A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors

Mathematical models for the estimation of the angular distribution of diffuse radiance/luminance in the sky describe the anisotropic character of diffuse solar radiation and daylight in the sky vault. In most of these models the radiance/luminance of a sky point is determined by the product of the i...

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Autores: García Ruiz, Ignacio, García Gorostiaga, M. Almudena, Torres Escribano, José Luis
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/47436
Acceso en línea:https://hdl.handle.net/2454/47436
Access Level:acceso abierto
Palabra clave:Angular distribution models
Sky radiance/luminance
GIS
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spelling A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectorsGarcía Ruiz, IgnacioGarcía Gorostiaga, M. AlmudenaTorres Escribano, José LuisAngular distribution modelsSky radiance/luminanceGISMathematical models for the estimation of the angular distribution of diffuse radiance/luminance in the sky describe the anisotropic character of diffuse solar radiation and daylight in the sky vault. In most of these models the radiance/luminance of a sky point is determined by the product of the indicatrix function and the gradation function. When developing and/or calibrating these models, it is typical to consider separately the dispersion effects in the direction of the sun's rays and the gradation from the zenith towards the horizon. To do this, the sky is divided into a number of concentric spherical zones around the sun and a number of concentric spherical zones around the zenith. The intersection between both sets of zones delimits a series of sky elements. Unfortunately, these sky elements do not correspond to the 145 patches of sky vault recommended by the International Commission on Illumination (CIE), which are routinely scanned by the existing commercial sky scanners. The identification of the sky elements, geometrically different from those observed by commercial sky scanners, and the assignation of the radiance/luminance values registered by such sky scanners are not analytically trivial tasks. A GISbased methodology is presented in this work to undertake these goals.This work was performed in the framework of Project IRILURREFLEX (ENE2017-86974-R), financed by the Spanish State Research Agency (Agencia Estatal de Investigación, AEI) and European Regional Development Fund (Fondo Europeo de Desarrollo Regional, FEDER). They also thank the Public University of Navarre for awarding Ignacio García Ruiz a Doctoral Fellowship.ElsevierIngenieríaIngeniaritzaInstitute of Smart Cities - ISC2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2454/47436reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ENE2017-86974-R© 2018 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/474362026-06-17T12:41:47Z
dc.title.none.fl_str_mv A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors
title A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors
spellingShingle A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors
García Ruiz, Ignacio
Angular distribution models
Sky radiance/luminance
GIS
title_short A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors
title_full A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors
title_fullStr A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors
title_full_unstemmed A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors
title_sort A GIS-based methodology for assigning experimental measurements of angular distribution of sky radiance and luminance to selected sky sectors
dc.creator.none.fl_str_mv García Ruiz, Ignacio
García Gorostiaga, M. Almudena
Torres Escribano, José Luis
author García Ruiz, Ignacio
author_facet García Ruiz, Ignacio
García Gorostiaga, M. Almudena
Torres Escribano, José Luis
author_role author
author2 García Gorostiaga, M. Almudena
Torres Escribano, José Luis
author2_role author
author
dc.contributor.none.fl_str_mv Ingeniería
Ingeniaritza
Institute of Smart Cities - ISC
dc.subject.none.fl_str_mv Angular distribution models
Sky radiance/luminance
GIS
topic Angular distribution models
Sky radiance/luminance
GIS
description Mathematical models for the estimation of the angular distribution of diffuse radiance/luminance in the sky describe the anisotropic character of diffuse solar radiation and daylight in the sky vault. In most of these models the radiance/luminance of a sky point is determined by the product of the indicatrix function and the gradation function. When developing and/or calibrating these models, it is typical to consider separately the dispersion effects in the direction of the sun's rays and the gradation from the zenith towards the horizon. To do this, the sky is divided into a number of concentric spherical zones around the sun and a number of concentric spherical zones around the zenith. The intersection between both sets of zones delimits a series of sky elements. Unfortunately, these sky elements do not correspond to the 145 patches of sky vault recommended by the International Commission on Illumination (CIE), which are routinely scanned by the existing commercial sky scanners. The identification of the sky elements, geometrically different from those observed by commercial sky scanners, and the assignation of the radiance/luminance values registered by such sky scanners are not analytically trivial tasks. A GISbased methodology is presented in this work to undertake these goals.
publishDate 2019
dc.date.none.fl_str_mv 2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/47436
url https://hdl.handle.net/2454/47436
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ENE2017-86974-R
dc.rights.none.fl_str_mv © 2018 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © 2018 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
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