Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, Brazil
Abstract Knowledge of solar radiation is required for many applications. However, this atmospheric variable is not measured with an adequate space resolution. In this sense, to sites where solar radiation data are not directly measure, estimative using Ångström-Prescott equation can be used in order...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Meteorologia
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| Series: | Revista Brasileira de Meteorologia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862017000300409&lng=en&tlng=en |
| _version_ | 1828444743168688128 |
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| author | Felipe J. de Medeiros Claudio M. Santos e Silva Bergson G. Bezerra |
| author_facet | Felipe J. de Medeiros Claudio M. Santos e Silva Bergson G. Bezerra |
| author_sort | Felipe J. de Medeiros |
| collection | DOAJ |
| description | Abstract Knowledge of solar radiation is required for many applications. However, this atmospheric variable is not measured with an adequate space resolution. In this sense, to sites where solar radiation data are not directly measure, estimative using Ångström-Prescott equation can be used in order to provide solar radiation data, with input of sunshine duration. Thus, the objective of present study was to calibrate the Ångström-Prescott equation for different sites in Rio Grande do Norte state, Brazil. The performance of the calibrated Ångström-Prescott equation was evaluated by comparing of daily global solar radiation observed in situ. The MBE (Mean Bias Error) was lower than 1.50 MJ m-2 day-1, the Pearson's correlation coefficient about 0.90 and Willmott's index of agreement higher than 0.90, which are considered satisfactory. |
| first_indexed | 2024-12-10T21:47:56Z |
| format | Article |
| id | doaj.art-dce136aed78f4e8a80a7606abc0087df |
| institution | Directory Open Access Journal |
| issn | 1982-4351 |
| language | English |
| last_indexed | 2024-12-10T21:47:56Z |
| publisher | Sociedade Brasileira de Meteorologia |
| record_format | Article |
| series | Revista Brasileira de Meteorologia |
| spelling | doaj.art-dce136aed78f4e8a80a7606abc0087df2022-12-22T01:32:19ZengSociedade Brasileira de MeteorologiaRevista Brasileira de Meteorologia1982-435132340941610.1590/0102-77863230008S0102-77862017000300409Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, BrazilFelipe J. de MedeirosClaudio M. Santos e SilvaBergson G. BezerraAbstract Knowledge of solar radiation is required for many applications. However, this atmospheric variable is not measured with an adequate space resolution. In this sense, to sites where solar radiation data are not directly measure, estimative using Ångström-Prescott equation can be used in order to provide solar radiation data, with input of sunshine duration. Thus, the objective of present study was to calibrate the Ångström-Prescott equation for different sites in Rio Grande do Norte state, Brazil. The performance of the calibrated Ångström-Prescott equation was evaluated by comparing of daily global solar radiation observed in situ. The MBE (Mean Bias Error) was lower than 1.50 MJ m-2 day-1, the Pearson's correlation coefficient about 0.90 and Willmott's index of agreement higher than 0.90, which are considered satisfactory.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862017000300409&lng=en&tlng=enregião semiáridainsolaçãoequação Ångström-Prescott |
| spellingShingle | Felipe J. de Medeiros Claudio M. Santos e Silva Bergson G. Bezerra Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, Brazil Revista Brasileira de Meteorologia região semiárida insolação equação Ångström-Prescott |
| title | Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, Brazil |
| title_full | Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, Brazil |
| title_fullStr | Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, Brazil |
| title_full_unstemmed | Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, Brazil |
| title_short | Calibration of Ångström-Prescott Equation to Estimate Daily Solar Radiation on Rio Grande do Norte State, Brazil |
| title_sort | calibration of angstrom prescott equation to estimate daily solar radiation on rio grande do norte state brazil |
| topic | região semiárida insolação equação Ångström-Prescott |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-77862017000300409&lng=en&tlng=en |
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