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Multi-Model Approach for Assessing the Influence of Calibration Criteria on the Water Balance in Ouémé Basin

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Journal of Water Resource and Protection 2024年第3期16卷 207-218页

作者： Aymar Yaovi Bossa Mahutin Aristide Oluwatobi Kpossou Jean Hounkpè Félicien Djigbo Badou National Institute of Water University of Abomey-Calavi Cotonou Benin Ecole d’Horticulture et d’Aménagement Des Espaces Verts Université Nationale d’Agriculture Kétou Benin

hydrological models are very useful tools for evaluating water resources, and the hydroclimatic hazards associated with the water cycle. However, their calibration and validation require the use of performance criteria which choice is not straightforward. This paper aims to evaluate the influence of the performance criteria on water balance components and water extremes using two global rainfall-runoff models (HBV and GR4J) over the Ouémé watershed at the Bonou and Savè outlets. Three (3) Efficacy criteria (Nash, coefficient of determination, and KGE) were considered for calibration and validation. The results show that the Nash criterion provides a good assessment of the simulation of the different parts of the hydrograph. KGE is better for simulating peak flows and water balance elements than other efficiency criteria. This study could serve as a basis for the choice of performance criteria in hydrological modelling.

关键词： hydrological modelling Performance Criteria Water Balance Ouémé Basin

Virtual geographic environments for water pollution control

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International Journal of Digital Earth 2018年第4期11卷 397-407页

作者： Karsten Rink Cui Chen Lars Bilke Zhenliang Liao Karsten Rinke Marieke Frassl Tianxiang Yue Olaf Kolditz Department of Environmental Informatics Helmholtz Centre for Environmental ResearchLeipzigGermany Faculty of Environmental Sciences Technische Universität DresdenDresdenGermany College of Environmental Science and Engineering Tongji UniversityShanghaiPeople’s Republic of China Department of Lake Research Helmholtz Centre for Environmental ResearchMagdeburgGermany Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijingPeople’s Republic of China

Due to extensive water pollution in Chinese rivers and lakes,large efforts have to be made to improve the quality of drinking water and manage the sewage water treatment *** propose a general workflow for integrating a large number of heterogeneous data sets relating to various hydrological compartments into a Virtual Geographic Environment(VGE).This allows both researchers and stakeholders to easily access complex data collections in a unified context,find interrelations or inconsistencies between data sets and evaluate simulation results with respect to other observations or simulations in the same region.A prototype of such a VGE has been set up for the region around Chao Lake,containing more than 20 spatial data sets and collections as well as first simulation *** prototype has been successfully presented to researchers and stakeholders from China and Germany.

关键词： Scientific visualisation virtual reality hydrological modelling opengeosys data explorer VISLAB

GIS based generation of dynamic hydrological and land patch simulation models for rural watershed areas

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Information Processing in Agriculture 2016年第1期3卷 1-16页

作者： M.Varga S.Balogh B.Csukas Kaposvar University Research Group on Process Network Engineering40 Guba S7400 KaposvarHungary

This paper introduces a GIS based methodology to generate dynamic process model for the simulation based analysis of a sensitive rural *** Direct Computer Mapping(DCM)based solution starts from GIS layers and,via the graph interpretation and graphical edition of the process network,the expert interface is able to integrate the field experts’knowledge in the computer aided generation of the simulation *** methodology was applied and tested for the Southern catchment basin of Lake Balaton,*** the simplified hydrological model the GIS description of nine watercourses,121 water sections,57 small lakes and 20 Lake Balaton compartments were mapped through the expert interface to the dynamic databases of the DCM *** hydrological model involved precipitation,evaporation,transpiration,runoff,*** COoRdination of INformation on the Environment(CORINE)land cover based simplified‘‘land patch”model considered the effect of meteorological and hydrological scenarios on freshwater resources in the land patches,rivers and *** first results show that the applied model generation methodology helps to build complex models,which,after validation can support the analysis of various land use,with the consideration of environmental aspects.

关键词： Dynamic simulation Geographic information systems Environmental management hydrological modelling Land use

Calibration and Validation of the SWAT Model on the Watershed of Bafing River, Main Upstream Tributary of Senegal River: Checking for the Influence of the Period of Study

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Open Journal of Modern Hydrology 2020年第4期10卷 81-104页

作者： Moussé Landing Sane Soussou Sambou Issa Leye Didier Maria Ndione Samo Diatta Ibrahima Ndiaye Mamadou Lamine Badji Seïdou Kane Faculty of Sciences and Technology Department of Physics Cheikh Anta Diop University Dakar Senegal UFR Science and Technology Department of Physics University of Assane Seck Ziguinchor

Management of reservoir water resources requires the knowledge of flow inputs in this reservoir. hydrological rainfall-runoff model is used for this purpose. There are several types of hydrological model according the description of the hydrological processes: black-box models, conceptual models, deterministic physical based model. SWAT is a semi-distributed hydrological model designed for water quality and quantity. This versatile tool has been used all around the world to assess and manage water resources. The main objective of the paper is to calibrate and validate the SWAT model on the watershed of Bafing located between 10°30' and 12°30' north latitude and between 12°30' and 9°30' west longitude to assess climate change on this river flows. A DEM with a resolution of 12.5 m × 12.5 m, the daily average flows and the daily observed precipitations on the period 1979-1986 (long period) are used as inputs for the calibration, while precipitations for the period 1988-1994 are used for the validation. The sensitivity analysis was done to detect the most determining coefficients during the calibration step. It shows that 19 parameters are required. Then, the effect of the period on the parameters calibration is checked by considering first the whole period of study and then each year of the period of study. The Nash criterion was used to compare the calculated and the observed hygrog

关键词： SWAT hydrological modelling Senegal River Bafing Makana

hydrological Processes and Climate Change in Hydrographic Regions of Brazil

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Journal of Water Resource and Protection 2016年第12期8卷 1103-1127页

作者： Alfredo Ribeiro Neto Adriano Rolim da Paz José Antonio Marengo Sin Chan Chou Civil and Environmental Engineering Department Federal University of Pernambuco Recife Brazil Civil and Environmental Engineering Department Federal University of Paraíba Joao Pessoa Brazil National Center for Monitoring and Early Warning of Natural Disasters S&#227o José dos Campos Brazil Center for Weather Forecasts and Climate Studies National Institute for Space Research Cachoeira Paulista Brazil

The objective of this work is to assess the impacts of IPCC AR5 climate change scenarios on water resources and hydrological processes across the entire Brazilian territory. hydrological simulations are carried out in total drainage area of about 11,535,645 km2 and average stream flow of about 272,460 m3/s. The study area consists of different climates and land covers such as the Amazon Forest, Northeast Semiarid, Brazilian Savannah, Pantanal wetlands and temperate climate in the South. The atmospheric forcing to drive the large-scale hydrological model MGB-IPH is derived from the downscaling of two global climate models, HadGEM2-ES and MIROC5, by the Eta Regional Climate Model, at 20 km resolution. The Eta model provided the downscaling of the baseline (1961-1990) and three time-slices (2011-2040, 2041-2070 and 2071-2099). These projections adopted two emission scenarios, the RCP 4.5 and RCP 8.5. The change in the average and extremes of precipitation, evapotranspiration, rates of river discharge and soil moisture were assessed. The simulations showed the response of the hydrographic regions due to change of precipitation and potential evapotranspiration in the scenarios. Water availability decreases in almost the entire study area (exception for the South) and the major basins for hydroelectric power generation are affected. The Northwest, Amazon and a small area along the Northeast Atlantic coast exhibited intensification of the extremes discharges, where the anomaly is positive for high-flow (Q10) and negative for low-flow (Q95). The results highlight the most climatic sensitive regions in Brazil in terms of hydrological variables and water resources.

关键词： hydrological modelling IPCC Scenarios Climate Change Impacts

Assessment of Runoff, Sediment Yields and Nutrient Loss Using the Swat Model in Upper Indus Basin of Pakistan

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Journal of Geoscience and Environment Protection 2020年第9期8卷 62-81页

作者： Washakh Rana Muhammad Ali Ningsheng Chen Waque Rana Muhammad Umar Almas Sundas Rahman Mahfuzur Key Laboratory of Mountain Hazards and Surface Process Institute of Mountain Hazards and Environment Chinese Academy of Sci-ences Chengdu China University of Chinese Academy of Sciences Beijing China School of Architecture Neijiang Normal University Neijiang China School of Management Northwestern Polytechnical University Xi’an China Key Laboratory for Space Biosciences & Biotechnology School of Life Sciences Northwestern Polytechnical University Xi’an China Department of Civil Engineering International University of Business Agriculture and Technology Dhaka Bangladesh

The main objective of this study is to understand the runoff, sediment yield and water quality of the Upper Indus River Basin of Pakistan. To achieve this goal, specific objectives have been met which include, setup of a hydrological model using Soil and Water Assessment Tool (SWAT) then calibration and validation of the hydrological model using river discharges and in the end investigating the performance of the hydrological model by SWAT. This research will have great impacts on socio-economic conditions of Pakistan because study of upper Indus River basin is imperative to provide data needed for its management, and to warrant that it is sustainable to support the increasing population and conservational flows. A set of programmable mapping components MapWindow Geographic Information System (GIS) was used which is an open source GIS based mapping application. It is SWAT used spatially distributed information on elevation, land use, slope and soil. The program Sequential Uncertainty Fitting ver.2 (SUFI-2) in a combination of uncertainty analysis and calibration of outputs was used in SWAT-CUP. SWAT model used input data, which have climate information to obtain results. The observed climate data of temperature gauges and rain gauge were used as input in the SWAT model;the calibration results for three discharge stations were produced. The initial P-factor value was satisfactory but more iteration to attempt narrow uncertainty band with improving goal function, resulted in small percentage of observed data within uncertainty band. A warm up period of three years (1979-1982) was used for simulation of SWAT model. The model was calibrated for selected three catchments for the period 1982-2000 and validated for period 2001-2010. Results are quite comparable with the observed flows.

关键词： Sediment Transport Runoff GIS SWAT Model hydrological modelling Nu-trient Loss