Clívia Dias Coelho

Filling Data Gaps: Comparing Regression-based Models and Machine Learning Methods for Rainfall Time Series Reconstruction

Anderson de Oliveira Pinheiro, Demétrius David da Silva, Michel Castro Moreira, Clívia Dias Coelho et autres

Abstract Rainfall time series are essential for hydrological and climate studies; however, data scarcity remains a persistent challenge that compromises the reliability of analyses and modeling. This study compares the performance of regression based models and machine learning (ML) methods for gap …

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Identification of homogeneous rainfall regions in the São Francisco River Basin, Brazil, through cluster analysis

Anderson de Oliveira Pinheiro, Demétrius David da Silva, Michel Castro Moreira, Clívia Dias Coelho et autres

Abstract Precipitation is the primary source of water in a river basin and plays a key role in water resource management by affecting water availability. However, large river basins like the São Francisco River Basin in Brazil show significant variability in rainfall …

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Ecohydrological Modelling in the Ondas River, Brazil: Implications for Fisheries Management

Jady da Silva Nepomuceno, Elis Regina Rodrigues de Souza Castro, Clívia Dias Coelho, Michel Castro Moreira et autres

ABSTRACT This paper aimed to perform an ecohydrological analysis of the Ondas river basin, located in the Brazilian Cerrado, using the Physical Habitat Simulation (PHABSIM) model, in order to determine the monthly ecological flows for its lower course. For calibration and simulation …

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Development and evaluation of hydraulic geometry relationships for large Brazilian river basins

Clívia Dias Coelho, Demétrius David da Silva, Michel Castro Moreira, Naziano Filizola

River cross-section characteristics are not available for many regions of the world, and they are generally expressed as hydraulic geometry (HG) relationships. These relationships usually represent average characteristics of a region, which can generate biased estimates in smaller basins. Therefore, to improve …

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Development and Application of an Environmental Vulnerability Index (EVI) for Identifying Priority Restoration Areas in the São Francisco River Basin, Brazil

Clívia Dias Coelho, Demétrius David da Silva, Ricardo Santos Silva Amorim, Bruno Nery Fernandes Vasconcelos et autres

The environmental vulnerability diagnosis of a river basin depends on a holistic analysis of its environmental aspects and degradation factors. Based on this diagnosis, the definition of priority areas where interventions for environmental recovery should be carried out is fundamental, since financial …

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Development of an Environmental Vulnerability Index (EVI) Using Analytical Hierarchy Process and Application to the São Francisco River Basin, Brazil

Clívia Dias Coelho, Demétrius David da Silva, Ricardo Santos Silva Amorim, Bruno Nery Fernandes Vasconcelos et autres

The environmental vulnerability diagnosis of a river basin depends on a holistic analysis of its environmental aspects and degradation factors. Based on this diagnosis, the definition of priority areas where interventions for environmental recovery should be carried out is fundamental, since financial …

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Water Footprint of soybean, cotton, and corn crops in the western region of Bahia State

Marisa Rodrigues Costa, Michel Castro Moreira, Demétrius David da Silva, Kalesson Martins de Alencar et autres

ABSTRACT Water catchment to subsidize agricultural activities is estimated at 70% of world consumption. In the western region of Bahia, the main agricultural center of the state, there is intensive use of water for the production of agricultural commodities. In regions with …

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Modelling surface water dynamics in an Amazonian sub-basin: impacts of hydraulic geometry refinement

Clívia Dias Coelho, Demétrius David da Silva, Michel Castro Moreira, Naziano Filizola et autres

This study describes the impacts of refinement of hydraulic geometry (HG) relationships in the hydrological MGB model applied to an Amazonian sub-basin (Purus River basin). To this end, HG relationships were developed for the entire basin and for hydrologically homogeneous regions, and …

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Adequação do uso da terra na bacia do rio Doce: potencialidades e limitações

Artur Telles Calegário, Clívia Dias Coelho, Felipe Bernardes Silva, Demétrius David da Silva et autres

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Identification of homogeneous regions and generation of hydraulic geometries relationships: impacts on hydrodynamic modeling in large watersheds

Clívia Dias Coelho

A modelagem hidrológica em grande escala é fundamental para a gestão de recursos hídricos, especialmente em países da América do Sul, onde existe baixa densidade de estações fluviométricas. Geralmente, as dimensões transversais dos canais para aplicação na modelagem hidrológica têm sido estimadas …

Estágio no presente: a experiência do re-encontro com o passado e o encontro com o futuro

Clívia Dias Coelho

Development of an annual drought classification system based on drought severity indexes

Rafael Petruceli Coelho Lima, Demétrius David da Silva, Michel Castro Moreira, JÉSSICA B.M.C. PASSOS et autres

In order to characterize the occurrence and intensity of droughts in the Doce River Basin, as well as to develop a system for its classification, four different drought indexes were evaluated: Percent of Normal Precipitation (PNP), Deciles Method (DM), Rainfall Anomaly Index …

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