Analysis of reference evapotranspiration of Janaúba, Minas Gerais
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFMG |
Texto Completo: | http://dx.doi.org/10.4067/S0718-34292016005000017 http://hdl.handle.net/1843/48980 |
Resumo: | Knowledge of the reference evapotranspiration (ETo) is essential for the irrigation management of agricultural crops worldwide. The Penman Monteith demand different weather variables, which hinders its application in areas with few weather stations such as the north of Minas Gerais. This work, compare the method of Hargreaves Samani with Penman Monteith and determine the frequency of occurrence of the reference evapotranspiration in the city of Janaúba, MG. To assess the fit of Hargreaves Samani equation with Penman Monteith used the coefficient of determination (r2), the coefficient of correlation (r), the standard error of estimate (SEE), the index agreement (d) and the index performance (c). Kimball's method was used for determining the frequency of occurrence. The results indicate that the Hargreaves Samani method overestimates the values of Penman Monteith at 8%, but in the monthly analysis, it is observed that between the months April to August Penman values were superior to Hargreaves. All statistical criteria used showed Hargreaves Samani fitted equation with a better assessment when compared with the Penman Monteith. The higher frequency of occurrence was between 4.5 and 4.7 mm day-1 (6.62%) and the equation that indicates the probability of being equaled or exceeded evaporation showed an r2 equal to 0.9676. |
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2023-01-19T11:09:14Z2023-01-19T11:09:14Z2016-083445562http://dx.doi.org/10.4067/S0718-342920160050000170718-3429http://hdl.handle.net/1843/48980Knowledge of the reference evapotranspiration (ETo) is essential for the irrigation management of agricultural crops worldwide. The Penman Monteith demand different weather variables, which hinders its application in areas with few weather stations such as the north of Minas Gerais. This work, compare the method of Hargreaves Samani with Penman Monteith and determine the frequency of occurrence of the reference evapotranspiration in the city of Janaúba, MG. To assess the fit of Hargreaves Samani equation with Penman Monteith used the coefficient of determination (r2), the coefficient of correlation (r), the standard error of estimate (SEE), the index agreement (d) and the index performance (c). Kimball's method was used for determining the frequency of occurrence. The results indicate that the Hargreaves Samani method overestimates the values of Penman Monteith at 8%, but in the monthly analysis, it is observed that between the months April to August Penman values were superior to Hargreaves. All statistical criteria used showed Hargreaves Samani fitted equation with a better assessment when compared with the Penman Monteith. The higher frequency of occurrence was between 4.5 and 4.7 mm day-1 (6.62%) and the equation that indicates the probability of being equaled or exceeded evaporation showed an r2 equal to 0.9676.El conocimiento acerca de la evapotranspiración de referencia (ETo) es esencial para el manejo del riego en los cultivos agrícolas en todo el mundo. El método de Penman Monteith utiliza diversas variables meteorológicas, dificultando su utilización en regiones con pocas estaciones meteorológicas, como es el caso del norte de Minas Gerais. El objetivo de este trabajo fue realizar una comparación entre los métodos de Hargreaves Samani y Penman Monteith así como determinar la frecuencia de ocurrencia de la evapotranspiración de referencia en el municipio de Janaúba. Para evaluar el ajuste de la ecuación de Hargreaves Samani con el método de Penman Monteith se utilizó el coeficiente de determinación (r2), desempeño (c), correlación (r), error estándar de estimativa (EPE) y el índice de concordancia (d). Para determinar la frecuencia de ocurrencia se utilizó el método de Kimbal. Los resultados indicaron que el método de Hargreaves Samani sobreestima los valores de Penman Monteith en 8%, por lo que en el análisis mensual se observa que entre los meses de abril y agosto los valores de Penman fueron superiores a los de Hargreaves. En todos los criterios estadísticos utilizados la ecuación ajustada de Hargreaves Samani presentó mejor comportamiento al compararla con el método de Penman Monteith. La mayor frecuencia de ocurrencia estuvo entre 4,5 y 4,7 mm día-1 con 6,62% y la ecuación que indicó la probabilidad de igualar o superar la evapotranspiración presentó un r2 igual a 0,9676.CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorengUniversidade Federal de Minas GeraisUFMGBrasilICA - INSTITUTO DE CIÊNCIAS AGRÁRIASIdesiaEvapotranspiraçãoMeteorologia agrícolaIrrigação agrícolaAnalysis of reference evapotranspiration of Janaúba, Minas GeraisAnálisis de la evapotranspiración de referencia de Janaúba, Minas Geraisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://www.scielo.cl/pdf/idesia/v34n4/aop1716.pdfMatheus Mendes ReisFlávio Gonçalves OliveiraÉrika Manuela Gonçalves LopesFúlvio Rodriguez Simãoinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGORIGINALAnalysis of reference evapotranspiration of Janaúba, MG.pdfAnalysis of reference evapotranspiration of Janaúba, MG.pdfapplication/pdf556854https://repositorio.ufmg.br/bitstream/1843/48980/2/Analysis%20of%20reference%20evapotranspiration%20of%20Jana%c3%baba%2c%20MG.pdfde63bd46830eb49eeaccb050dc394c64MD52LICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/48980/1/License.txtfa505098d172de0bc8864fc1287ffe22MD511843/489802023-01-19 08:09:14.381oai:repositorio.ufmg.br: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Repositório de PublicaçõesPUBhttps://repositorio.ufmg.br/oaiopendoar:2023-01-19T11:09:14Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.pt_BR.fl_str_mv |
Analysis of reference evapotranspiration of Janaúba, Minas Gerais |
dc.title.alternative.pt_BR.fl_str_mv |
Análisis de la evapotranspiración de referencia de Janaúba, Minas Gerais |
title |
Analysis of reference evapotranspiration of Janaúba, Minas Gerais |
spellingShingle |
Analysis of reference evapotranspiration of Janaúba, Minas Gerais Matheus Mendes Reis Evapotranspiração Meteorologia agrícola Irrigação agrícola |
title_short |
Analysis of reference evapotranspiration of Janaúba, Minas Gerais |
title_full |
Analysis of reference evapotranspiration of Janaúba, Minas Gerais |
title_fullStr |
Analysis of reference evapotranspiration of Janaúba, Minas Gerais |
title_full_unstemmed |
Analysis of reference evapotranspiration of Janaúba, Minas Gerais |
title_sort |
Analysis of reference evapotranspiration of Janaúba, Minas Gerais |
author |
Matheus Mendes Reis |
author_facet |
Matheus Mendes Reis Flávio Gonçalves Oliveira Érika Manuela Gonçalves Lopes Fúlvio Rodriguez Simão |
author_role |
author |
author2 |
Flávio Gonçalves Oliveira Érika Manuela Gonçalves Lopes Fúlvio Rodriguez Simão |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Matheus Mendes Reis Flávio Gonçalves Oliveira Érika Manuela Gonçalves Lopes Fúlvio Rodriguez Simão |
dc.subject.other.pt_BR.fl_str_mv |
Evapotranspiração Meteorologia agrícola Irrigação agrícola |
topic |
Evapotranspiração Meteorologia agrícola Irrigação agrícola |
description |
Knowledge of the reference evapotranspiration (ETo) is essential for the irrigation management of agricultural crops worldwide. The Penman Monteith demand different weather variables, which hinders its application in areas with few weather stations such as the north of Minas Gerais. This work, compare the method of Hargreaves Samani with Penman Monteith and determine the frequency of occurrence of the reference evapotranspiration in the city of Janaúba, MG. To assess the fit of Hargreaves Samani equation with Penman Monteith used the coefficient of determination (r2), the coefficient of correlation (r), the standard error of estimate (SEE), the index agreement (d) and the index performance (c). Kimball's method was used for determining the frequency of occurrence. The results indicate that the Hargreaves Samani method overestimates the values of Penman Monteith at 8%, but in the monthly analysis, it is observed that between the months April to August Penman values were superior to Hargreaves. All statistical criteria used showed Hargreaves Samani fitted equation with a better assessment when compared with the Penman Monteith. The higher frequency of occurrence was between 4.5 and 4.7 mm day-1 (6.62%) and the equation that indicates the probability of being equaled or exceeded evaporation showed an r2 equal to 0.9676. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016-08 |
dc.date.accessioned.fl_str_mv |
2023-01-19T11:09:14Z |
dc.date.available.fl_str_mv |
2023-01-19T11:09:14Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1843/48980 |
dc.identifier.doi.pt_BR.fl_str_mv |
http://dx.doi.org/10.4067/S0718-34292016005000017 |
dc.identifier.issn.pt_BR.fl_str_mv |
0718-3429 |
url |
http://dx.doi.org/10.4067/S0718-34292016005000017 http://hdl.handle.net/1843/48980 |
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0718-3429 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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Idesia |
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info:eu-repo/semantics/openAccess |
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openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
dc.publisher.initials.fl_str_mv |
UFMG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
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reponame:Repositório Institucional da UFMG instname:Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
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Universidade Federal de Minas Gerais (UFMG) |
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UFMG |
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UFMG |
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Repositório Institucional da UFMG |
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Repositório Institucional da UFMG |
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