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Measuring the influence of aerosols and albedo on sky polarization

Kreuter, A. and Emde, Claudia and Blumthaler, M. (2010) Measuring the influence of aerosols and albedo on sky polarization. Atmospheric Research, 98, pp. 363-367. DOI: 10.1016/j.atmosres.2010.07.010.

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Official URL: http://www.sciencedirect.com/science/article/pii/S0169809510001857

Abstract

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.

Document Type:Article
Title:Measuring the influence of aerosols and albedo on sky polarization
Authors:
AuthorsInstitution or Email of Authors
Kreuter, A.Innsbruck Medical Univ., Innsbruck, A
Emde, ClaudiaLMU / DLR
Blumthaler, M.Medizinische Univ. Innsbruck, Innsbruck, A
Date:2010
Journal or Publication Title:Atmospheric Research
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:98
DOI:10.1016/j.atmosres.2010.07.010
Page Range:pp. 363-367
Status:Published
Keywords:Polarized sky radiance Aerosols, AOD, Albedo, All-sky camera
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Atmosphären- und Klimaforschung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Remote Sensing
Deposited By: Jana Freund
Deposited On:28 Oct 2010 18:28
Last Modified:26 Mar 2013 13:21

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