Tendência E Variabilidade Anuais Da Temperatura E Da Pluviosidade Em Pirassununga-Sp

Ferrari, Antonio Luiz; Vecchia, Francisco Arthur da Silva; Colabone, Rosângela de Oliveira

doi:10.5380/abclima.v10i1.30585

Cited by 19 publications

(18 citation statements)

References 11 publications

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“…Related to the maximum annual air temperature, Blain (2010) also analyzing different locations in São Paulo state, verified significant positive trend in Piracicaba, Campinas, Pindorama and Ubatuba, contrarily to Cordeirópolis, Mococa, Monte Alegre do Sul and Ribeirão Preto was observed stability or even reduction trend was found. Opposite results to locations in São Paulo state were observed by Ferrari (2012), where significant reduction trend for the mean air temperature was identified to Pirassununga.…”

Section: Trend Analysismentioning

confidence: 51%

Variability and Trend of Air Temperature and Rainfall at Ribeirão do Lobo Hydrographic Basin, Brazil

Neves

Beruski²,

Filho

et al. 2020

Rev. Bras. Geog. Fis.

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Climate changes have been observed all over the world and are pointed out as responsible to impact the natural resources, especially the amount and the quality of the water in a hydrographic basin. Thus, the present research aimed to analyze the variability and trends of air temperature and rainfall data in the Hydrographic Basin of the Ribeirão do Lobo, São Paulo state, Brazil. The weather data from 1988 to 2017 were collected in the Center of Water Resources and Environment Studies of the University of São Paulo (CRHEA), and in five rainfall stations of the National Water Agency of Brazil (ANA) spread all over the basin. To identify climate changes were applied the simple regression, the run test, the Mann-Kendall and modified Mann-Kendall tests. The results showed significant positive trends in air temperature, especially in the annual period and during the third quarter with rising up to 0.068 °C year-1. Significant increases were verified to minimum, maximum and mean air temperature, which suggests possible climate changes during the period in the analysis. To the rainfall data, periods with positive and negative trends were found, although, most of the time the trends were non-significant. However, a significant negative trend of the rainfall was observed in Ribeirão do Feijão station with a reduction of -10.03 mm year-1.

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Section: Trend Analysismentioning

confidence: 51%

Variability and Trend of Air Temperature and Rainfall at Ribeirão do Lobo Hydrographic Basin, Brazil

Neves

Beruski²,

Filho

et al. 2020

Rev. Bras. Geog. Fis.

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“…Em contrapartida, FERRARI et al (2012) afirmam que o aquecimento global promove diretamente a alteração da variabilidade espacial e temporal das chuvas.…”

Section: Introductionunclassified

Análise Da Tendência Temporal Da Precipitação Do Município De Formiga - Mg

Berigo¹,

Thebaldi²

2017

Enci Bio

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RESUMOO conhecimento da tendência temporal da precipitação é de extrema importância, pois possibilita o dimensionamento seguro de sistemas de drenagens, barragens, vertedores, sistemas de irrigação, além de possibilitar o estudo do comportamento hidrológico do local avaliado. Assim, o presente trabalho teve como objetivo analisar, por meio do teste de Mann-Kendall e de regressões lineares simples, a tendência temporal da precipitação máxima diária anual, mensal e total anual do município de Formiga -MG. Para realização do estudo, foram utilizados os dados brutos da série histórica de precipitações do município, no período de 1985 a 2015, obtidos no serviço Hidroweb da Agência Nacional de Águas. Por meio de regressão linear simples verificou-se que não houve tendência nos dados de precipitação em função do tempo, já que foram obtidos, para todas as séries, baixos coeficientes de determinação. O teste de Mann-Kendall mostrou que apenas o mês de abril apresentou discreta tendência na redução da quantidade de precipitação, porém, esta não foi significativa estatisticamente. De acordo com os resultados obtidos por meio da análise das séries de precipitação máxima diária anual, precipitação mensal e total anual, registradas no período analisado, conclui-se que não houve tendência temporal significativa, tanto relativo ao seu aumento, quanto à sua redução. PALAVRAS-CHAVE: Gestão de Recursos Hídricos. Precipitação Máxima Diária Anual. Teste de Mann-Kendall. RAINFALL TEMPORAL TREND ANALYSIS OF FORMIGA CITY -MG ABSTRACTThe knowledge of the temporal tendency of precipitation has extreme importance, because allows the safe design of drainage systems, dams, spillways, irrigation systems, besides allows the study of the hydrological behavior of the evaluated site.

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“…If probability p of a test were lower than level α (i.e., p < α), then the trend is significant; a value of p > α confirms an insignificant trend. In samples that show no trends, the value of Z is close to zero (FERRARI et al, 2012;DELGADO et al, 2012;MANN, 1945;KENDALL, 1975).…”

Section: Vegetation Trendmentioning

confidence: 99%

Determining vegetation dynamics through the enhanced vegetation index and meteorological variables for the ribeirão Cachimbal basin, Rio de Janeiro-Brazil

Santos¹,

Delgado²,

Pereira³

et al. 2018

Biosci. J.

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ABSTRACT:The objective of this study was to analyze a spatiotemporal study of the vegetation dynamics of the hydrographic basin of the Ribeirão Cachimbal in Rio de Janeiro (Brazil), based on Moderate-Resolution Imaging Spectroradiometer imagery acquired by the TERRA satellite. A total of 23 images were used for each year of El Niño (2005 and2015), 250-m-resolution images from collection 006 of the 16-day Enhanced Vegetation Index (MOD13Q1) product were used. Daily rainfall and temperature data were obtained from a conventional meteorological station at Resende (Rio de Janeiro State), which were made available by the National Institute for Meteorology of Brazil. Simple linear regression analysis was performed to evaluate the dependence of the temporal series of vegetation as a function of the daily series of rainfall and temperature in terms of the significance of their correlation coefficients. Multivariate analysis of the main components was also undertaken. The results of the simple linear regression between the vegetation index and meteorological variables (temperature and rainfall) were significant in the respective years (p-value < 5%), except for rainfall in 2015, which presented a value of 0.06 (p-value < 25%). Observing the trend, both years (2005 and 2015 showed an increase in vegetation in the study area (Z = 0.37 and 0.24, respectively). By quantifying the values of the respective vegetation classes, it was possible to verify that a reduction of 40% had occurred in areas with dense vegetation coverage by 2015. The vegetation dynamics of the Ribeirão Cachimbal basin are influenced by rainfall and temperature variables and they have greatest correlation in spring and summer.

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Tendência E Variabilidade Anuais Da Temperatura E Da Pluviosidade Em Pirassununga-Sp

Cited by 19 publications

References 11 publications

Variability and Trend of Air Temperature and Rainfall at Ribeirão do Lobo Hydrographic Basin, Brazil

Variability and Trend of Air Temperature and Rainfall at Ribeirão do Lobo Hydrographic Basin, Brazil

Análise Da Tendência Temporal Da Precipitação Do Município De Formiga - Mg

Determining vegetation dynamics through the enhanced vegetation index and meteorological variables for the ribeirão Cachimbal basin, Rio de Janeiro-Brazil

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