Publications

Detecting and quantifying cyanobacteria algal bloom occurrence plays an important role in preventing public health risks and …
DOI

Inland waters comprise various aquatic systems, including rivers, lakes, lagoons, reservoirs, and others, and satellite data play a …
DOI

In 2023, an intense drought impacted the Amazon basin triggered by climate change and a strong El Niño event, with the Negro River …
PDF DOI

Land use and land cover (LULC) analysis provides valuable information to understand environmental changes and their effects on …
DOI

Inland and coastal environments are complex ecosystems composed of suspended and dissolved materials, affecting light propagation …
DOI

Earth Observation (EO) satellites have produced vast image collections that are freely accessible to society. However, handling these …
PDF DOI

Constructing a robust ocean color (OC) record (e.g., water transparency, phytoplankton absorption) for long-term assessments of coastal …
DOI

Secchi Disk Depth (Zsd) is one of the most fundamental and widely used water-quality indicators quantifiable via optical remote …
DOI

Water fluxes in the Amazon River floodplain affect hydrodynamic and ecological processes from local to global scales, but they remain …
PDF DOI

Hydrological connectivity based on water surface connectivity controls the water exchange between large rivers and their floodplain …
PDF DOI

Urban reservoirs are important for drinking water services and urban living. However, potentially toxic cyanobacteria blooms are …
PDF DOI

Hydrological connectivity based on water surface connectivity controls the water exchange between large rivers and their floodplain …
DOI

Originally developed for terrestrial science and applications, the US Geological Survey Landsat surface reflectance (SR) archive …
PDF DOI

O monitoramento, detecção e quantificação de florações de cianobactérias são importantes para controlar os riscos à saúde pública e …
PDF DOI

The eutrophication of reservoirs significantly impacts human health and environmental security. However, in situ water quality …
PDF DOI

Trophic State Index (TSI) is a widely used metric to assess water quality and identify potential health risks for water resources use. …

This paper aims to apply the digital processing of satellite images to assess the relationship between the expansion of impermeable …

The purpose of this work is to evaluate two methods of atmospheric correction (AC) applied to multispectral images from the Operational …

The purpose of this work is to evaluate two methods of atmospheric correction (AC) applied to multispectral images from the Operational …

The aim of this work is to test the state-of-the-art of water constituent retrieval algorithms for phycocyanin (PC) and chlorophyll-a …
PDF DOI

The development of algorithms for remote sensing of water quality (RSWQ) requires a large amount of in situ data to account for the …
PDF DOI

Os reservatórios urbanos oferecem importantes serviços ecossistêmicos. Contudo, esses sistemas aquáticos têm a qualidade de suas águas …
PDF

Satellite remote sensing data have been used for water quality mapping, but accurate water reflectance retrieval is dependent on …
PDF DOI

The Amazon Basin is the largest on the planet, and its aquatic ecosystems affect and are affected by the Earth’s processes. …
PDF DOI

Satellite remote sensing data are a key source for the systematic monitoring of inland waters. The current availability of medium and …
PDF

Constructing multi-source satellite-derived water quality (WQ) products in inland and nearshore coastal waters from the past, present, …
PDF DOI

Secchi Disk Depth (Zsd) is one of the widely used water quality measurements. Controlled by variations in Optically Active …
PDF DOI

The composition of phytoplankton and the concentration of pigments in their cells make their absorption and specific absorption …
PDF DOI

The Amazon region has suffered considerable deforestation rates related to logging, cattle ranching, and agriculture. Recently, …
PDF DOI

River meander migration is a process that maintains biodiverse riparian ecosystems by producing highly sinuous rivers, and oxbow lakes. …
PDF DOI

As the largest river basin on Earth, the Amazon is of major importance to the world’s climate and water resources. Over the past …
PDF DOI

Due to increasing algae bloom occurrence and water degradation on a global scale, there is a demand for water quality monitoring …
PDF DOI

As part of a collaborative effort among researchers of several institutions and organizations, this project takes advantage of the …
PDF DOI

Atmospheric correction over inland and coastal waters is one of the major remaining challenges in aquatic remote sensing, often …
PDF DOI

Optical Water Type (OWT) is a useful parameter for assessing water quality changes related to different turbidity levels, trophic state …
PDF DOI

Retrieval of aquatic biogeochemical variables, such as the near-surface concentration of chlorophyll-a (Chla) in inland and coastal …
PDF DOI

One of the key issues of monitoring inland water quality is spatial-temporal sampling because water quality can rapidly change due to …
PDF

Given the importance of dissolved organic matter (DOM) in the carbon cycling of aquatic ecosystems, information on its seasonal …
PDF DOI

Reservatórios são ambientes aquáticos construídos pelo homem de grande importância ambiental, positiva e negativamente, pois pela …
PDF

Nanosatellites and CubeSats were first developed for educational purposes. However, their low cost and short development cycle made …
PDF DOI

Os dados de sensoriamento remoto são essenciais para se avaliar processos de natureza dinâmica em sistemas aquáticos continentais, tais …
PDF

The modeling of underwater light field is essential for the understanding of biogeochemical processes, such as photosynthesis, carbon …
PDF DOI

Using remote sensing for monitoring trophic states of inland waters relies on the calibration of chlorophyll-a (chl-a) bio-optical …
PDF DOI

Terrain elevation is essential for land management, navigation, and earth science applications. Remote sensing advancements have led …
PDF DOI

Remote sensing plays an important role in the monitoring of inland waters. Recently, Cubesats have become an alternative data source …
PDF DOI

The diffuse attenuation coefficient of downwelling irradiance (Kd) is an essential parameter for inland waters research by remotely …
PDF DOI

O uso do sensoriamento remoto (SR) para o monitoramento do estado trófico de águas interiores depende da calibração de algoritmos …
PDF

The scarcity of long time-series of water temperature for tropical reservoirs, usually available at a low frequency of measurements, …
PDF DOI

Water transparency is regularly monitored in water reservoirs due to its known relationship with phytoplankton biomass and algal …
PDF

Turbidity has an essential role in aquatic systems, controlling phytoplankton biomass and pelagic fauna distribution. Therefore, the …
PDF

A acurácia da correção atmosférica para o monitoramento de sistemas aquáticos é extremamente importante, por estes ambientes …
PDF

Remote sensing imagery are fundamental to increasing the knowledge about sediment dynamics in the middle-lower Amazon floodplains. …
PDF DOI

Sobradinho reservoir has been suffering a severe water loss caused by multi-year drought in the Northeast Brazil. This reservoir …
PDF DOI

Imagens do sensor Sentinel-2/MSI, lançado em 2015, apresentam características promissoras para o monitoramento da qualidade dágua. …
PDF

A utilização de imagens de sensoriamento remoto é de fundamental importância para aumentar o conhecimento sobre a dinâmica da troca …
PDF

Devido à crise da quantidade e qualidade da água que se observa em várias regiões do mundo, inclusive no Brasil, o monitoramento das …
PDF

O monitoramento sistemático, essencial para a manutenção dos serviços ecossistêmicos, visa auxiliar na gestão, manutenção e …
PDF

Remote sensing (RS) images can improve the knowledge on the exchanges of sediment between the main rivers and floodplains as it …
PDF

Alguns estudos têm mostrado que os modelos empíricos usados para estimar a concentração da chl-a por sensoriamento remoto em sistemas …
PDF

Water quality monitoring is vital to guaranty endless water resources to the human population. In that sense, orbital remote sensing …
PDF

The Amazon floodplain represents one of the most important terrestrial ecosystems being a highly complex and dynamic environment, …
PDF

Image fusion algorithms can be used to increase the spatial resolution of images. Therefore, evaluate the performance of fusion …
PDF

PDF DOI

Inland and coastal waterbodies are critical components of the global biosphere. Timely monitoring is necessary to enhance our …
PDF DOI

O pulso de inundação dos rios da planície Amazônica afeta a proporção de Matéria Orgânica Dissolvida (MOD) autóctone e alóctone …
PDF

Land cover changes (LCC) affect the water balance (WB), changing surface runoff (SurfQ), evapotranspiration (ET), groundwater (GW) …
PDF DOI

Although mining plays an important role for the economy of the Amazon, little is known about its attributes such as area, type, …
PDF DOI

A practical atmospheric correction algorithm, called Coupled Moderate Products for Atmospheric Correction (CMPAC), was developed and …
PDF DOI

O desenvolvimento de algoritmos com boa acurácia e precisão para obtenção de informações ópticas de águas interiores é fundamental …
PDF

Multiangle Implementation of Atmospheric Correction (MAIAC) is a new Moderate Resolution Imaging Spectroradiometer (MODIS) algorithm …
PDF DOI

Land cover change such as replacing the forest with pasture or bare soil areas can significantly affect the water cycle, altering …
PDF DOI

The objective of this study is to evaluate spatial and temporal patterns of the optical properties of four floodplain lakes in …
PDF

Uncertainties in the estimates of water constituents are among the main issues concerning the orbital remote sensing of inland …
PDF DOI

Satellite data provide the only viable means for systematic monitoring of remote and large ecosystem, such as Amazon. However, …
PDF

This paper aims on the investigation of well-established models to retrieve the backscattering slope γbbp from remote sensing images …
PDF

Monitoring cyanobacteria blooms in inland waters is largely restricted to in situ water samples. An alternative for quick access to …
PDF

Artisanal and Small-scale Gold Mining (ASGM) within the Amazon region has created several environmental impacts, such as mercury …
PDF DOI

Satellite images are recognized as a data source for the monitoring of inland waters. Amazon Rivers have a seasonal dynamic …
PDF

Atmospheric correction is a crucial procedure to derive physical parameters from satellite images. Since water reflectance is …
PDF

Satellite data provide the only viable means for extensive monitoring of remote and large freshwater systems, such as the Amazon …
PDF DOI

Remote sensing of inland waters relies on the retrieval of optically active constituent concentration using reflectance as input to …
PDF

The chlorophyll-a specific absorption coefficient (aphy*) is used to describe phytoplankton light absorption capability per unit of …
PDF

PDF

Nowadays, the monitoring of water is essential for the sustainability and better management of water resources. The use of remote …
PDF DOI

PDF

Amazon floodplain lakes play a substantial role in global and regional biogeochemical Amazonian processes. Due to their size, …
PDF

PDF

PDF

PDF

PDF

O textitsunglint, também conhecido como reflexão especular da água, é um componente da radiação que atinge o sensor sem interagir com …
PDF

A base de dados in situ de concentraçãode sedimentos em suspensão (CSS) nos rios amazônicos possui baixa densidade de amostras (2,72 …

O gerenciamento do uso sustentável dos recursos hídricos depende fundamentalmente de informações sobre a qualidade da água e de como …
PDF

Assurance of water quality for human consumption is essential for public health policies. In the Amazon floodplain, the seasonal …
PDF DOI

We applied spatial data analysis and geostatistical procedures to pH, total suspended sediment and chlorophyll-a concentration data …
PDF DOI

To assess seasonal changes in phytoplanktonic chlorophyll distributions in Amazon floodplain lakes, a linear mixing model was applied …
PDF DOI

This paper presents a methodolgy for processing and applying high resolution bathimetric data acquired with a Lowrance -480M …
PDF

O presente trabalho demonstra a aplicabilidade de imagens de sensoriamento remoto e de métodos de processamento de imagens digitais …
PDF DOI

Esta pesquisa teve como hipótese inicial que a variação espaço-temporal de massas de água distintas presentes na planície de …
PDF

This letter results of experiments conducted to assess the use of linear mixing models to unmix the reflectance spectra of water. The …
PDF DOI

The objective of this paper is to exemplify the use of remote sensing to assess methane emissions from reservois. Man-made reservoirs …

The relationship between reflectance and suspended sediment concentration (SSC)is depended upon the wavebands sensed and the viedwing …
PDF DOI

The use of remotely-sensed optical data to estimate the suspended sediments concentration (SSC)of water is dependent upon the …