Now showing items 1-17 of 17

    • Advances and challenges in the water sciences in Brazil : a community synthesis of the XXIII Brazilian Water Resources Symposium 

      Fan, Fernando Mainardi; Paiva, Rodrigo Cauduro Dias de; Chaffe, Pedro Luiz Borges; Anache, Jamil Alexandre Ayach; Fontes, Andrea Sousa; Araujo, Ligia Maria Nascimento de; Bleninger, Tobias Bernward; Araujo, Anderson Nascimento de; Bartiko, Daniel; Buarque, Diogo Costa; Collischonn, Walter; Amorim, Pablo Borges de; Carlotto, Tomas; Detzel, Daniel Henrique Marco; Formiga-Johnsson, Rosa Maria; Kobiyama, Masato; Männich, Michael; Marques, Guilherme Fernandes; Michel, Gean Paulo; Oliveira, Debora Yumi de; Oliveira, Paulo Tarso Sanches de; Pinheiro, Adilson; Ruhoff, Anderson Luis; Siqueira, Vinícius Alencar; Tassi, Rutinéia; Zanandrea, Franciele (2020) [Journal article]
      In this paper we synthesize the special sessions of the XXIII Brazilian Water Resources Symposium 2019 in order to understand the major advances and challenges in the water sciences in Brazil. We analyzed more than 250 ...
    • Automatic calibration of a large-scale sediment model using suspended sediment concentration, water quality, and remote sensing data 

      Fagundes, Hugo de Oliveira; Paiva, Rodrigo Cauduro Dias de; Fan, Fernando Mainardi (2019) [Journal article]
      Calibration and validation are two important steps in the application of sediment models requiring observed data. This study aims to investigate the potential use of suspended sediment concentration (SSC), water quality ...
    • Avaliação de um método de propagação de cheias em rios com aproximação inercial das equações de Saint-Venant 

      Fan, Fernando Mainardi; Pontes, Paulo Rógenes Monteiro; Paiva, Rodrigo Cauduro Dias de; Collischonn, Walter (2014) [Journal article]
      Os cálculos de propagação de ondas de cheias em rios são, normalmente, realizados utilizando soluções numéricas das equações de Saint-Venant. No entanto, em modelos hidrológicos de transformação chuva-vazão que representam ...
    • CAMELS-BR : hydrometeorological time series and landscape attributes for 897 catchments in Brazil 

      Chagas, Vinícius Bogo Portal; Chaffe, Pedro Luiz Borges; Addor, Nans; Fan, Fernando Mainardi; Fleischmann, Ayan Santos; Paiva, Rodrigo Cauduro Dias de; Siqueira, Vinícius Alencar (2020) [Journal article]
      We introduce a new catchment dataset for large-sample hydrological studies in Brazil. This dataset encompasses daily time series of observed streamflow from 3679 gauges, as well as meteorological forcing (precipitation, ...
    • Comparison of numerical schemes of river flood routing with an inertial approximation of the Saint Venant equations 

      Fassoni-Andrade, Alice César; Fan, Fernando Mainardi; Collischonn, Walter; Fassoni, Artur César; Paiva, Rodrigo Cauduro Dias de (2018) [Journal article]
      The one-dimensional flow routing inertial model, formulated as an explicit solution, has advantages over other explicit models used in hydrological models that simplify the Saint-Venant equations. The main advantage is a ...
    • Data assimilation using the ensemble Kalman filter in a distributed hydrological model on the Tocantins river, Brasil 

      Quiroz Jiménez, Karena; Collischonn, Walter; Paiva, Rodrigo Cauduro Dias de (2019) [Journal article]
      Neste trabalho, o método de assimilação de dados por filtro de Kalman por conjunto (EnKF) é aplicado na bacia do rio Tocantins. Esse método atualiza as vazões do rio usando um modelo hidrológico distribuído. O desempenho ...
    • Efficient number of calibrated cross sections bottom levels on a hydrodynamic model using the SCE-UA algorithm : case study : Madeira River 

      Brêda, João Paulo Lyra Fialho; Bravo, Juan Martín; Paiva, Rodrigo Cauduro Dias de (2017) [Journal article]
      Hydrodynamic models are important tools for simulating river water level and flow. A considerable fraction of the hydrodynamic model errors are related to parameters uncertainties. As cross sections bottom levels considerably ...
    • Estimating design hydrographs at the basin scale : from event-based to continuous hydrological simulation 

      Fleischmann, Ayan Santos; Collischonn, Walter; Paiva, Rodrigo Cauduro Dias de (2019) [Journal article]
      Design hydrographs are widely used in practical hydrologic engineering problems. Typical applications adopt event-based (EBM) methods, using rainfall-runoff models to convert design hyetographs into design hydrographs. ...
    • Impact of large reservoirs on simulated discharges of Brazilian rivers 

      Passaia, Otávio Augusto; Siqueira, Vinícius Alencar; Brêda, João Paulo Lyra Fialho; Fleischmann, Ayan Santos; Paiva, Rodrigo Cauduro Dias de (2020) [Journal article]
      Tens of thousands of dams were built around the world to reduce flood risks, produce energy, and maximize benefits of limited freshwater resources. In Brazil, the main and largest reservoirs are related to hydropower plants. ...
    • Modeling coordinated operation of multiple hydropower reservoirs at a continental scale using artificial neural network : the case of Brazilian hydropower system 

      Brêda, João Paulo Lyra Fialho; Paiva, Rodrigo Cauduro Dias de; Pedrollo, Olavo Correa; Passaia, Otávio Augusto; Collischonn, Walter (2021) [Journal article]
      Reservoirs considerably affect river streamflow and need to be accurately represented in environmental impact studies. Modeling reservoir outflow represents a challenge to hydrological studies since reservoir operations ...
    • Modeling the role of reservoirs versus floodplains on large-scale river hydrodynamics 

      Fleischmann, Ayan Santos; Collischonn, Walter; Paiva, Rodrigo Cauduro Dias de; Tucci, Carlos Eduardo Morelli (2019) [Journal article]
      Large-scale hydrologic–hydrodynamic models are powerful tools for integrated water resources evaluation at the basin scale, especially in the context of flood hazard assessment. However, recent model developments have paid ...
    • On the discretization of river networks for large scale hydrologic-hydrodynamic models 

      Fan, Fernando Mainardi; Siqueira, Vinícius Alencar; Brêda, João Paulo Lyra Fialho; Fleischmann, Ayan Santos; Paiva, Rodrigo Cauduro Dias de; Pontes, Paulo Rógenes Monteiro; Colischonn, Walter (2021) [Journal article]
      The discretization of river networks is a critical step for computing flow routing in hydrological models. However, when it comes to more complex hydrologic-hydrodynamic models, adaptations in the spatial representation ...
    • Previsão de cheias por conjunto em curto prazo 

      Meller, Adalberto; Collischonn, Walter; Fan, Fernando Mainardi; Buarque, Diogo Costa; Paiva, Rodrigo Cauduro Dias de; Dias, Pedro Leite da Silva; Moreira, Demerval Soares (2014) [Journal article]
      Nesse trabalho é apresentada uma aplicação da abordagem da previsão de cheias por conjunto em curto prazo a uma bacia de médio porte localizada na região sudeste do Brasil, a bacia do rio Paraopeba. Para geração das previsões ...
    • The potential impact of new Andean dams on Amazon fluvial ecosystems 

      Forsberg, Bruce; Melack, John M.; Dunne, Thomas; Barthem, Ronaldo Borges; Goulding, Michael; Paiva, Rodrigo Cauduro Dias de; Sorribas, Mino Viana; Silva Júnior, Urbano Lopes da; Weisser, Sabine (2017) [Journal article]
      Increased energy demand has led to plans for building many new dams in the western Amazon, mostly in the Andean region. Historical data and mechanistic scenarios are used to examine potential impacts above and below six ...
    • Toward continental hydrologic–hydrodynamic modeling in South America 

      Siqueira, Vinícius Alencar; Paiva, Rodrigo Cauduro Dias de; Fleischmann, Ayan Santos; Fan, Fernando Mainardi; Ruhoff, Anderson Luis; Pontes, Paulo Rógenes Monteiro; Paris, Adrien; Calmant, Stephane; Collischonn, Walter (2018) [Journal article]
      Providing reliable estimates of streamflow and hydrological fluxes is a major challenge for water resources management over national and transnational basins in South America. Global hydrological models and land surface ...
    • Uncertainty assessment in hydrodynamic modeling of floods generated by dam break 

      Tschiedel, Arthur da Fontoura; Paiva, Rodrigo Cauduro Dias de (2018) [Journal article]
      The objective of the present work was to evaluate sources of uncertainty in dam break simulations for areas with contrasting characteristics: one in a narrow valley with high slopes, and another an open valley with low ...
    • Use of large-scale hydrological models to predict dam break-related impacts 

      Tschiedel, Arthur da Fontoura; Fan, Fernando Mainardi; Paiva, Rodrigo Cauduro Dias de (2020) [Journal article]
      In this research study, the MGB-IPH (acronym for Large Scale Model in Portuguese - Modelo de Grandes Bacias) was used to simulate the propagation of a dam breach hydrograph estimated from predictor equations for the Três ...