Results 11 to 20 of about 215 (134)

Observed Hydroclimatic Trends and Their Implications Over Water‐Cycle Dynamics in Montérégie, Southern Quebec, Canada [PDF]

Global Challenges
A comprehensive understanding of groundwater recharge processes is essential for sustainable water resource management under climate change and increasing anthropogenic pressures. This study evaluates hydroclimatic trends (1980–2023) and their impacts on
Jorge Mona, Christin Müller, Janie Masse‐Dufresne, Alexandra Mattei, Florent Barbecot   +4 more
doaj   +3 more sources

Improving Parameter Transferability of GR4J Model under Changing Environments Considering Nonstationarity [PDF]

Water (Switzerland), 2019
Hydrological nonstationarity has brought great challenges to the reliable application of conceptual hydrological models with time-invariant parameters. To cope with this, approaches have been proposed to consider time-varying model parameters, which can evolve in accordance with climate and watershed conditions. However, the temporal transferability of
Dedi Liu, Lihua Xiong, Jong-Suk Kim
exaly   +2 more sources

Component Combination Test to Investigate Improvement of the IHACRES and GR4J Rainfall–Runoff Models [PDF]

Water (Switzerland), 2021
Rainfall–runoff models are not perfect, and the suitability of a model structure depends on catchment characteristics and data. It is important to investigate the pros and cons of a rainfall–runoff model to improve both its high- and low-flow simulation.
Mun-Ju Shin, Shin Mun-Ju
exaly   +2 more sources

Surface runoff prediction and comparison using IHACRES and GR4J lumped models in the Mono catchment, West Africa [PDF]

Proceedings of the International Association of Hydrological Sciences, 2021
This study aims to assess simulated surface runoff before and after dam construction in the Mono catchment (West Africa) using two lumped models: GR4J (Rural Engineering with 4 Daily Parameters) and IHACRES (Identification of unit Hydrographs and ...
H. D. Koubodana, H. D. Koubodana, H. D. Koubodana, K. Atchonouglo, J. G. Adounkpe, E. Amoussou, E. Amoussou, D. J. Kodja, D. Koungbanane, K. Y. Afoudji, Y. Lombo, K. E. Kpemoua   +11 more
doaj   +3 more sources

Enhancing hydrological modeling with bias-corrected satellite weather data in data-scarce catchments: a comparative analysis of SWAT and GR4J models

Frontiers in Water
Hydrological models are widely used to assess climate change effect on water resources at the catchment scale. However, data scarcity is one of the main challenges faced by hydrological modelers especially in developing countries.
Youness Hrour, Zahra Thomas, Pauline Rousseau-Gueutin, Yassine Ait-Brahim, Ophélie Fovet   +4 more
doaj   +2 more sources

Benchmarking and Selecting Optimal Hydrological Models for Large‐Sample Applications Considering Complexity and Uncertainty

Water Resources Research
Reliable large‐sample hydrological predictions require systematic benchmarking and careful model selection. However, this process is challenging due to structural uncertainty among models, high computational demand, and the climatic and physiographic ...
Nikunj K. Mangukiya, Gopeshwar Sahu, Sagar Gupta, Ashutosh Sharma   +3 more
doaj   +2 more sources

Improvement of GR4J Model Applying Soil Moisture Accounting Process and Its Application in Korea Basin [PDF]

Korean Society of Hazard Mitigation, 2012
Abstract Soil Moisture Accounting(SMA) process is an important topic in rainfall-runoff analysis because it determines the initial dis-charge in hydrological models. The SMA process is used in continuous NRCS method. However, it can not explain some eventsdue to its assumption of initial rainfall losses.
Do Guen Yoo, Joong Hoon Kim
exaly   +2 more sources

Parameter Optimization of Rainfall-runoff Model GR4J using Particle Swarm Optimization on Planting Calendar

International Journal on Advanced Science, Engineering and Information Technology, 2020
Challenges in food production in the future are certainly more complex in developing countries like Indonesia. The Agricultural Research and Development Agency developed an Integrated Planting Calendar (Katam) information system to decide the water discharge for rice planting time using rainfall-runoff modeling called GR4J (Genie Rural a four ...
Imas Sukaesih Sitanggang, Yazid Aufar
exaly   +3 more sources

A comparative study of conceptual rainfall-runoff models GR4J, AWBM and Sacramento at catchments in the upper Godavari river basin, India

Journal of Earth System Science, 2019
Accurate catchment level water resource assessment is the base for integrated river basin management. Due to the complexity in model structure and requirement of a large amount of input data for semi-distributed/distributed models, the conceptual models are gaining much attention in catchment modelling these days.
T I Eldho, Eldho T I
exaly   +3 more sources

Enhanced Runoff Modeling by Incorporating Information from the GR4J Hydrological Model and Multiple Remotely Sensed Precipitation Datasets

Water (Switzerland)
Reliable runoff modeling is essential for water resource allocation and management. However, a key uncertainty source is that the true precipitation field is difficult to measure, making reliable runoff modeling still challenging. To account for this uncertainty, this study developed a two-step approach combining ensemble average and cumulative ...
Chengxin Feng, Xingbi Lei, Qihua Su
exaly   +2 more sources