Evapotranspiração de Referência para Dimensionamento de Sistemas de Irrigação em Petrolina, PE

Silva, A.O.; Correia, J.S.; Bassoi, L. H.; Teixeira, Alessandro

doi:10.12702/ii.inovagri.2014-a280

Cited by 7 publications

(8 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Assis et al (2014) verified that the reference evapotranspiration data from Mossoró-RN can be adjusted to the normal probability distribution. On the other hand, Silva et al (2015) observed that the normal and gamma distributions were able to represent the Petrolina-PE reference evapotranspiration data, for the cumulative periods of 10, 15 and 30 days. Silva et al (2014) verified the presence of theoretical distribution of probability by means of the chi-square and the Kolmogorov-Smirnov test (at 5% of significance) in Crateús, Quixeramobim and Tauá in the state of Ceará.…”

Section: Introductionmentioning

confidence: 90%

“…On the other hand, Silva et al (2015) observed that the normal and gamma distributions were able to represent the Petrolina-PE reference evapotranspiration data, for the cumulative periods of 10, 15 and 30 days. Silva et al (2014) verified the presence of theoretical distribution of probability by means of the chi-square and the Kolmogorov-Smirnov test (at 5% of significance) in Crateús, Quixeramobim and Tauá in the state of Ceará. Then, normal, log-normal and range distributions were adjusted to monthly reference evapotranspiration (Eto) data in all months of the year.…”

Section: Introductionmentioning

confidence: 90%

See 1 more Smart Citation

Stochastic modeling of reference evapotranspiration in arid and semi-arid zones

et al. 2020

View full text Add to dashboard Cite

The objective of this work was to estimate the probabilities of the reference evapotranspiration (mm), as well as its accumulated values during 10 days (decendial), in Mossoró, RN, Brazil. It wass done through the daily records of evapotranspirations obtained at the Meteorological Station of the Federal Rural University of Semi-Arid (UFERSA), in Mossoró, RN, using the Penman-Monteith method. No previous transformation of the data was necessary since the construction of the tables was based on the approximation of the variable to the Normal distribution. The odds were estimated by the Normal distribution for the confidence levels of 1% to 95% in the data period from 1970 to 2007, taking into account the results of the chi-square and Kolmogorov-Smirnov tests at 10% probability. From the adequacy of the process of construction of the tables, it can be conclude and that studied values have important subsidies for planning of agricultural activities in the region, where the maximum benefits of their benefits are taken, avoiding their harmful effects.

show abstract

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 90%

Stochastic modeling of reference evapotranspiration in arid and semi-arid zones

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Para condições climáticas de Mossoró, RN, o modelo de distribuição Log-Normal pode ser usado para estimar a probabilidade de ocorrência de ET o média para períodos mensais, segundo o teste KS (SANTOS et al, 2011;PEIXOTO et al, 2011b). Nas condições climáticas de Petrolina, PE, a distribuição Gama mostrou-se apta estatisticamente para representar os dados de ET o em escala quinzenal mediante a comprovação pelo teste KS a 5% (SILVA et al, 2014a) e em escala pentadial a 20% de significância (SOUZA et al, 2014).…”

Section: -574punclassified

PROBABILIDADE DE OCORRÊNCIA DE VALORES ESTIMADOS DE EVAPOTRANSPIRAÇÃO DE REFERÊNCIA NO SERTÃO DO CEARÁ - DOI: 10.13083/1414-3984.v22n06a07

Silva¹,

Batista²,

Carmo³

et al. 2014

Reveng

View full text Add to dashboard Cite

Devido à grande variação nos elementos meteorológicos nas diferentes regiões, provocando, com isso, dispersão nas estimativas dos valores de evapotranspiração de referência (ETo), torna-se necessária o estudo de funções de distribuições de probabilidade para um correto dimensionamento dos sistemas de irrigação. Diante do contexto, neste trabalho, objetivou-se avaliar o ajuste dos valores de ET o mensal utilizando o método FAO-Penman-Monteith, às distribuições de probabilidade: Normal, Log-Normal e Gama para os municípios de Crateús, Quixeramobim e Tauá, no estado do Ceará. Para verificar a aderência das distribuições empíricas à distribuição teórica foram utilizados os testes de Kolmogorov-Smirnov (KS) e Qui-quadrado (χ2), em nível de 5% de significância. As distribuições de probabilidade Normal, Log-Normal e Gama mostraram-se adequadas para representar a ET o nos municípios de Crateús, Quixeramobim e Tauá, em todos os meses do ano, segundo o teste KS. Ressalta-se a fácil aplicação da distribuição Normal, bem como a obtenção de seus parâmetros.

show abstract

“…Several works of adjustment of theoretical distributions or probability density involving climate variables, such as evapotranspiration, have been developed emphasizing the benefits of reducing probable climate risks in activity planning (Silva et al, 1998;Saad et al, 2002;Abumanssur, 2006;Blain & Brunini, 2007;Almeida et al, 2009;Cavalcante Junior et al, 2009;Peixoto et al, 2011aPeixoto et al, , 2011bVellame et al, 2012;Assis & Sousa, 2013;Borges Júnior et al, 2013;Silva et al, 2013Silva et al, , 2014Silva et al, , 2015Assis et al, 2014;Santos et al, 2014;Souza et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Goodness-of-Fit of Reference Evapotranspiration to Gamma Probability Distribution

Assis¹,

Lima²,

Linhares³

et al. 2021

JAS

View full text Add to dashboard Cite

This paper aims to estimate, using the Penman-Monteith method, the probabilities of reference evapotranspiration (ET0) in millimeters, as well as their accumulated values for ten days (decendial), in Mossoró, northeast Brazil. The Meteorological Station of the Federal Rural University of Semi-Arid (UFERSA) provided the daily records of evapotranspiration. The construction of tables based on the approximation of the variable to the Gamma distribution allows the use of data without transformations. The probabilities were estimated with the Gamma distribution at confidence levels of 1% to 95% over the 1970-2007 data period. The results of the chi-square and Kolmogorov-Smirnov tests at 10% probability (p ≥ 0.10) demonstrated the adequacy of the table construction process, providing essential support in the planning of agricultural activities in the region to obtain the maximum benefit from evapotranspiration data. The Gamma probability distribution best described the ET0 for scaling irrigation systems in the county. The maximum daily ET0 for irrigation projects in the Mossoró region is 10 mm, and the cumulative 10-day ET0 averages 80 mm.

show abstract

Evapotranspiração de Referência para Dimensionamento de Sistemas de Irrigação em Petrolina, PE

Cited by 7 publications

References 8 publications

Stochastic modeling of reference evapotranspiration in arid and semi-arid zones

Stochastic modeling of reference evapotranspiration in arid and semi-arid zones

PROBABILIDADE DE OCORRÊNCIA DE VALORES ESTIMADOS DE EVAPOTRANSPIRAÇÃO DE REFERÊNCIA NO SERTÃO DO CEARÁ - DOI: 10.13083/1414-3984.v22n06a07

Goodness-of-Fit of Reference Evapotranspiration to Gamma Probability Distribution

Contact Info

Product

Resources

About