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Postos climatológicos da SUDENE no Estado de Pernambuco.
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Faced with the need for conservation of water resources it is necessary to better irrigation management. The objective of this research was to analyse the water requirement in Pernambuco State, Brazil, represented by the evapotranspiration reference (ET0), in diferents regimes annuals of precipitation: rainfall, regular and dry. The ET0 values were...
Contexts in source publication
Context 1
... maiores valores registrados da ET 0 foram observadas nas regiões meridional do Sertão e da Zona da Mata do Estado. Figuras 1, 2, 3 e 4, a fim de visualizar melhor a ofer- ta e a demanda hídrica nas mesorregiões do Estado. Observa-se que Pernambuco apresenta um déficit hídrico em cerca de 70% da área de seu território. ...
Context 2
... et al. (2008), em experimen- to realizado em Vitoria de Santo Antão, obtiveram uma ET 0 de 5 mm dia -1 , usando lisímetros de pesa- gem, sendo próximos ao obtido pelo método de Thorntwaite e Mather (1955) em escala mensal. (Figura 14). A região do Agreste apresentou as menores médias de ET 0 . ...
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Citations
... Além disso, o método é econômico e objetivo (KNIPLING, 1970;WANG et al., 2016). Entre todas as variáveis climáticas necessárias, a temperatura do ar e a umidade relativa são reconhecidas por exercerem influência significativamente alta nas estimativas de ETo em diferentes zonas climáticas (IRMAK et al., 2006;LEMOS FILHO et al., 2010;SILVA et al., 2011). A temperatura do ar pode ser estimada com precisão com o uso da temperatura da superfície (Ts), obtida nas imagens de satélite (ANDERSON et al., 2012;NOURI et al., 2017;PELTA;CHUDNOVSKY, 2017;FILGUEIRAS et al., 2019;WANG et al., 2021). ...
A precisão e simplificação das estimativas da evapotranspiração de referência (ETo) são necessárias para melhorar o uso racional da água no continuum solo-planta-atmosfera. Teve-se por objetivo no presente estudo testar e avaliar metodologias para estimar a evapotranspiração de referência (ETo) espacializada, baseando-se na associação entre imagens de satélite e dados climáticos medidos em estações meteorológicas. Imagens de satélite Landsat 8 e Aqua MODIS da bacia do Rio Tibagi (BHRT), Sul do Brasil, foram usadas para estimar a temperatura da superfície (Ts) e coluna total de vapor de água precipitável (Wp), respectivamente. Ts e Wp foram associados aos valores médios de temperatura do ar (TmEM) e umidade relativa (URmEM), em regressões lineares simples e múltiplas. A calibração das equações permitiu estimar a temperatura média (TeSR) e umidade relativa (UReSR) do ar por sensoriamento remoto. As ETo estimadas com modelos alternativos e dados espacializados (TeSR e UReSR) foram comparadas com ETo padrão calculadas com o método ASCE Penman-Monteith. O modelo linear múltiplo apresentou desempenho satisfatório para estimar TeSR(Wp;Ts) (r = 0,87) e UReSR(Wp;Ts) (r = 0,41). EToMJS(Ra;ψair) (r = 0,67) e EToC (r = 0,63), estimadas com os modelos Moretti-Jerszurki-Silva e Camargo, respectivamente, resultaram em melhor estimativa de ETo com dados remotos.
... abaixo do recomendado pela Organização das Nações Unidas (ONU) de 1.500 m³/hab./ano, tendo o estado de PE acentuado deficit hídrico, que, segundo Silva et al. (2011), apresenta-se em cerca de 70% da área total do estado. Logo, as atividades econômicas em geral e, consequentemente, a geração de emprego e renda para as pessoas são prejudicadas devido às condições climáticas do Semiárido, que afetam, diretamente, a oferta de água para toda a região (Castro, 2011). ...
O objetivo deste artigo é contribuir com a literatura de avaliação de política pública quanto à
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... The state climate varies in temperature and humidity from the coast to countryside in an east-west transect of 300 km (Ferreira and Sial, 1986;Neves, 2003). Similar variations also occur between the base and the summit of massifs called "islands of humidity" surrounded by a region of dry climate (da Silva et al., 2011;Vauchez et al., 1995). The state of Pernambuco also has a representative crystalline base of many crystalline rocks found worldwide (Neves, 2003;Silva et al., 2017, Costa et al., 2018Santos et al., 2018;Silva et al., 2019;Câmara et al., 2021). ...
... The study site is located in the semiarid climate in Brazil and covers an area of 1.037 million km 2 , accounting for 13% of the Brazilian territory (Ab'Saber, 2003). In the state of Pernambuco, NE Brazil, the semiarid climate is characterized by maximum temperatures above 35 • C, precipitation below 600 mm yr − 1 and average potential evapotranspiration higher than 2000 mm yr − 1 (da Silva et al., 2011). Hyperxerophilic (Caatinga) is the predominant biome in the semiarid region of Pernambuco, which consists mainly of euphorbia, bromeliads, and cacti scarcely distributed along the Borborema Geological Province, covering most of the northeastern region of Brazil (Ferreira and Sial, 1986;Neves, 2003). ...
... In sites with higher altitudes of the Borborema Geological Province there are small sectors, such as mountains, where the elevation influence the climate, allowing pluviometric precipitation above 1200 mm yr − 1 and average temperatures below 18 • C in the coldest months (da Silva et al., 2011;Vauchez et al., 1995). These small sectors have altitudes that can exceed 1100 m and are described as "islands of humidity" surrounded by the semiarid region (Bétard, 2012). ...
Saprolites, along with bedrock, are the main parent materials of soils worldwide. In Northeast Brazil, the climate-geomorphology relationship in specific regions, called “humid islands”, affects saprolite weathering. This regional peculiarity generates a climatic gradient that influences the weathering of crystalline rocks and the genesis of soil-saprolite systems representative of other regoliths found on a global scale. In this study, we combined saprolithology and pedology (soil mineralogy and soil geochemistry) to better understand the weathering process of soil-saprolite profiles derived from syenite along the Triunfo Massif – NE Brazil. We collected soil and saprolite samples to determine the primary and secondary mineralogical assemblies and describe possible pathways of alteration for these minerals using X-ray diffractometry, optical microscopy, and scanning electron microscopy coupled with energy dispersive X-ray spectroscopy. We also determined the weathering degrees of soil horizons and saprolite layers based on mineralogical (Xd and Ip) and chemical indexes (chemical index of alteration, chemical index of weathering, and plagioclase index of alteration). The results showed that the climatic gradient influenced the weathering of minerals, such as K-feldspars, plagioclases, biotite, and hornblende and the pathways of alteration of these primary minerals. We also found that the types of secondary minerals formed are rather similar. The wetter climate at the Massif summit resulted in higher weathering index values and favored pathways of alteration associated to the formation of iron oxides and 1:1 secondary phyllosilicates. The drier climate at the Massif base favored other pathways of alteration associated to the formation of 2:1 secondary phyllosilicates. In addition, micromorphological and geochemical evidence demonstrated an inversion in the classical sequence of mineral stability and biotite was more altered than hornblende placed side by side, possibly due to the influence of structural and geochemical factors.
... The state climate varies in temperature and humidity from the coast to countryside in an east-west transect of 300 km (Ferreira and Sial, 1986;Neves, 2003). Similar variations also occur between the base and the summit of massifs called "islands of humidity" surrounded by a region of dry climate (da Silva et al., 2011;Vauchez et al., 1995). The state of Pernambuco also has a representative crystalline base of many crystalline rocks found worldwide (Neves, 2003;Silva et al., 2017, Costa et al., 2018Santos et al., 2018;Silva et al., 2019;Câmara et al., 2021). ...
... The study site is located in the semiarid climate in Brazil and covers an area of 1.037 million km 2 , accounting for 13% of the Brazilian territory (Ab'Saber, 2003). In the state of Pernambuco, NE Brazil, the semiarid climate is characterized by maximum temperatures above 35 • C, precipitation below 600 mm yr − 1 and average potential evapotranspiration higher than 2000 mm yr − 1 (da Silva et al., 2011). Hyperxerophilic (Caatinga) is the predominant biome in the semiarid region of Pernambuco, which consists mainly of euphorbia, bromeliads, and cacti scarcely distributed along the Borborema Geological Province, covering most of the northeastern region of Brazil (Ferreira and Sial, 1986;Neves, 2003). ...
... In sites with higher altitudes of the Borborema Geological Province there are small sectors, such as mountains, where the elevation influence the climate, allowing pluviometric precipitation above 1200 mm yr − 1 and average temperatures below 18 • C in the coldest months (da Silva et al., 2011;Vauchez et al., 1995). These small sectors have altitudes that can exceed 1100 m and are described as "islands of humidity" surrounded by the semiarid region (Bétard, 2012). ...
Saprolite is the weathered rock below the soil and constitutes the least researched region of the regolith. The association between saprolithology and pedology can contribute to a better understanding of the whole regolith. The Triunfo massif in the state of Pernambuco (NE Brazil) is a natural laboratory suitable for the study of regoliths derived from crystalline rocks under a climate gradient, from the semiarid climate at the base to a humid climate at the top, due to an orographic effect of climate. In this work, we integrated pedology with saprolithology for a taxonomic description of three regolith profiles along the climate gradient in Triunfo massif to better understand the regolith properties. We evaluated the climate effect on the physical, chemical, and morphological properties in horizons and layers of regolith profiles (depth: 2.0 m). The results indicated that a) the integration of taxonomic systems and morphological description protocols of the soil and saprolites in field studies is possible and can contribute to studies on the properties of the whole regoliths, b) the most developed soils were described under wetter climates. However, the climatic gradient did not significantly influence the weathering degree of the saprolite layers below these soils, c) the greater depth and the Bt horizon in the soil under humid climate attenuated the weathering intensity in the underlying saprolite, resulting in saprolite layers with weathering degrees similar to those described in the regolith profile under the semi-arid climate, d) the weathering degree did not advance only from top to bottom, it also moved to zones of greater biological activity, resulting in preferential weathering of the saprolite structure in pedoplasmation zones, e) there is a need to correct the values of physical and chemical properties of the saprolite layers determined in fractions < 2 mm to mitigate the dilution effect, which overestimated by 317% the values of chemical and physical properties in the saprolite layers.
... A pesquisa foi realizada na Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada (UFRPE/UAST), Serra Talhada, Pernambuco, Brasil (Altitude: 429 m, latitude: 7º 56' 15" S e longitude: 38º 18' 45" O) (Figura 1). Conforme a classificação de Köppen, o clima é do tipo BSwh', denominado Semiárido, quente e seco, chuvas de verão-outono com pluviosidade média anual de 632,2 mm/ano, temperaturas do ar médias de 26 ºC e umidade relativa do ar média de 60% (SILVA et al., 2011). Para a semeadura dos genótipos de sorgo, IPA 2502 e Ponta Negra foram colocadas três sementes por cova a cerca de 2,0 cm de profundidade. ...
RESUMO A cultura do sorgo tem demonstrado grande potencialidade para ser utilizada na alimentação dos animais, sobretudo nas regiões semiáridas, pois apresenta alto potencial de produção de fitomassa, tolerância à seca, alto valor energético, boa aceitabilidade, boa digestibilidade, grande reserva de água e fácil propagação. Assim, objetivou-se avaliar a resposta de dois genótipos de sorgo forrageiro submetidos a condições de déficit hídrico e adubação com diferentes doses de manipueira. O experimento foi realizado em blocos casualizados, esquema fatorial 2x4, os tratamentos consistiram de duas cultivares de sorgo forrageiro e quatro doses de manipueira (0,0; 12,0; 24,0 e 48 m 3 ha-1), com quatro repetições, totalizando 32 unidades experimentais. As características avaliadas foram diâmetro do colmo, altura de planta, número de folhas vivas, número de folhas mortas, peso da massa verde e peso da massa seca. Observou-se que a dose de 168,34 mL/vaso maximizou a altura da planto do sorgo IPA 2502, enquanto que a dose de 104,76 mL/vaso maximizou a altura da cultivar BRS Ponta Negra, já as doses de 168,06 e 101,71 mL/vaso maximizaram o diâmetros de colmo das cultivares IPA 2502 e BRS Ponta Negra, respectivamente. Não houve influência das diferentes dosagens de manipueria para o número de folhas vivas e mortas, peso da massa verde e peso da massa seca das cultivares IPA 2502 e BRS Ponta Negra. A utilização de manipueira promoveu incrementos na produção de forragem nos dois genótipos de sorgo forrageiro. PALAVRAS-CHAVE: Estresse hídrico, Forragem, Superfície de resposta DEVELOPMENT OF FORAGE SORGUM UNDER CASSAVA WASTEWATER APPLICATION
... Our results indicate that for plants growing in areas with high evapotranspiration rates (>1.400mm/yr) such as seasonally dry tropical vegetation ( Silva et al. 2011), different stomatal regulation behaviors can occur regardless of the phenological strategies, as observed for M. caesalpinifolia, C. leprosum and L. ferrea. The deciduous species, M. caesalpiniifolia is isohydric and its high FWU capacity may increase LLS and allow the recovery of leaf water status after reaching its π TLP , but not of gas exchange. ...
Foliar uptake of dew is likely an important mechanism of water acquisition for plants from tropical dry environments. However, there is still limited experimental evidence describing the anatomical pathways involved in this process and the effects of this water subsidy on the maintenance of gas exchange and leaf lifespan of species from seasonally dry tropical vegetation such as the Brazilian caatinga .
We performed scanning electron, bright‐field and confocal microscopic analyses and used apoplastic tracers to examine the foliar water uptake (FWU) routes in four woody species with different foliar phenology and widely distributed in the caatinga . Leaves of plants subjected to water stress were exposed to dew simulation to evaluate the effects of the FWU on leaf water potentials, gas exchange and leaf lifespan.
All species absorbed water through their leaf cuticles and/or peltate trichomes but FWU capacity differed among species. Leaf wetting by dew increased leaf lifespan duration up to 36 days compared to plants in the drought treatment. A positive effect on leaf gas exchange and new leaf production was only observed in the anisohydric and evergreen species.
We showed that leaf wetting by dew is relevant for the physiology and leaf lifespan of plants from seasonally dry tropical vegetation, especially for evergreen species.
... Considerando sua localização, vegetação e topografia, o estado de Pernambuco tem condições climáticas diversificadas, apresentando dois tipos climáticos, precipitação no outono e inverno em parte do litoral e semiárido quente no sertão, com médias de temperatura acima de 18 • C, (SILVA, 2011). O estado pernambucano é subdividido em cinco mesorregiões: Metropolitana do Recife, Zona da Mata, Agreste, Sertão e São Francisco, (SILVA, 2011). ...
O presente trabalho traz a aplicação de métodos desenvolvidos na Análise Topológica de Dados e propõe uma nova abordagem para classificar séries temporais contendo dados de precipitação. Especificamente aplicamos o método "Sliding Windows Embeddings" e "Maximum Persistence", que combina topologia persistente e mergulhos de janelas móveis para caracterizar e criar um ranking da periodicidade de séries temporais. Comparamos os resultados obtidos com os resultados da aplicação do método Sample Entropy, que mede a taxa de geração de novas informações examinando séries temporais. Quando a entropia é alta dizemos que o fenômeno é de alta complexidade, isto é, trata-se de uma difícil predição. É esperado que em séries com alta entropia tenhamos menor periodicidade e foi exatamente o que encontramos, pudemos caracterizar através do "Score"' quais séries, e portanto regiões do estado de Pernambuco, tem regime de chuva menos periódico, coincidindo com regime de menor complexidade.
... The State has an area of 98,311 km² and, a population of 9,277,727 habitants, and is bounded to the east by the Atlantic Ocean and by its borders with the states of Paraiba (N), Alagoas (SE), Piauí (W), Ceará (NW) and Bahia (S). It is located between parallels 7º 18' 17'' and 9º 28' 43'' S and the meridian 34º 48' 15'' and 41º 21' 22" W (Silva, Moura, França, Lopes, & Silva, 2011). Pernambuco has diversified climatic conditions due to its geographical position, vegetation and topography. ...
Here we report a study of the temporal variation in daily rainfall recorded at meteorological stations in the state of Pernambuco, Brazil using the method of lacunarity to evaluate dry spell distribution. Results indicate coastal region rainfall has lower lacunarity and shows a more homogeneous behaviour with respect to dry spell duration. In the semiarid and dry regions rainfall series demonstrate higher lacunarity, indicating more complex behaviour and greater variation in dry spell duration. We show that clustering based on calculated lacunarity values can be used to identify geographical regions with characteristic temporal variability in rainfall pattern. For Pernambuco, three distinct spatial patterns were identified: one in the Zona de Mata, another in southern Agreste and Sertão Pernambucano, and third in Sertão São Francisco and the northern part of Agreste.
Análise de lacunaridade de dados de precipitação diária em Pernambuco, Brasil
RESUMO. Neste trabalho, estudamos a variabilidade temporal da precipitação diária registrada em estações meteorológicas no estado de Pernambuco, utilizando o método de lacunaridade para avaliar a distribuição de períodos secos. Os resultados mostraram que, na região costeira, as séries de precipitação exibem menor lacunaridade, indicando comportamento mais homogêneo em relação à duração das secas. No semiárido e na região seca, as séries de precipitação demonstraram maior lacunaridade, indicando comportamento mais heterogêneo e larga distribuição da duração de períodos secos. Mostrou-se também que o agrupamento baseado em valores de lacunaridade pode ser utilizado para identificar regiões geográficas com comportamento temporal característico da precipitação. Para Pernambuco, foram obtidos três distintos padrões espaciais: um formado por estações localizadas na Zona de Mata, outro em Agreste e Sertão Pernambucano e o terceiro em Sertão São Francisco e parte norte de Agreste.
... The State has an area of 98,311 km² and, a population of 9,277,727 habitants, and is bounded to the east by the Atlantic Ocean and by its borders with the states of Paraiba (N), Alagoas (SE), Piauí (W), Ceará (NW) and Bahia (S). It is located between parallels 7º 18' 17'' and 9º 28' 43'' S and the meridian 34º 48' 15'' and 41º 21' 22" W (Silva, Moura, França, Lopes, & Silva, 2011). Pernambuco has diversified climatic conditions due to its geographical position, vegetation and topography. ...
Here we report a study of the temporal variation in daily rainfall recorded at meteorological stations in the state of Pernambuco, Brazil using the method of lacunarity to evaluate dry spell distribution. Results indicate coastal region rainfall has lower lacunarity and shows a more homogeneous behaviour with respect to dry spell duration. In the semiarid and dry regions rainfall series demonstrate higher lacunarity, indicating more complex behaviour and greater variation in dry spell duration. We show that clustering based on calculated lacunarity values can be used to identify geographical regions with characteristic temporal variability in rainfall pattern. For Pernambuco, three distinct spatial patterns were identified: one in the Zona de Mata, another in southern Agreste and Sertão Pernambucano, and third in Sertão São Francisco and the northern part of Agreste. © 2019, Eduem - Editora da Universidade Estadual de Maringa. All rights reserved.
... Developing an alternative ETo method that is sensitive to regional climate heterogeneity in the tropics and sub-tropics is the central motivation of this study. Among the most important climatic variables, vapor pressure deficit (VPD) exerts dominant influence on ETo estimations in different climate types[51][52][53]. However, for the coldest and wettest climates of tropical and subtropical regions in many parts of the world[51,[54][55], solar radiation also governs ETo variability. ...
The development of new reference evapotranspiration (ETo) methods hold significant promise for improving our quantitative understanding of climatic impacts on water loss from the land to the atmosphere. To address the challenge of estimating ETo in tropical and subtropical regions where direct measurements are scarce we tested a new method based on geographical patterns of extraterrestrial radiation (Ra) and atmospheric water potential (Ψair). Our approach consisted of generating daily estimates of ETo across several climate zones in Brazil–as a model system–which we compared with standard EToPM (Penman-Monteith) estimates. In contrast with EToPM, the simplified method (EToMJS) relies solely on Ψair calculated from widely available air temperature (oC) and relative humidity (%) data, which combined with Ra data resulted in reliable estimates of equivalent evaporation (Ee) and ETo. We used regression analyses of Ψair vs EToPM and Ee vs EToPM to calibrate the EToMJS(Ψair) and EToMJS estimates from 2004 to 2014 and between seasons and climatic zone. Finally, we evaluated the performance of the new method based on the coefficient of determination (R²) and correlation (R), index of agreement “d”, mean absolute error (MAE) and mean reason (MR). This evaluation confirmed the suitability of the EToMJS method for application in tropical and subtropical regions, where the climatic information needed for the standard EToPM calculation is absent.
