Models to estimate incident solar radiation on Seropédica, Rio de Janeiro
Incident solar radiation (Rs) is usually used as an input variable in growth simulation models and yield of agricultural crops, in the design of alternative energy systems, buildings desing, weather, irrigation projects and food preservation, among others. However, in Brazil, there are few studies...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Federal de Uberlândia
2016-04-01
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| Series: | Bioscience Journal |
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| Online Access: | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/29877 |
| _version_ | 1818445676486328320 |
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| author | Givanildo de Gois Jessica Cristina Santos Souza José Francisco de Oliveira-Júnior Rafael Coll Delgado Gustavo Bastos Lyra Paulo Eduardo Teodoro |
| author_facet | Givanildo de Gois Jessica Cristina Santos Souza José Francisco de Oliveira-Júnior Rafael Coll Delgado Gustavo Bastos Lyra Paulo Eduardo Teodoro |
| author_sort | Givanildo de Gois |
| collection | DOAJ |
| description |
Incident solar radiation (Rs) is usually used as an input variable in growth simulation models and yield of agricultural crops, in the design of alternative energy systems, buildings desing, weather, irrigation projects and food preservation, among others. However, in Brazil, there are few studies that evaluated the performance of different models in estimating Rs. Therefore, the aim of the study is to evaluate the Hargreaves-Samani, Thornton-Running and Weiss models to estimate Rs in the municipality of Seropédica, Rio de Janeiro. We used hourly measurements of solar radiation (Rs, KJ m-2) and maximum (tx,°C) and minimum (tn,°C) air temperature obtained from Ecologia Agrícola station (EA), between January/2008 to December/2013. Normality (Shapiro-Wilks and Jarque-Bera) and homogeneity of variance (Bartlett) tests were applied to the data set. The performance of the models was evaluated based on different statistical parameters (r2 RMSE, d, Ïs and Student's t-test). The results indicated the rejection of the variance normality hypothesis of the standardized residuals by Shapiro-Wilks and Jarque-Bera tests. Bartlett's test indicated the presence of heterogeneity of model estimates. Hargreaves-Samani and Thornton-Running models obtained high values forr2 and low values for d. Hargreaves-Samani (coastal) model excelled in relation to other, being more suitable for estimating the Rs in the municipality of Seropédica, Rio de Janeiro.
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| first_indexed | 2024-12-14T19:35:37Z |
| format | Article |
| id | doaj.art-e4083a1b4b114f498c3d4d7855bfe4f2 |
| institution | Directory Open Access Journal |
| issn | 1981-3163 |
| language | English |
| last_indexed | 2024-12-14T19:35:37Z |
| publishDate | 2016-04-01 |
| publisher | Universidade Federal de Uberlândia |
| record_format | Article |
| series | Bioscience Journal |
| spelling | doaj.art-e4083a1b4b114f498c3d4d7855bfe4f22022-12-21T22:49:54ZengUniversidade Federal de UberlândiaBioscience Journal1981-31632016-04-01322Models to estimate incident solar radiation on Seropédica, Rio de Janeiro Givanildo de Gois0Jessica Cristina Santos Souza1José Francisco de Oliveira-Júnior2Rafael Coll DelgadoGustavo Bastos LyraPaulo Eduardo TeodoroEstudante de Doutorado do Programa de Pós-graduação em Ciências ambientais e Florestais - PPGCAF, Departamento de Ciências Ambientais - DCA, Instituto de Florestas -IF - Universidade Federal Rural do Rio de Janeiro - UFRRJEstudante de Graduação, Instituto de Astronomia, Geofísica e Ciências Atmosféricas - Universidade de São PauloDepartamento de Ciências Ambientais - DCA, Instituto de Florestas -IF - Universidade Federal Rural do Rio de Janeiro - UFRRJ Incident solar radiation (Rs) is usually used as an input variable in growth simulation models and yield of agricultural crops, in the design of alternative energy systems, buildings desing, weather, irrigation projects and food preservation, among others. However, in Brazil, there are few studies that evaluated the performance of different models in estimating Rs. Therefore, the aim of the study is to evaluate the Hargreaves-Samani, Thornton-Running and Weiss models to estimate Rs in the municipality of Seropédica, Rio de Janeiro. We used hourly measurements of solar radiation (Rs, KJ m-2) and maximum (tx,°C) and minimum (tn,°C) air temperature obtained from Ecologia Agrícola station (EA), between January/2008 to December/2013. Normality (Shapiro-Wilks and Jarque-Bera) and homogeneity of variance (Bartlett) tests were applied to the data set. The performance of the models was evaluated based on different statistical parameters (r2 RMSE, d, Ïs and Student's t-test). The results indicated the rejection of the variance normality hypothesis of the standardized residuals by Shapiro-Wilks and Jarque-Bera tests. Bartlett's test indicated the presence of heterogeneity of model estimates. Hargreaves-Samani and Thornton-Running models obtained high values forr2 and low values for d. Hargreaves-Samani (coastal) model excelled in relation to other, being more suitable for estimating the Rs in the municipality of Seropédica, Rio de Janeiro. https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/29877empirical modelsextreme air temperaturebaixada fluminense. |
| spellingShingle | Givanildo de Gois Jessica Cristina Santos Souza José Francisco de Oliveira-Júnior Rafael Coll Delgado Gustavo Bastos Lyra Paulo Eduardo Teodoro Models to estimate incident solar radiation on Seropédica, Rio de Janeiro Bioscience Journal empirical models extreme air temperature baixada fluminense. |
| title | Models to estimate incident solar radiation on Seropédica, Rio de Janeiro |
| title_full | Models to estimate incident solar radiation on Seropédica, Rio de Janeiro |
| title_fullStr | Models to estimate incident solar radiation on Seropédica, Rio de Janeiro |
| title_full_unstemmed | Models to estimate incident solar radiation on Seropédica, Rio de Janeiro |
| title_short | Models to estimate incident solar radiation on Seropédica, Rio de Janeiro |
| title_sort | models to estimate incident solar radiation on seropedica rio de janeiro |
| topic | empirical models extreme air temperature baixada fluminense. |
| url | https://seer-dev.ufu.br/index.php/biosciencejournal/article/view/29877 |
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