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Solar irradiance modelling using an offline coupling procedure for the Weather Research and Forecasting (WRF) model

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dc.contributor.authorPereira, R.M.
dc.contributor.authorSilva Santos, Carlos
dc.contributor.authorRocha, A.
dc.date.accessioned2020-04-28T17:28:25Z
dc.date.embargo2119
dc.date.issued2019
dc.description.abstract.The research proposed herein seeks to improve solar irradiance magnitude and variability results produced by the Weather Research and Forecasting (WRF) model using a novel offline coupling procedure (OCP). The OCP includes simulations in clear sky conditions, where the effects from varying atmospheric composition depend on the broadband clear sky model used, on cloud attenuation and on decomposition techniques to accurately separate the global irradiance into direct and diffuse components. Furthermore, shadowing and slope effects from orographic features and other obstacles are included with much greater detail. Benefits of the offline coupling procedure were quantified by comparison against local solar radiation measurements over a period of one year. A baseline test to explore the different configuration options was implemented. It considers two aerosol databases, three broadband clear sky models, two cloud attenuation corrections based on clear sky index (either global or by components) and four decomposition models. Given the amount of results from baseline tests, the relative root-mean-square error (rRMSE) was used as the criterion to identify the most suitable OCP configuration, which was subsequently used in the performance analysis. The current baseline test comprises seven sites selected from the Baseline Radiation Network (BSRN) in different terrain complexities and atmospheric conditions. Statistical indicators associated with the annual global horizontal irradiance reveal that OCP improved WRF results by 88.4% in terms of the relative mean bias error (rMBE) and by 5.0% in the value of the Nash-Sutcliffe efficiency (NSE). A standard OCP configuration to model global horizontal irradiance only is proposed. The rMBE of annual hourly global horizontal irradiance oscillated between −3.6% and 3.9%, whilst the NSE varied between 0.608 and 0.939. The analogous quantities for diffuse horizontal irradiance were 19.3% rMBE 4.6% and 0.371 NSE 0.717 , while for direct normal irradiance 6.5% rMBE 23.2% and 0.101 NSE 0.656.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.solener.2019.06.020pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/15910
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0038092X19305948#!pt_PT
dc.subjectNumerical weather predictionpt_PT
dc.subjectBroadband clear sky modelpt_PT
dc.subjectCloud attenuationpt_PT
dc.subjectDecomposition modelpt_PT
dc.subjectShadowingpt_PT
dc.subjectAerosolspt_PT
dc.titleSolar irradiance modelling using an offline coupling procedure for the Weather Research and Forecasting (WRF) modelpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage352pt_PT
oaire.citation.startPage339pt_PT
oaire.citation.titleSolar Energypt_PT
oaire.citation.volume188pt_PT
person.familyNameSilva Santos
person.givenNameCarlos
person.identifier.ciencia-idBD18-9363-BB16
person.identifier.orcid0000-0001-5983-522X
person.identifier.scopus-author-id36938377000
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication3523c766-cf7e-44ac-b93e-e01657d6b8df
relation.isAuthorOfPublication.latestForDiscovery3523c766-cf7e-44ac-b93e-e01657d6b8df

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