Manoel Cardoso

• PhD
• Researcher at National Institute for Space Research

Here we analyze the trends of rainfall and the frequency of rainy days over the Brazilian Cerrado between 1960 and 2021 in four distinct periods according to the seasonal patterns over the region. We also evaluated trends in evapotranspiration, winds, and atmospheric humidity over the Cerrado to elucidate the possible reasons for the detected trend...

Deforestation in the Amazon with its vast consequences for the ecosystem and climate is largely related to subsequent land use for cattle ranching.In addition to conservation policies, proposals to reduce deforestation include measures to intensify cattle ranching. However, the effects of land-use intensification on deforestation are debated in the...

Tropical ecosystems store large amounts of carbon (e.g., tropical forests, peatlands); however, the high rates of ecosystem conversion due to intense land use and land cover changes lead to significant emissions of greenhouse gases (GHGs) to the atmosphere. Additionally, forest degradation, such as unmanaged timber harvest and forest fires, account...

The number of spatiotemporal data sets has increased rapidly in the last years, which demands robust and fast methods to extract information from this kind of data. Here, we propose a network-based model, called Chronnet, for spatiotemporal data analysis. The network construction process consists of dividing a geometric space into grid cells repres...

The number of spatiotemporal data sets has increased rapidly in the last years, which demands robust and fast methods to extract information from this kind of data. Here, we propose a network-based model, called Chronnet, for spatiotemporal data analysis. The network construction process consists of dividing a geometric space into grid cells repres...

Fire activity has a huge impact on human lives. Different models have been proposed to predict fire activity, which can be classified into global and regional ones. Global fire models focus on longer timescale simulations and can be very complex. Regional fire models concentrate on seasonal forecasting but usually require inputs that are not availa...

Network theory has established itself as an appropriate tool for complex systems analysis and pattern recognition. In the context of spatiotemporal data analysis, correlation networks are used in the vast majority of works. However, the Pearson correlation coefficient captures only linear relationships and does not correctly capture recurrent event...

Deforestation in the Amazon with its vast consequences for the ecosystem and climate is largely related to subsequent land use for cattle ranching. In addition to conservation policies, proposals to reduce deforestation include measures to intensify cattle ranching. However, the effects of land-use intensification on deforestation are debated in th...

In this paper, we divide the globe into a hexagonal grid and we extracted time series of daily fire counts from each cell to estimate and analyze worldwide fire season severity (FSS), here defined as the accumulated fire detections in a season. The central question here is evaluating the accuracy of time series forecasting methods to estimate short...

Network theory has established itself as an appropriate tool for complex systems analysis and pattern recognition. In the context of spatiotemporal data analysis, correlation networks are used in the vast majority of works. However, the Pearson correlation coefficient captures only linear relationships and does not correctly capture recurrent event...

Changes in land-use systems in tropical regions, including deforestation, are a key challenge for global sustainability because of their huge impacts on green-house gas emissions, local climate and biodiversity. However, the dynamics of land-use and land-cover change in regions of frontier expansion such as the Brazilian Amazon are not yet well und...

Changes in land-use systems in tropical regions, including deforestation, are a key challenge for global sustainability because of their huge impacts on green-house gas emissions, local climate and biodiversity. However, the dynamics of land-use and land-cover change in regions of frontier expansion such as the Brazilian Amazon is not yet well unde...

Significance The Amazonian tropical forests have been disappearing at a fast rate in the last 50 y due to deforestation to open areas for agriculture, posing high risks of irreversible changes to biodiversity and ecosystems. Climate change poses additional risks to the stability of the forests. Studies suggest “tipping points” not to be transgresse...

The Colônia Deep Drilling Project held its first International Continental Scientific Drilling Program (ICDP) workshop in September 2014 at the University of São Paulo (Brazil). Twenty-seven experts from six countries discussed the feasibility and the expectations of a deep drilling in the structure of Colônia located at the southwestern margin of...

Understanding to what extent different land uses influence fire occurrence in the Amazonian forest is particularly relevant for its conservation. We evaluate the relationship between forest fires and different anthropogenic activities linked to a variety of land uses in the Brazilian states of Mato Grosso, Pará and Rondônia. We combine the new high...

Tendo em vista as dimensões continentais do Brasil assim como a diversidade de seus regimes cli-máticos e das influências sobre seu clima, é necessário ressaltar a necessidade de estudos observacionais para bem conhecê-lo, em termos de características, mecanismos e variabilidade. O conhecimento do clima presente é o primeiro passo para se conhecer...

While deforestation represents an obvious ecosystem change, forest degradation is often more difficult to discern or quantify, but it impacts a number of ecosystem functions which are vital for biodiversity and climate feedbacks. In the Brazilian Amazon, land-use changes increase fire occurrence, especially in fragmented forests close to managed la...

Agriculture, deforestation, greenhouse gas emissions and local/regional climate change have been closely intertwined in Brazil. Recent studies show that this relationship has been changing since the mid 2000s, with the burgeoning intensification and commoditization of Brazilian agriculture. On one hand, this accrues considerable environmental divid...

Extreme weather continues to preoccupy society as a formidable public safety concern bearing huge economic costs. While attention has focused on global climate change and how it could intensify key elements of the water cycle such as precipitation and river discharge, it is the conjunction of geophysical and socioeconomic forces that shapes human s...

Primeiro Relatório de Avaliação do GT1 do PBMC 7BGMKH=NŸ›HEste documento apresenta as principais contribuições do Volume 1 do RAN1, que foi estruturado de acordo com o escopo previamente definido pelos Autores Principais dos capítulos do Grupo de Trabalho 1 (GT1). Os levantamentos aqui sintetizados resultam de uma extensa avaliação da literatura ci...

To the extent that many studies of the last two decades deepen the understanding about the Amazon tropical forest and more is known about the environmental services it offers, they also increased our level of awareness about the growing threats that this system has been subjected to. In addition to the process of uncontrolled expansion of the agric...

Biome models of the global climate-vegetation relationships indicate that most of the Brazilian Amazon has potential for being covered by tropical forests. From current land-use processes observed in the region, however, substantial deforestation and fire activity have been verified in large portions of the region, particularly along the Arc of Def...

Biome models of the global climate-vegetation relationships indicate that most of the Brazilian Amazon has potential for being covered by tropical forests. From current land-use processes observed in the region, however, several areas of natural forests were lead to different states dominated by degraded and secondary forests or even savannas. This...

Most fires in Amazonia result from the combination between climate and land-use factors. They occur mainly in the dry season and are used as an inexpensive tool for land clearing and management. However, their unintended consequences are of important concern. Fire emissions are the most important sources of greenhouse gases and aerosols in the regi...

Fire research is key for understanding the ecosystem functions of Amazonia and the sustainability of land-use practices in the region. Fires are significant disturbances to biogeochemical cycles, and have important links to land use and climate. Major methods for studying fires include fieldwork, remote sensing and modeling. The potential benefits...

In 2005, southwestern Amazonia experienced the effects of an intense drought that affected life and biodiversity. Several major tributaries as well as parts of the main river itself contained only a fraction of their normal volumes of water, and lakes were drying up. The consequences for local people, animals and the forest itself are impossible to...

Aim This study aims to improve the formulation and results of the Brazilian Center for Weather Forecasting and Climate Studies Potential Vegetation Model (CPTEC-PVM) by developing a new parameterization for the long-term occurrence of fire in regions of potential savannas in the tropics. Compared with the relatively slow processes of carbon uptake...

Received 7 May 2007; revised 7 August 2007; accepted 9 August 2007; published 13 September 2007. (1) Field observations and numerical studies revealed that large scale deforestation in Amazonia could alter the regional climate significantly, projecting a warmer and somewhat drier post-deforestation climate. In this study we employed the CPTEC-INPE...

Because their broad spatial and temporal coverage, satellites provide the main source of fire data for Amazonia. A key to the application of these tools for environmental studies is the appropriate interpretation of the data they provide. To enhance the interpretation of satellite fire data for this region, we collected ground-based data on fires i...

Fires are of special interest in environmental studies. Because of their short time scale and strong links to biogeochemical cycles, fires can significantly affect many environmental characteristics, such as carbon stocks and fluxes, air composition, and land productivity. Fires happen both naturally and as a result of anthropogenic activities. In...

The LBA-ECO program is one of several international research components under the Brazilian-led Large Scale Biosphere–Atmosphere Experiment in Amazonia (LBA). The field-oriented research activities of this study are organized along transects and include a set of primary field sites, where the major objective is to study land-use change and ecosyste...

Fires are major disturbances for ecosystems in Amazonia. They affect vegetation succession, alter nutrients and carbon cycling, and modify the composition of the atmosphere. Fires in this region are strongly related to land-use, land-cover and climate conditions. Because these factors are all expected to change in the future, it is reasonable to ex...

Data from satellites are very important for providing information on vegetation fires worldwide. Despite of the broad spatial and temporal coverage, there are several factors that complicate the interpretation of these data. Examples of these factors include fires occurring at times different than the satellite overpasses, the presence of clouds, f...

Fires are major disturbances for ecosystems in Amazonia. They affect vegetation succession, change nutrients and carbon cycling, and modify atmosphere composition. Fires in Amazonia are strongly related to land-use, land-cover and climate conditions. Because these factors are expect to change in the future, models are needed to evaluate the consequ...

Fire activity was qualitatively compared between two meteorological conditions with substantial impacts in Amazonia: the El Niño in 1998 and the drought of 2005. Data used included active-fire detections from TRMM-VIRS during 1998-2005, and maps of the sub-basins for the whole area that correspond to the classification used by the Brazilian water r...

Because of their broad spatial and temporal coverage, satellites are very important for providing information on fire activity in Amazonia. A key to the application of these tools for environmental studies is the accurate interpretation of the data they provide. Examples of factors that should be considered include temporal sampling, cloud coverage...