A5011964792- Climate variability and models
- Geography and Environmental Studies
- Environmental and biological studies
- Hydrology and Drought Analysis
- Meteorological Phenomena and Simulations
- Tropical and Extratropical Cyclones Research
- Flood Risk Assessment and Management
- Hydrology and Watershed Management Studies
- Precipitation Measurement and Analysis
- Solar Radiation and Photovoltaics
- Climate change impacts on agriculture
- Hydrological Forecasting Using AI
- Rural Development and Agriculture
- Water resources management and optimization
- Plant Water Relations and Carbon Dynamics
- Water-Energy-Food Nexus Studies
- Wind Energy Research and Development
- Coastal and Marine Management
- Maritime Transport Emissions and Efficiency
- Atmospheric aerosols and clouds
- Soil Moisture and Remote Sensing
- Wind and Air Flow Studies
- Logistics and Infrastructure Analysis
- Lightning and Electromagnetic Phenomena
Universidade Federal do Rio Grande do Norte
2013-2024
Universidade Tecnológica Federal do Paraná
2020
Departamento de Ciência e Tecnologia
2019
National Institute for Space Research
2008-2010
Abstract A comprehensive dataset of daily rainfall covering the period from 1972 to 2002 was used compute climatology and trend occurrence intensity heavy, weak normal events on Northeast Brazil (NEB). For selection events, we technique quantiles identified using nonparametric Mann–Kendall test. The heavy are modulated by La Niña El Niño occurrences in general they presented negative concerning number episodes positive rainfall.
Abstract. Northeast Brazil (NEB) has an extensive coastal area, often hit by natural disasters that bring many social and economic losses. The objective of this work was to study the synoptic environment associated with a heavy rainfall event (HRE) on coastland NEB. We used daily data for area NEB between states Rio Grande do Norte Bahia, divided into two subregions: north south coastland. This obtained from hydrometeorological network managed Agência Nacional de Águas reanalysis ERAInterim....
Abstract The northeast of Brazil is characterized by a semiarid climate, in which there considerable temporal and spatial variability the distribution rainfall. In this region, occurrence intense rainfall events (IREs) causes severe damage to population, given that rampant urbanization land use processes make cities more susceptible harmful consequences. Thus, objective study estimate period level return IREs capital Brazil. For end, observed data from weather stations National Institute...
Abstract Extreme rainfall and streamflow events are becoming increasingly more relevant to discussions concerning potential climate changes on planet earth. In most cases, impacts related the occurrence of such phenomena can be amplified due lack planning structure. this context, main objective study is estimate period level return intense in homogeneous subregions São Francisco hydrographic region, as well define which these vulnerable recurrence episodes. We used data from 105 rain gauges...
Abstract The objective of this study was to relate the meteorological droughts in present climate (1991–2016) and their projections for near future (2025–2050) under RCP2.6 RCP8.5 with water resources Rio Grande do Norte (RN) state, located Northeast Brazil. For this, we proposed a relationship between categories Standardized Precipitation Evapotranspiration Index (SPEI) variation four reservoirs. SPEI calculated using regional models (RCM) its ensemble (obtained through principal component...
A frequência de eventos extremos precipitação vem crescendo nos últimos anos, com maior intensidade e duração, assim favorecendo desastres naturais como inundações secas severas. Portanto, a expansão conhecimentos acerca da variabilidade temporal espacial é suma importância para as condições climáticas uma determinada região. Esta pesquisa tem objetivo verificar se há possíveis tendências na chuva ocorrida durante o período menos chuvoso sobre região Semiárida do Nordeste Brasil 1961 2011. O...
ABSTRACT The moisture transport over South America ( SA ) was investigated through the vertically integrated flux of three regions: Amazon AMZ ), Northeastern Brazil NEB and La Plata Basin LPB in different climates, past (1961–1990) future (2071–2100), summer DJF winter JJA seasons. For this, we used results simulations four regional climate models RCMs Regional Climate Change Assessment for CLARIS‐LPB project. capacity limitations to simulate seasonal precipitation period is discussed. In...
Abstract The volumes of artificial reservoirs as well the accumulated rainfall over Northeast region Brazil (NEB) are sensible to modes climate variability. Thus, objective this study is identify relationship between spatial patterns variability in Tropical Atlantic and Pacific Oceans, homogeneous subregions affecting recharge water NEB during period from 1986 2018. For end, we used monthly rainfall; volume data for reservoirs; sea surface temperature anomalies Ocean. first step was apply...
Abstract The aim of this work is to evaluate how the Regional Climate Model ( RegCM4 ) able simulate precipitation in Northeast Brazil NEB ). Therefore, high‐resolution (grid spacing 20 km) simulations during autumns 1998 and 1999 were performed. model was capture regional inter‐annual differences . showed improved prediction concerning intensity spatial distribution rainfall, relative Era Interim reanalysis dataset. experiment based on Emanuel MIT parameterization tends overestimate...
Abstract Heavy rainfall events (HREs) in the post‐summer month of March Southeast Brazil cause disasters such as floods, mudslides and landslides, mainly because soil becomes saturated by February. Forty‐five years data show that heavy frequency increases again March. The composite anomaly fields atmospheric circulation during before HREs associated with formation South Atlantic Convergence Zone some special characteristics may be used a guide for early warning. convergence moisture flux...
Para analisar a ocorrência de Jatos Baixos Níveis (JBN) na região metropolitana Porto Alegre, foram utilizados quinze anos dados radiossondagens coletadas nos horários da 00:00 edas 12:00 UTC, no período 1989 2003. identificar as ocorrências dos JBN aplicados os critérios classificação propostos por Bonner (1968) e modificados Whiteman et aI. (1997) Em seguida, selecionou-se um evento (27/01/2002 às 1200 UTC), que foi mais intensos observados verão durante o analisado. este estudo...
Com dados de descargas elétricas atmosféricas detectadas pela rede sensores do SIMEPAR/PR, este trabalho tem como principal objetivo analisar as atividades três sistemas convectivos, relacionando-as com o ciclo vida cada um. Estes ocorreram no sul continente sul-americano, cuja identificação e seleção obedeceram a critérios estabelecidos neste trabalho. Imagens satélite geoestacionário, realçadas infravermelho, foram utilizadas procedimento, para os anos 2002 2003. Um dos (o mais intenso...
Water scarcity in Northeast Brazil has caused latent perturbations hydropower generation, which is undesirable for Energy Planning. Thus, this study aims to identify the influence of climate on generation by Sobradinho Dam Bahia by: (i) assessing streamflow climatology (1964–2017) and rainfall (1964–2015) through time series analysis, hypothesis testing cluster analysis; (ii) (2000–2017) using energy data, principal component analysis dynamic regression models. The results indicated...
Abstract The occurrence of environmental disasters affects different social segments, impacting health, education, housing, economy and the provision basic services. Thus, objective this study was to estimate relationship between extreme climate, sociosanitary demographic conditions in Northeast region Brazil during period from 1993 2013. Initially, we analyzed spatial pattern incidence events and, subsequently, generalized additive models for location, scale shape were used order identify...
As frequências dos Eventos de Precipitação Intensa (EPI) em duas sub-regiões, norte e sul, do Nordeste Brasil (NEB) são investigadas a partir modelo Eta. Observou-se que sub-região possui, média, maior frequência EPI sul possui menor variabilidade. Os anos extremos precipitação (muitos ou poucos) estiveram relacionados El Niño. Não se encontrou estrita relação entre La Niña com maiores EPIs. Na comparação resultados dados observados as simulações Eta, foram mais confiáveis distribuições...
<title>Abstract</title> This study aims to quantify the impact of rainfall patterns influenced by seasonal movement Intertropical Convergence Zone (ITCZ) southward, Frontal Systems (FS), and South Atlantic (SACZ) during El Niño, La Niña, neutral years on water volumes in artificial reservoirs across Northeast Brazil (NEB) from 1998 2018. Data sources include outgoing longwave radiation NOAA, daily Global Precipitation Climatology Project, reservoir volume National Water Agency state...
Investments in renewable energy sources are increasing several countries, especially wind energy, as a response to global climate change caused by the burning of fossil fuels for electricity generation. Thus, it is important evaluate Regional Climate Models that simulate speed and power density promising areas this type generation with least uncertainty recent past, which essential implementation farms. Therefore, research aims calculate from at Northeast Brazil 1986 2005. Initially,...
Objetivando verificar se o modelo regional RegCM3 consegue representar clima da América do Sul (AS), foi realizado as médias mensais precipitação e umidade específica no inverno verão para presente (1991-2008). Em seguida, avaliou-se fluxo de integrado verticalmente diferentes climas, isto é, passado (1961-1990), (1991-2008) futuro (2071-2100), em três áreas AS: Nordeste Brasil (NEB), Amazônia (AMZ) Bacia Prata (LPB). As análises realizadas presente, mostraram que verão, representa padrão...
Este estudo tem o intuito de avaliar um evento extremo ocorrido no estado do Ceará. Grandes transtornos à sociedade foram causados, como deslizamentos terras, inundações, alagamentos, entre outras perdas materiais. O consistiu em dois sistemas atuando simultaneamente, Vórtice Ciclônico Altos Níveis (VCAN) e uma Ondas Leste, sendo que segundo atuou mês atípico, caracterizando ocasião rara. Segundo dados da Fundação Cearense Meteorologia Recursos Hídricos (Funceme), nos dias ocorreu evento, a...
A observação de distribuição espacial e temporal do regime chuvas da região Nordeste Brasil (NEB) torna-se um desafio devido sua grande variabilidade no tempo espaço. No período 25 a 29 maio 2017 foram registrados casos intensas na parte leste NEB, principalmente entre os estados Alagoas Pernambuco. Desta forma, objetivo deste trabalho consistiu em verificar contribuição dos fluxos umidade associada ao evento precipitação severa ocorrido NEB. Especificamente, pretende-se averiguar as...