Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers

Detalhes bibliográficos
Autor(a) principal: Bará, Salvador
Data de Publicação: 2023
Outros Autores: Bao-Varela, Carmen, Lima, Raul Cerveira
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.22/21611
Resumo: Low Earth orbit radiometers allow monitoring nighttime anthropogenic light emissions in wide areas of the planet. In this work we describe a simple model for assessing significant outdoor lighting changes at the municipality level using on-orbit measurements complemented with ground-truth information. We apply it to evaluate the transformation effected in the municipality of Ribeira (42°33'23"N, 8°59' 32" W) in Galicia, which in 2015 reduced the amount of installed lumen in its publicly-owned outdoor lighting system from 93.2 to 28.7 Mlm. This significant cutback, with the help of additional controls, allowed to reduce from 0.768 to 0.208 Mlm/km2 the lumen emission density averaged across the territory. In combination with the VIIRS-DNB annual composite readings these data allow to estimate that the relative weight of the emissions of the public treetlight system with respect to the total emissions of light in the municipality changed from an initial value of 74.86% to 44.68% after the transformation. The effects of the sources’ spectral shift and the photon calibration factor on the radiance reported by the VIIRS-DNB are also evaluated.
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spelling Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometersLight pollutionRadiometryPhotometryVIIRS-DNBOutdoor lightingLow Earth orbit radiometers allow monitoring nighttime anthropogenic light emissions in wide areas of the planet. In this work we describe a simple model for assessing significant outdoor lighting changes at the municipality level using on-orbit measurements complemented with ground-truth information. We apply it to evaluate the transformation effected in the municipality of Ribeira (42°33'23"N, 8°59' 32" W) in Galicia, which in 2015 reduced the amount of installed lumen in its publicly-owned outdoor lighting system from 93.2 to 28.7 Mlm. This significant cutback, with the help of additional controls, allowed to reduce from 0.768 to 0.208 Mlm/km2 the lumen emission density averaged across the territory. In combination with the VIIRS-DNB annual composite readings these data allow to estimate that the relative weight of the emissions of the public treetlight system with respect to the total emissions of light in the municipality changed from an initial value of 74.86% to 44.68% after the transformation. The effects of the sources’ spectral shift and the photon calibration factor on the radiance reported by the VIIRS-DNB are also evaluated.ElsevierRepositório Científico do Instituto Politécnico do PortoBará, SalvadorBao-Varela, CarmenLima, Raul Cerveira2023-012023-01-01T00:00:00Z2024-10-30T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.22/21611engBará, S., Bao-Varela, C., & Lima, R. C. (2023). Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers. Journal of Quantitative Spectroscopy and Radiative Transfer, 295, 108405. https://doi.org/https://doi.org/10.1016/j.jqsrt.2022.1084050022-407310.1016/j.jqsrt.2022.108405metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-13T13:17:47Zoai:recipp.ipp.pt:10400.22/21611Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:41:39.887353Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers
title Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers
spellingShingle Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers
Bará, Salvador
Light pollution
Radiometry
Photometry
VIIRS-DNB
Outdoor lighting
title_short Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers
title_full Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers
title_fullStr Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers
title_full_unstemmed Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers
title_sort Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers
author Bará, Salvador
author_facet Bará, Salvador
Bao-Varela, Carmen
Lima, Raul Cerveira
author_role author
author2 Bao-Varela, Carmen
Lima, Raul Cerveira
author2_role author
author
dc.contributor.none.fl_str_mv Repositório Científico do Instituto Politécnico do Porto
dc.contributor.author.fl_str_mv Bará, Salvador
Bao-Varela, Carmen
Lima, Raul Cerveira
dc.subject.por.fl_str_mv Light pollution
Radiometry
Photometry
VIIRS-DNB
Outdoor lighting
topic Light pollution
Radiometry
Photometry
VIIRS-DNB
Outdoor lighting
description Low Earth orbit radiometers allow monitoring nighttime anthropogenic light emissions in wide areas of the planet. In this work we describe a simple model for assessing significant outdoor lighting changes at the municipality level using on-orbit measurements complemented with ground-truth information. We apply it to evaluate the transformation effected in the municipality of Ribeira (42°33'23"N, 8°59' 32" W) in Galicia, which in 2015 reduced the amount of installed lumen in its publicly-owned outdoor lighting system from 93.2 to 28.7 Mlm. This significant cutback, with the help of additional controls, allowed to reduce from 0.768 to 0.208 Mlm/km2 the lumen emission density averaged across the territory. In combination with the VIIRS-DNB annual composite readings these data allow to estimate that the relative weight of the emissions of the public treetlight system with respect to the total emissions of light in the municipality changed from an initial value of 74.86% to 44.68% after the transformation. The effects of the sources’ spectral shift and the photon calibration factor on the radiance reported by the VIIRS-DNB are also evaluated.
publishDate 2023
dc.date.none.fl_str_mv 2023-01
2023-01-01T00:00:00Z
2024-10-30T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.22/21611
url http://hdl.handle.net/10400.22/21611
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Bará, S., Bao-Varela, C., & Lima, R. C. (2023). Quantitative evaluation of outdoor artificial light emissions using low Earth orbit radiometers. Journal of Quantitative Spectroscopy and Radiative Transfer, 295, 108405. https://doi.org/https://doi.org/10.1016/j.jqsrt.2022.108405
0022-4073
10.1016/j.jqsrt.2022.108405
dc.rights.driver.fl_str_mv metadata only access
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rights_invalid_str_mv metadata only access
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:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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