developed a perceptual frozen soil hydrological model to explain the LRET and DBR properties. Third, based on the perceptual model and a landscape-based modeling framework (FLEX-Topo), a semi-distributed conceptual frozen soil hydrological model (FLEX-Topo-FS) was developed. The results demonstrate that the FLEX-Topo-FS model can represent the effect of soil freeze–thaw processes on hydrologic connectivity and groundwater discharge and significantly improve hydrograph simulation, including the LRET and DBR events. Furthermore, its realism was confirmed by alternative multi-source and multi-scale observations, particularly the freezing and thawing front in the soil, the lower limit of permafrost, and the trends in groundwater level variation. To the best of our knowledge, this study is the first report of LRET and DBR ... |
format |
Article in Journal/Newspaper |
author |
Gao, Hongkai Han, Chuntan Chen, Rensheng Feng, Zijing Wang, Kang Fenicia, Fabrizio Savenije, Hubert |
author_facet |
Gao, Hongkai Han, Chuntan Chen, Rensheng Feng, Zijing Wang, Kang Fenicia, Fabrizio Savenije, Hubert |
author_sort |
Gao, Hongkai |
title |
Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai–Tibet Plateau |
title_short |
Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai–Tibet Plateau |
title_full |
Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai–Tibet Plateau |
title_fullStr |
Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai–Tibet Plateau |
title_full_unstemmed |
Frozen soil hydrological modeling for a mountainous catchment northeast of the Qinghai–Tibet Plateau |
title_sort |
frozen soil hydrological modeling for a mountainous catchment northeast of the qinghai–tibet plateau |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/hess-26-4187-2022 https://noa.gwlb.de/receive/cop_mods_00062286 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061597/hess-26-4187-2022.pdf https://hess.copernicus.org/articles/26/4187/2022/hess-26-4187-2022.pdf |
long_lat |
ENVELOPE(8.610,8.610,62.837,62.837) |
geographic |
Hulu |
geographic_facet |
Hulu |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Hydrology and Earth System Sciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2100610 -- http://www.hydrol-earth-syst-sci.net/volumes_and_issues.html -- 1607-7938 https://doi.org/10.5194/hess-26-4187-2022 https://noa.gwlb.de/receive/cop_mods_00062286 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00061597/hess-26-4187-2022.pdf https://hess.copernicus.org/articles/26/4187/2022/hess-26-4187-2022.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/hess-26-4187-2022 |
container_title |
Hydrology and Earth System Sciences |
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26 |
container_issue |
15 |
container_start_page |
4187 |
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4208 |
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1766166806852009984 |