Journal of Hydrology-Regional Studies最新文献_第5页

Evaluating stream power distribution along river longitudinal profiles using Log S – log A plots

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-13 DOI: 10.1016/j.ejrh.2025.102305

Jui-Tien Tsai , Yen-Yu Chiu , Su-Chin Chen

{"title":"Evaluating stream power distribution along river longitudinal profiles using Log S – log A plots","authors":"Jui-Tien Tsai , Yen-Yu Chiu , Su-Chin Chen","doi":"10.1016/j.ejrh.2025.102305","DOIUrl":"10.1016/j.ejrh.2025.102305","url":null,"abstract":"<div><h3>Study region</h3><div>Eighteen main rivers in Taiwan.</div></div><div><h3>Study focus</h3><div>This study focused on the analysis of total stream power (TSP) and specific stream power (SSP) along river longitudinal profiles, which are critical indicators of river dynamics. A new two-parameter regression model is proposed, addressing inaccuracies in traditional models and providing a more-precise representation of river profiles. By incorporating concavity, drainage area distribution, discharge, and river width relationships, the model identifies the locations of the TSP and SSP peaks. The study employs log (river slope, <em>S</em>) – log (drainage area, <em>A</em>) plots to evaluate the spatial variability of these metrics under diverse geomorphological and hydrological conditions.</div></div><div><h3>New hydrological insights for the region</h3><div>The model was used to categorize 18 rivers in Taiwan into three groups based on river source elevation and drainage area–flow length exponents. Key findings indicate that lower source elevations correspond to increased upstream drainage-area distribution and greater concavity. This highlights the interplay between intrinsic watershed characteristics and external hydrological forces in shaping TSP and SSP distributions. These insights provide a basis for improved river management, sediment transport predictions, and conservation efforts.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"59 ","pages":"Article 102305"},"PeriodicalIF":4.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessing the economic impact of droughts in Europe in a changing climate: A multi-sectoral analysis at regional scale

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-13 DOI: 10.1016/j.ejrh.2025.102296

Corrado Motta , Gustavo Naumann , Diego Gomez , Giuseppe Formetta , Luc Feyen

{"title":"Assessing the economic impact of droughts in Europe in a changing climate: A multi-sectoral analysis at regional scale","authors":"Corrado Motta , Gustavo Naumann , Diego Gomez , Giuseppe Formetta , Luc Feyen","doi":"10.1016/j.ejrh.2025.102296","DOIUrl":"10.1016/j.ejrh.2025.102296","url":null,"abstract":"<div><h3>Study region</h3><div>The EU member states plus UK, Norway, and Switzerland.</div></div><div><h3>Study Focus</h3><div>In the recent past, Europe has faced several extreme drought events that have generated high economic losses across socioeconomic sectors. Climate change is expected to alter the frequency and intensity of these events. In order to increase drought resilience through adaptation it is essential to discern regional and sectoral drought risk patterns that account for the specific characteristics of local territories. In this study, we integrate drought hazard modelling with regional exposure mapping and vulnerability assessment to quantify drought impacts in drought-sensitive sectors across 1366 administrative territorial units of Europe, considering present climate conditions and a range of global warming levels.</div></div><div><h3>New hydrological insights for the region</h3><div>Our results show a strong regional disparity in future drought impacts, with an overall increase in drought losses in southern, south-eastern, and western regions of Europe and a decrease in northern regions. Regional differences are amplified with increasing global warming and depend on the intensity of the drought, modulated by the exposure and vulnerability of drought-sensitive socioeconomic sectors. In some of the most impacted regions, economic losses could become substantial, with expected annual losses corresponding to 1–2 % of regional gross domestic product, while the agriculture sector could lose 15 % of its gross value added with high levels of global warming.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"59 ","pages":"Article 102296"},"PeriodicalIF":4.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An integrated hydrological model to simulate terrestrial water storage in a large river basin: Evaluation using GRACE data

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-13 DOI: 10.1016/j.ejrh.2025.102309

Sai Srinivas Gorugantula, BVN P Kambhammettu

{"title":"An integrated hydrological model to simulate terrestrial water storage in a large river basin: Evaluation using GRACE data","authors":"Sai Srinivas Gorugantula, BVN P Kambhammettu","doi":"10.1016/j.ejrh.2025.102309","DOIUrl":"10.1016/j.ejrh.2025.102309","url":null,"abstract":"<div><h3>Study region</h3><div>Krishna River Basin, India</div></div><div><h3>Study focus</h3><div>Integrated hydrological models that simulate surface and subsurface processes, and their interactions in a single framework are essential for effective management of large-scale river basins. This research is aimed at developing an integrated hydrological model for the Krishna River Basin (KRB), India by tightly coupling a semi-distributed hydrological model (SWAT) with a fully distributed groundwater model (MODFLOW).</div></div><div><h3>New hydrological insights for the region</h3><div>For the first time, the coupled SWAT-MODFLOW model was applied to a large (>250,000 km<sup>2</sup>), conjunctively managed, complexly interacted river basin. SWAT simulated streamflows and evapotranspiration (ET) for the seven sub-basins agree with gauge flows (R: 0.45–0.85; NSE: 0.2–0.69) and MODIS-derived ET fluxes (R: 0.18–0.81; NSE: −3.18–0.66). However, MODFLOW simulated heads are in less agreement with observed groundwater levels (R: −0.6–0.6) due to spatial averaging. The coupled SWAT-MODFLOW is used to estimate terrestrial water storage anomalies (TWSA) at sub-basin level and validated with downscaled GRACE data at 0.25<sup>°</sup> resolution. Model performance is good for the lower reaches (NSE >0.3; R >0.65) with high flow exchanges and is low for the upper reaches due to underestimation of individual fluxes (NSE <0.3; R <0.65). We observed a basin-wide decline in TWSA during the simulation at a rate of 1.45 mm/month. Our findings can help in developing contextual plans for effective management of water resources.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"59 ","pages":"Article 102309"},"PeriodicalIF":4.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data-driven assessment of climate change and vegetative cover dynamics in traditional oases

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-13 DOI: 10.1016/j.ejrh.2025.102266

Elisa Baioni, Giulia Fiantanese, Giovanni Michele Porta

{"title":"Data-driven assessment of climate change and vegetative cover dynamics in traditional oases","authors":"Elisa Baioni, Giulia Fiantanese, Giovanni Michele Porta","doi":"10.1016/j.ejrh.2025.102266","DOIUrl":"10.1016/j.ejrh.2025.102266","url":null,"abstract":"<div><h3>Study region:</h3><div>Abiod Valley, Aurès region, Algeria.</div></div><div><h3>Study focus:</h3><div>This work focuses on the relation between climatic forcing and vegetation cover dynamics in traditional oases. This study pursues two main objectives: (1) estimate the vegetative surface cover of traditional oases from satellite images, (2) quantify the impact of climatic variables on vegetation dynamics and assess future scenarios. We propose a methodology that leverages satellite imagery and derived indices (NDVI, NDMI) to quantify vegetation cover and water stress events at the oasis spatial scale. We then assess the feedback between climate and vegetation cover at monthly and yearly scale through multivariate analyses based on vector autoregression (VAR) and vector error correction (VEC) models.</div></div><div><h3>New hydrological insights for the region:</h3><div>Our findings reveal an appreciable decrease in vegetation cover over the last decade across three considered traditional oases in the study region. The monthly scale analysis suggests a lagged effect of climatic variables, especially cumulative precipitation, on vegetation water stress. The long term VEC prediction of climatic variables aligns with GDDP-CMIP6 climate projections, forecasting an increase in average temperature and potential evapo-transpiration. A significant decline in vegetative surface cover is predicted by 2050 from the analysis of yearly data, highlighting the critical need for water management interventions to safeguard oasis ecosystem and prevent desertification.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"59 ","pages":"Article 102266"},"PeriodicalIF":4.7,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrologic pathways and nutrient loading in the headwaters of the Western Lake Erie Basin

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-08 DOI: 10.1016/j.ejrh.2025.102275

Mark R. Williams , Chad J. Penn , Kevin W. King

{"title":"Hydrologic pathways and nutrient loading in the headwaters of the Western Lake Erie Basin","authors":"Mark R. Williams , Chad J. Penn , Kevin W. King","doi":"10.1016/j.ejrh.2025.102275","DOIUrl":"10.1016/j.ejrh.2025.102275","url":null,"abstract":"<div><h3>Study region</h3><div>Western Lake Erie Basin (WLEB). The WLEB is a flat, artificially drained, and intensively managed agricultural region typical of the U.S. Midwest.</div></div><div><h3>Study focus</h3><div>The study objective was to quantify hydrologic pathways using tracer-based hydrograph separation in a headwater watershed (19 km<sup>2</sup>) of the WLEB and assess relationships between water sources and fluxes and nutrient delivery. High-frequency measurement of two tracers (oxygen-18, δ<sup>18</sup>O; electrical conductivity, EC) along with discharge and nutrient concentration (nitrogen, N; phosphorus, P) was conducted at the watershed outlet (2017–2020).</div></div><div><h3>New hydrological insights for the region</h3><div>Results provide new insights into hydrologic and nutrient transport processes in artificially drained agricultural watersheds. Findings showed that 76 % discharge occurred during the winter and spring due to a threshold relationship with precipitation and soil moisture deficit. Hydrograph separation using δ<sup>18</sup>O and EC provided similar estimates of event water (26 ± 13 % and 26 ± 11 %, respectively), but substantial differences (up to 21 %) were observed between tracers for individual storms. Annually, event water comprised 13–27 % of discharge. Nutrient loads during storm events were strongly correlated to discharge, as flow-weighted mean concentrations (FWMCs) were consistent among storms and seasons. Both dissolved reactive P and ammonium-N FWMC were correlated to water sources. Findings suggest that decreasing discharge, decreasing the nutrient supply, and enhancing nutrient removal within ditch networks are needed to decrease nutrient loading drained watersheds in the WLEB.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"58 ","pages":"Article 102275"},"PeriodicalIF":4.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-year average water vapor characteristics and potential sources and transport pathways of intense water vapor during extreme precipitation events in the Ili River Valley, China

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-08 DOI: 10.1016/j.ejrh.2025.102278

Na Guo , Fulong Chen , Chaofei He , Tongxia Wang , Aihua Long , Xuewen Xu

{"title":"Multi-year average water vapor characteristics and potential sources and transport pathways of intense water vapor during extreme precipitation events in the Ili River Valley, China","authors":"Na Guo , Fulong Chen , Chaofei He , Tongxia Wang , Aihua Long , Xuewen Xu","doi":"10.1016/j.ejrh.2025.102278","DOIUrl":"10.1016/j.ejrh.2025.102278","url":null,"abstract":"<div><h3><em>Study region</em>: Ili River Valley, China</h3><div><em>Study focus</em>: The spatial and temporal variations of water vapor content and precipitation conversion efficiency in the Ili River Valley from 1979 to 2022 are quantified using the reanalysis dataset, and the water vapor transport characteristics of the basin are investigated. Finally, potential water vapor sources, contributions, and transport pathways during extreme precipitation in the Ili Valley over the past 44 years are investigated using three backward trajectory methods.</div><div><em>New hydrological insights for the region:</em> The results show that the annual average water vapor content in the Ili River Valley is on an overall upward trend, with higher levels in the plains than in the mountainous areas, peaking at certain elevations before decreasing, and showing large regional fluctuations. The multi-year average water vapor content is primarily influenced by the transport from westerly winds, with the western boundary serving as the main water vapor input. Furthermore, the net water vapor budget has shown a slight upward trend over the past 44 years. Extreme precipitation mainly occurs in the eastern and southern mountains of the Ili River Valley, where the sources and transport pathways of water vapor exhibit similar patterns. The water vapor mainly originates from Central Asia, the Caspian Sea, the Black Sea and nearby inland areas. Moreover, localized water vapor transport within Xinjiang also has an important influence on extreme precipitation. The findings of this study are crucial for modeling and predicting extreme events and their spatial distribution, which can significantly reduce the risk of natural disasters triggered by extreme precipitation and provide a solid scientific basis for water resource management in the Ili River Valley.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"58 ","pages":"Article 102278"},"PeriodicalIF":4.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating aquifer vulnerability in the Saigon River Basin (Vietnam) using time domain electromagnetic soundings (TDEM)

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-07 DOI: 10.1016/j.ejrh.2025.102306

Thanh Quoc Truong , Marc Descloitres , Tan Phong Ngo , Tu Anh Tran , Sarah Tweed , Anatoly Legchenko , Tin Trung Nguyen , Thanh Long Tran , Xuan Van Tran , Laurent Oxarango

{"title":"Investigating aquifer vulnerability in the Saigon River Basin (Vietnam) using time domain electromagnetic soundings (TDEM)","authors":"Thanh Quoc Truong , Marc Descloitres , Tan Phong Ngo , Tu Anh Tran , Sarah Tweed , Anatoly Legchenko , Tin Trung Nguyen , Thanh Long Tran , Xuan Van Tran , Laurent Oxarango","doi":"10.1016/j.ejrh.2025.102306","DOIUrl":"10.1016/j.ejrh.2025.102306","url":null,"abstract":"<div><h3>Study region</h3><div>The studied region is the Saigon River basin, located along the eastern border of the Mekong Delta in southern Vietnam.</div></div><div><h3>Study focus</h3><div>In this rapidly growing economic region facing with land subsidence, aquifers are a key resource for agricultural and urban uses. This study focuses on the vulnerability of shallower aquifers (0–150 m deep) in elevated zones (+15 m asl), strategically considered as “refuge zones” compared with the inundated lowlands. Clayey aquitard layers were analyzed for their capacity to protect, or not, the aquifer from infiltration of polluted waters. 260 Time Domain Electromagnetic (TDEM) soundings were used to detect clayey layers and create resistivity maps.</div></div><div><h3>New hydrological insights for the region</h3><div>TDEM results revealed an unknown geometry of the aquifer-aquitard down to 150 m depth. On the right bank of the river, there were no superficial clayey layers to protect the aquifer from infiltrating pollutants. In comparison, on the left bank, the flood plain is clay-rich, thus favoring runoff rather than infiltration of polluted waters. Observations of the deeper clayey layers highlighted discontinuities, which follow ancient meanders and floodplain shapes that originated from quaternary transgression sequences. These results provide clues for understanding past regional sedimentation processes, and links with current aquifer vulnerability. Such information is critical for the strategic planning of elevated areas of coastal megacities such as Ho Chi Minh City.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"58 ","pages":"Article 102306"},"PeriodicalIF":4.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flood resource utilization of cascade hydropower stations along the Han River, China, based on a multi-scenario water level drawdown method

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-07 DOI: 10.1016/j.ejrh.2025.102292

Zhiqiang Jing , Yimin Wang , Jianxia Chang , Xuebin Wang , Aijun Guo

{"title":"Flood resource utilization of cascade hydropower stations along the Han River, China, based on a multi-scenario water level drawdown method","authors":"Zhiqiang Jing , Yimin Wang , Jianxia Chang , Xuebin Wang , Aijun Guo","doi":"10.1016/j.ejrh.2025.102292","DOIUrl":"10.1016/j.ejrh.2025.102292","url":null,"abstract":"<div><h3>Study Region</h3><div>Han River, the longest tributary of the Yangtze River, China.</div></div><div><h3>Study Focus</h3><div>In the dual context of global energy shortages and carbon reduction, increasing the share of clean energy in the power supply is imperative. Hydropower, as a crucial component of renewable energy, often sees its significant potential for power generation during flood periods overlooked. This study aims to enhance the joint power generation of cascade hydropower stations under different typical flood scenarios. Firstly, a multi-scenario water level drawdown method is proposed, providing strong technical support for hydropower stations to utilize flood resources and generate more clean power. Then, typical flood scenarios are selected that take into account the relationship between the basin's flood characteristics and the critical flows specified in reservoir flood dispatch regulations. Further, a flood resource utilization scheduling framework is developed to investigate the joint power generation benefit of cascade hydropower stations adopting different credible forecast times under various operational periods.</div></div><div><h3>New Hydrological Insights for the Region</h3><div>The multi-scenario water level drawdown method can timely lower the reservoir level to the flood control level. Longer credible forecast times don’t always result in better performance, and the appropriate credible forecast time should be selected based on different inflow scenarios to maximize power generation. Through the flood resource utilization scheduling framework, the joint power generation benefit of cascade hydropower stations has increased significantly for 7–1–1 (38.96 *10<sup>4</sup>kW·h), 8–3–1 (145.18 *10<sup>4</sup>kW·h) and 12–1–1 types flood (351.38 *10<sup>4</sup>kW·h).</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"58 ","pages":"Article 102292"},"PeriodicalIF":4.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LH-moment-based regional flood frequency analysis framework to determine design floods in Krishna River basin

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-07 DOI: 10.1016/j.ejrh.2025.102282

Amit Kumar Singh, Sagar Rohidas Chavan

{"title":"LH-moment-based regional flood frequency analysis framework to determine design floods in Krishna River basin","authors":"Amit Kumar Singh, Sagar Rohidas Chavan","doi":"10.1016/j.ejrh.2025.102282","DOIUrl":"10.1016/j.ejrh.2025.102282","url":null,"abstract":"<div><h3>Study region</h3><div>Krishna River basin, India</div></div><div><h3>Study focus</h3><div>There have been limited efforts to develop the LH-moment-based Regional Flood Frequency Analysis (RFFA) framework for Indian catchments. In this study, the LH-moment-based RFFA is used to determine flood quantiles at ungauged sites within the Krishna River basin in India, corresponding to various return periods. Three probability distributions, namely the generalized extreme value (GEV), generalized logistic (GLO), and generalized Pareto (GPA) are considered for performing the RFFA.</div></div><div><h3>New hydrological insights for the region</h3><div>This study examines two cases for RFFA, viz., the first involves a single region comprising all 24 gauges within the basin, while the second divides the 24 gauges into three hydrologically similar regions based on the global K-means (GKM) clustering algorithm. The discordancy and heterogeneity measures are considered for the screening of the peak flow data and checking the heterogeneity of the formed regions, respectively. The performance of the LH-moment-based RFFA framework is evaluated through the Leave-One-Out Cross-Validation (LOOCV) experiment. In the case of single region, GEV distribution is found to be the most suitable regional distribution, while in the second case, the GEV{GEV}[GPA] is identified as the best-fitted regional distribution for the region 1{2}[3]. Overall, the study demonstrates the efficacy of the higher-order LH-moment-based RFFA framework over the L-moment.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"58 ","pages":"Article 102282"},"PeriodicalIF":4.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stepwise calibration of a lumped hydrological model for Xun River basin, China, considering the heterogeneity of soil moisture

IF 4.7 2区地球科学

Journal of Hydrology-Regional Studies Pub Date : 2025-03-07 DOI: 10.1016/j.ejrh.2025.102293

Bin Yi , Huiyuan Liu , Lu Chen , Zhiyuan Leng , Binlin Yang , Tao Xie , Siming Li , Weilong Jiang

{"title":"Stepwise calibration of a lumped hydrological model for Xun River basin, China, considering the heterogeneity of soil moisture","authors":"Bin Yi , Huiyuan Liu , Lu Chen , Zhiyuan Leng , Binlin Yang , Tao Xie , Siming Li , Weilong Jiang","doi":"10.1016/j.ejrh.2025.102293","DOIUrl":"10.1016/j.ejrh.2025.102293","url":null,"abstract":"<div><h3>Study region</h3><div>Xun River in the Han River basin of China.</div></div><div><h3>Study focus</h3><div>This study aims to examine the potential of soil moisture products in the temporal calibration of lumped hydrological models, as well as soil moisture data for improving hydrological simulations by considering heterogeneity. The spatial calibration of semi- or fully distributed models has seldom been carried out for conceptual lumped models since it is more common for gridded products to be used.</div></div><div><h3>New hydrological insights</h3><div>The stepwise calibration scheme considering spatial heterogeneity had the highest average soil moisture correlation coefficient (<em>r</em> = 0.54), followed by the simultaneous calibration scheme considering spatial heterogeneity (<em>r</em> = 0.49), and lastly the simultaneous calibration scheme without considering spatial heterogeneity (<em>r</em> = 0.38). Additionally, the stepwise calibration scheme exhibited lower streamflow accuracy compared with that of the simultaneous calibration scheme. This apparent inconsistency arises because the stepwise approach, while achieving the highest average soil moisture correlation coefficient through spatial heterogeneity consideration, demonstrates compromised performance in streamflow simulation due to the neglected scale-dependent factors. These results reveal that the spatial heterogeneity of soil moisture is of great significance to the calibration results, and it is useful to consider it in the lumped hydrological model by using local soil moisture instead of average soil moisture.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"58 ","pages":"Article 102293"},"PeriodicalIF":4.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0