Modelling frequency distributions of 5 minute-averaged solar radiation indexes using Beta probability functions

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dc.contributor.authorAssuncao, H. F.
dc.contributor.authorEscobedo, J. F.
dc.contributor.authorOliveira, A. P.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Federal de Goiás (UFG)
dc.date.accessioned2014-05-20T15:24:13Z
dc.date.available2014-05-20T15:24:13Z
dc.date.issued2003-09-01
dc.description.abstractFive minute-averaged values of sky clearness, direct and diffuse indices, were used to model the frequency distributions of these variables in terms of optical air mass. From more than four years of solar radiation observations it was found that variations in the frequency distributions of the three indices of optical air mass for Botucatu, Brazil, are similar to those in other places, as published in the literature. The proposed models were obtained by linear combination of normalized Beta probability functions, using the observed distributions derived from three years of data. The versatility of these functions allows modelling of all three irradiance indexes to similar levels of accuracy. A comparison with the observed distributions obtained from one year of observations indicate that the models are able to reproduce the observed frequency distributions of all three indices at the 95% confidence level.en
dc.description.affiliationUniv Estadual Paulista, DRN, Fac Ciências Agron, Sch Agron Sci, BR-18603970 Botucatu, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Astron Geophys & Atmospher Sci, Dept Atmospher Sci, Grp Micrometeorol, São Paulo, Brazil
dc.description.affiliationFed Univ Goias, Dept Geog, Jatai, Go, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, DRN, Fac Ciências Agron, Sch Agron Sci, BR-18603970 Botucatu, SP, Brazil
dc.format.extent213-224
dc.identifierhttp://dx.doi.org/10.1007/s00704-003-0733-9
dc.identifier.citationTheoretical and Applied Climatology. Vienna: Springer-verlag Wien, v. 75, n. 3-4, p. 213-224, 2003.
dc.identifier.doi10.1007/s00704-003-0733-9
dc.identifier.issn0177-798X
dc.identifier.urihttp://hdl.handle.net/11449/34867
dc.identifier.wosWOS:000185964800007
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofTheoretical and Applied Climatology
dc.relation.ispartofjcr2.321
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleModelling frequency distributions of 5 minute-averaged solar radiation indexes using Beta probability functionsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer

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