Diurnal Evolution and Estimates of Hourly Diffuse Radiation Based on Horizontal Global Radiation, in Cerrado-Amazon Transition, Brazil

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorFederal University of Mato Grosso-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorde Souza, Adilson Pacheco-
Autor(es): dc.creatorZamadei, Tamara-
Autor(es): dc.creatorBorella, Daniela Roberta-
Autor(es): dc.creatorMartim, Charles Campoe-
Autor(es): dc.creatorde Almeida, Frederico Terra-
Autor(es): dc.creatorEscobedo, João Francisco-
Data de aceite: dc.date.accessioned2025-08-21T23:00:07Z-
Data de disponibilização: dc.date.available2025-08-21T23:00:07Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/atmos14081289-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/307626-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/307626-
Descrição: dc.descriptionIn the Cerrado-Amazonian ecotone in the State of Mato Grosso, intensely altered by anthropic action, the knowledge and processes of energy conversion and energy balance are still incipient, making the monitoring and modeling of diffuse radiation essential for several applications. The objective of this study was to evaluate the seasonality of the diurnal evolution and estimate the hourly diffuse radiation ((Formula presented.) and incident radiation in the horizontal plane between June 2011 and October 2016. The instantaneous measurements (5 min) of diffuse radiation underwent geometric, astronomical, and anisotropic corrections, with subsequent hourly integrations. The seasonality of diffuse radiation and its radiometric fractions was evaluated. The estimates were made considering total and seasonal data groupings (water stations in the region) and in different cloudiness classes (atmospheric transmissivity index— (Formula presented.)). The diurnal behavior of diffuse radiation ((Formula presented.)) was similar to that of global radiation and at the top of the atmosphere, with maximum values at solar noon. The correlations between (Formula presented.) and (Formula presented.) showed third-order polynomial behavior, with maximum observed values of (Formula presented.) ranging from 0.8 to 0.9, for (Formula presented.) less than 0.2. Estimation equations based on radiometric fractions underestimated the values of diffuse radiation, with a better performance presented by models adjusted in annual data groupings. Among the parameterized models for estimating diffuse radiation obtained in the literature, those calibrated regionally in this study, together with those developed for tropical regions, presented better statistical performances.-
Descrição: dc.descriptionPostgraduate Program in Environmental Physics Federal University of Mato Grosso, MT-
Descrição: dc.descriptionInstitute of Agrarian and Environmental Sciences Federal University of Mato Grosso, MT-
Descrição: dc.descriptionRural Engineering Department Faculty of Agricultural Sciences Paulista State University, SP-
Descrição: dc.descriptionRural Engineering Department Faculty of Agricultural Sciences Paulista State University, SP-
Idioma: dc.languageen-
Relação: dc.relationAtmosphere-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectatmospheric transmission-
Palavras-chave: dc.subjectclearness index-
Palavras-chave: dc.subjectestimation models-
Palavras-chave: dc.subjectradiometric fractions-
Palavras-chave: dc.subjectsky cover-
Título: dc.titleDiurnal Evolution and Estimates of Hourly Diffuse Radiation Based on Horizontal Global Radiation, in Cerrado-Amazon Transition, Brazil-
Tipo de arquivo: dc.typelivro digital-
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