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Measuring the influence of aerosols and albedo on sky polarization

All-sky distributions of the polarized radiance are measured using an automated fish-eye camera system with a rotating polarizer. For a large range of aerosol and surface albedo situations, the influence on the degree of polarization and sky radiance is investigated. The range of aerosol optical dep...

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Detalles Bibliográficos
Autores principales: Kreuter, A., Emde, C., Blumthaler, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Science Publishers 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3778937/
https://www.ncbi.nlm.nih.gov/pubmed/24068851
http://dx.doi.org/10.1016/j.atmosres.2010.07.010
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author Kreuter, A.
Emde, C.
Blumthaler, M.
author_facet Kreuter, A.
Emde, C.
Blumthaler, M.
author_sort Kreuter, A.
collection PubMed
description All-sky distributions of the polarized radiance are measured using an automated fish-eye camera system with a rotating polarizer. For a large range of aerosol and surface albedo situations, the influence on the degree of polarization and sky radiance is investigated. The range of aerosol optical depth and albedo is 0.05–0.5 and 0.1–0.75, respectively. For this range of parameters, a reduction of the degree of polarization from about 0.7 to 0.4 was observed. The analysis is done for 90° scattering angle in the principal plane under clear sky conditions for a broadband channel of 450 ± 25 nm and solar zenith angles between 55° and 60°. Radiative transfer calculations considering three different aerosol mixtures are performed and and agree with the measurements within the statistical error.
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spelling pubmed-37789372013-09-23 Measuring the influence of aerosols and albedo on sky polarization Kreuter, A. Emde, C. Blumthaler, M. Atmos Res Article All-sky distributions of the polarized radiance are measured using an automated fish-eye camera system with a rotating polarizer. For a large range of aerosol and surface albedo situations, the influence on the degree of polarization and sky radiance is investigated. The range of aerosol optical depth and albedo is 0.05–0.5 and 0.1–0.75, respectively. For this range of parameters, a reduction of the degree of polarization from about 0.7 to 0.4 was observed. The analysis is done for 90° scattering angle in the principal plane under clear sky conditions for a broadband channel of 450 ± 25 nm and solar zenith angles between 55° and 60°. Radiative transfer calculations considering three different aerosol mixtures are performed and and agree with the measurements within the statistical error. Elsevier Science Publishers 2010-11 /pmc/articles/PMC3778937/ /pubmed/24068851 http://dx.doi.org/10.1016/j.atmosres.2010.07.010 Text en © 2010 Elsevier B.V. https://creativecommons.org/licenses/by-nc-nd/3.0/ Open Access under CC BY-NC-ND 3.0 (https://creativecommons.org/licenses/by-nc-nd/3.0/) license
spellingShingle Article
Kreuter, A.
Emde, C.
Blumthaler, M.
Measuring the influence of aerosols and albedo on sky polarization
title Measuring the influence of aerosols and albedo on sky polarization
title_full Measuring the influence of aerosols and albedo on sky polarization
title_fullStr Measuring the influence of aerosols and albedo on sky polarization
title_full_unstemmed Measuring the influence of aerosols and albedo on sky polarization
title_short Measuring the influence of aerosols and albedo on sky polarization
title_sort measuring the influence of aerosols and albedo on sky polarization
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3778937/
https://www.ncbi.nlm.nih.gov/pubmed/24068851
http://dx.doi.org/10.1016/j.atmosres.2010.07.010
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