Douglas Batista da Silva Ferreira
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View article: Observational Evidence of Intensified Extreme Seasonal Climate Events in a Conurbation Area Within the Eastern Amazon
Observational Evidence of Intensified Extreme Seasonal Climate Events in a Conurbation Area Within the Eastern Amazon Open
This study presents an integrated assessment of four decades (1985–2023) of environmental and climate alterations in the principal metropolitan conurbation of the eastern Brazilian Amazon, encompassing Belém and its adjacent municipalities…
View article: Spatiotemporal Dynamics of Dengue in the State of Pará and the Socio-Environmental Determinants in Eastern Brazilian Amazon
Spatiotemporal Dynamics of Dengue in the State of Pará and the Socio-Environmental Determinants in Eastern Brazilian Amazon Open
Background: The Amazon biome exhibits complex arboviral transmission dynamics influenced by accelerating deforestation, climate change, and socioeconomic inequities. Objectives/Methods: This study integrates official epidemiological record…
View article: Bias correction methods for simulated precipitation in the Brazilian Legal Amazon
Bias correction methods for simulated precipitation in the Brazilian Legal Amazon Open
This study aimed to evaluate precipitation estimates over the Brazilian Legal Amazon (BLA) using high-resolution historical simulations from the MPI-ESM1-2-HR climate model, before and after regionalization with the RegCM4.7.1 model. Conti…
View article: An Octant-Based Multi-Objective Optimization Approach for Lightning Warning in High-Risk Industrial Areas
An Octant-Based Multi-Objective Optimization Approach for Lightning Warning in High-Risk Industrial Areas Open
Lightning strikes are a major hazard in tropical regions, especially in northern Brazil, where open-area industries such as mining are highly exposed. This study proposes an octant-based multi-objective optimization approach for spatial li…
View article: Austral Autumn Precipitation Anomalies Across the Amazon Basin Under the Combined Influences of the Equatorial Pacific and Tropical Atlantic
Austral Autumn Precipitation Anomalies Across the Amazon Basin Under the Combined Influences of the Equatorial Pacific and Tropical Atlantic Open
Under normal conditions, the austral autumn (March–April–May [MAM]) season represents the onset, peak or end of the rainy season, depending on the Amazon sector. In this study, the relative influences of the equatorial Pacific (EqP) and tr…
View article: River Stage Variability and Extremes in the Itacaiúnas Basin in the Eastern Amazon: Machine Learning-Based Modeling
River Stage Variability and Extremes in the Itacaiúnas Basin in the Eastern Amazon: Machine Learning-Based Modeling Open
This study fosters tropical hydroclimatology research by implementing a computational modeling framework based on artificial neural networks and machine learning techniques. We evaluated two models, Multilayer Perceptron (MLP) and Support …
View article: Mapping the Incidence of Dengue Fever in the State of Pará, Eastern Amazon: Epidemiology and Relationships with Climate
Mapping the Incidence of Dengue Fever in the State of Pará, Eastern Amazon: Epidemiology and Relationships with Climate Open
Background: The Amazon region possesses vast natural and anthropogenic ecosystems within a hydroclimatic environment conducive to the proliferation of arboviruses associated with infectious diseases in the human population, notably dengue …
View article: Multidecadal analysis of erosion susceptibility in a watershed heavily impacted by deforestation in southeastern Amazonia
Multidecadal analysis of erosion susceptibility in a watershed heavily impacted by deforestation in southeastern Amazonia Open
Over the last several decades, extensive changes in land use and land cover (LULC) have caused substantial environmental impacts in the watersheds of southeastern Amazonia, such as the Verde River Watershed (VRW). The effects of anthropoge…
View article: Intensification of Natural Disasters in the State of Pará and the Triggering Mechanisms Across the Eastern Amazon
Intensification of Natural Disasters in the State of Pará and the Triggering Mechanisms Across the Eastern Amazon Open
Based on statistical analyses applied to official data from the Digital Atlas of Disasters in Brazil over the last 25 years, we evidenced a consistent intensification in the annual occurrence of natural disasters in the state of Pará, loca…
View article: Evaluating Past Horizons for U-Net-Based Precipitation Nowcasting with Radar Data in Southeastern Pará, Brazil
Evaluating Past Horizons for U-Net-Based Precipitation Nowcasting with Radar Data in Southeastern Pará, Brazil Open
Severe weather events significantly impact daily life, especially during emergencies, affecting human lives and the economy. Decision-making in such events, like heavy rainfall, strong winds, and flash floods, is challenging due to the rap…
View article: Avaliação do Desempenho das Estimativas de Precipitação para o Leste da Amazônia
Avaliação do Desempenho das Estimativas de Precipitação para o Leste da Amazônia Open
O objetivo deste estudo foi avaliar o desempenho de estimadores de precipitação em relação aos dados observados por pluviômetros no leste da Amazônia, abrangendo os estados do Pará, Tocantins e Maranhão no período de janeiro de 2017 a deze…
View article: Small Municipalities in the Amazon under the Risk of Future Climate Change
Small Municipalities in the Amazon under the Risk of Future Climate Change Open
The focus of this work is on small municipalities (population below 50 thousand inhabitants) that cover around 87% of the territory of the Brazilian Legal Amazon (BLA). Based on a comprehensive integrated analysis approach using the three …
View article: Lightning under Different Land Use and Cover, and the Influence of Topography in the Carajás Mineral Province, Eastern Amazon
Lightning under Different Land Use and Cover, and the Influence of Topography in the Carajás Mineral Province, Eastern Amazon Open
Knowledge about regions where lightning occurs is important both for understanding storm development and direction. This can assist in very short-term weather forecasts and in developing lightning warning systems, aiming to minimize exposu…
View article: Intercomparison of Different Sources of Precipitation Data in the Brazilian Legal Amazon
Intercomparison of Different Sources of Precipitation Data in the Brazilian Legal Amazon Open
Monitoring rainfall in the Brazilian Legal Amazon (BLA), which comprises most of the largest tropical rainforest and largest river basin on the planet, is extremely important but challenging. The size of the area and land cover alone impos…
View article: Assessing U-Net Model Performance in Weather Radar-Based Precipitation Nowcasting: A Reflectivity Threshold Analysis
Assessing U-Net Model Performance in Weather Radar-Based Precipitation Nowcasting: A Reflectivity Threshold Analysis Open
Severe weather events pose a global threat, causing property damage and endangering lives. Weather-related disasters account for 50% of all natural and technological disasters. The development of accurate prediction systems are crucial for…
View article: Uso de radar meteorológico para a avaliação das variáveis polarimétricas associadas a descargas atmosféricas no Leste da Amazônia
Uso de radar meteorológico para a avaliação das variáveis polarimétricas associadas a descargas atmosféricas no Leste da Amazônia Open
A compreensão da microfísica de nuvens associada a tempestades severas com grande incidência de descargas atmosféricas pode servir como base científica para o desenvolvimento de sistemas de alerta para a proteção de vidas e equipamentos ex…
View article: Analysis of the wind regime at high spatial-temporal resolution in the itacaiúnas river watershed, eastern amazon
Analysis of the wind regime at high spatial-temporal resolution in the itacaiúnas river watershed, eastern amazon Open
In the present study, hourly wind direction and speed data from six subregions along the Itacaiúnas River watershed (IRW), Eastern Amazon, are analyzed over a 1-year period. The data are acquired from six hydrometeorological stations locat…
View article: Predição de descargas atmosféricas utilizando Machine Learning para prevenção de acidentes
Predição de descargas atmosféricas utilizando Machine Learning para prevenção de acidentes Open
The occurrence of atmospheric discharges poses risks to the the company operations and workers in open-air activities. Due to this, this paper aimed to cluster lightning data, simulating real- time monitoring of storms for three different …
View article: Uso do Campo Elétrico na Geração de Alarmes para Risco de Descargas Atmosféricas
Uso do Campo Elétrico na Geração de Alarmes para Risco de Descargas Atmosféricas Open
Statistics show that Brazil is the country with the highest incidence of atmospheric discharges in the world. Only in 2020 and 2021, there were 280 million lightning strikes in the country. On average, there are 110 deaths and 300 injuries…
View article: Relação Entre o Total de Raios e os Raios Nuvem-Solo Sobre o Leste da Amazônia
Relação Entre o Total de Raios e os Raios Nuvem-Solo Sobre o Leste da Amazônia Open
Neste estudo foi realizada uma análise comparativa da ocorrência de raios do tipo nuvem-solo (NS), medidos por sensores em superfície e o total de raios (NS e intra-nuvem - IN), derivados de sensoriamento remoto por satélite, objetivando e…
View article: AVALIAÇÃO DE SIMULAÇÃO HISTÓRICA DA PRECIPITAÇÃO E TEMPERATURA NA AMAZÔNIA ORIENTAL UTILIZANDO UM MODELO DE ALTA RESOLUÇÃO
AVALIAÇÃO DE SIMULAÇÃO HISTÓRICA DA PRECIPITAÇÃO E TEMPERATURA NA AMAZÔNIA ORIENTAL UTILIZANDO UM MODELO DE ALTA RESOLUÇÃO Open
Este estudo apresenta avaliação do sistema de modelagem climática regional-PRECIS (Providing Regional Climate for Impacts Studies) em simular o clima atual (25 anos, 1981-2005) sobre a Amazônia oriental. As saídas do modelo global HadGEM2-…
View article: Sazonalidade nas notificações de dengue das capitais da Amazônia e os impactos do El Niño/La Niña
Sazonalidade nas notificações de dengue das capitais da Amazônia e os impactos do El Niño/La Niña Open
Resumo: A dinâmica de transmissão da dengue é multifatorial e envolve aspectos socioeconômicos, ecológicos e ambientais, sendo este último intimamente relacionado às condições climáticas locais que interferem no ciclo reprodutivo dos vetor…
View article: CLIMATE INDICATORS FOR A WATERSHED IN THE EASTERN AMAZON
CLIMATE INDICATORS FOR A WATERSHED IN THE EASTERN AMAZON Open
The present study compares the climatological normals for periods of 36 and 34 years (interpolated data) and observed precipitation and air temperature data (2015 and 2016) for four weather stations located within the boundaries of the Ita…
View article: Sensitivity of Numerical Weather Prediction to the Choice of Variable for Atmospheric Moisture Analysis into the Brazilian Global Model Data Assimilation System
Sensitivity of Numerical Weather Prediction to the Choice of Variable for Atmospheric Moisture Analysis into the Brazilian Global Model Data Assimilation System Open
Due to the high spatial and temporal variability of atmospheric water vapor associated with the deficient methodologies used in its quantification and the imperfect physics parameterizations incorporated in the models, there are significan…
View article: Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon
Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon Open
This study estimated the reference evapotranspiration rate (ETo) for the Itacaiúnas River Watershed (IRW), Eastern Amazonia, and measured the accuracy of eight empirical equations: Penman-Monteith (PM), Priestley-Taylor (PT), Hargreaves an…
View article: PADRÕES CLIMATOLÓGICOS E TENDÊNCIAS DA PRECIPITAÇÃO NOS REGIMES CHUVOSO E SECO DA AMAZÔNIA ORIENTAL
PADRÕES CLIMATOLÓGICOS E TENDÊNCIAS DA PRECIPITAÇÃO NOS REGIMES CHUVOSO E SECO DA AMAZÔNIA ORIENTAL Open
Este trabalho apresenta uma contribuição aos aspectos da climatologia dinâmica da Amazônia oriental, baseado na análise observacional das séries históricas de 40 anos (1975 a 2014) dos dados de precipitação para 30 estações meteorológicas …
View article: Estimativa de precipitação e vazões médias para a bacia hidrográfica do rio Itacaiúnas (BHRI), Amazônia Oriental, Brasil (Estimation of Precipitation and average Flows for the Itacaiúnas River Watershed (IRW) - Eastern Amazonia, Brazil)
Estimativa de precipitação e vazões médias para a bacia hidrográfica do rio Itacaiúnas (BHRI), Amazônia Oriental, Brasil (Estimation of Precipitation and average Flows for the Itacaiúnas River Watershed (IRW) - Eastern Amazonia, Brazil) Open
Este artigo discute a relação entre dados observados de precipitação de sete estações meteorológicas e os dados resultantes de interpolação realizadas pelo Climate Prediction Center (CPC) para a área da bacia hidrográfica do rio Itacaiúnas…
View article: Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon
Three decades of reference evapotranspiration estimates for a tropical watershed in the eastern Amazon Open
This study estimated the reference evapotranspiration rate (ETo) for the Itacaiúnas River Watershed (IRW), Eastern Amazonia, and measured the accuracy of eight empirical equations: Penman-Monteith (PM), Priestley-Taylor (PT), Hargreaves an…
View article: SAZONALIDADE DA PRECIPITAÇÃO SOBRE A AMAZÔNIA LEGAL BRASILEIRA: CLIMA ATUAL E PROJEÇÕES FUTURAS USANDO O MODELO REGCM4 (SEASONAL PRECIPITATION OVER THE BRAZILIAN LEGAL AMAZON: CLIMATE CURRENT AND FUTURE PROJECTIONS USING REGCM4 MODEL)
SAZONALIDADE DA PRECIPITAÇÃO SOBRE A AMAZÔNIA LEGAL BRASILEIRA: CLIMA ATUAL E PROJEÇÕES FUTURAS USANDO O MODELO REGCM4 (SEASONAL PRECIPITATION OVER THE BRAZILIAN LEGAL AMAZON: CLIMATE CURRENT AND FUTURE PROJECTIONS USING REGCM4 MODEL) Open
Um downscaling dinâmico usando o modelo regional RegCM4 aninhado ao modelo global HadGEM2 com cenário RCP45 do IPCC-AR4 foi conduzido para a Amazônia, com a finalidade de investigar os aspectos regionais da precipitação sazonal durante o c…
View article: Climatologia Regional de Precipitação Sazonal na Amazônia Oriental (Climatology of Seasonal Rainfall in the Eastern Amazon)
Climatologia Regional de Precipitação Sazonal na Amazônia Oriental (Climatology of Seasonal Rainfall in the Eastern Amazon) Open
Resumo Este artigo compara três bases de dados de precipitação: estimativas de satellite (TRMM-NASA), conjunto de dados de analisados de estações pluviométricas (CPC-NCAR) e dados observacionais de estações convencionais (INMET-MAPA), na A…