elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

The impact of aerosols on polarized sky radiance: model development, validation, and applications

Emde, Claudia and Buras, R. and Mayer, B. and Blumthaler, M. (2010) The impact of aerosols on polarized sky radiance: model development, validation, and applications. Atmospheric Chemistry and Physics, 10, pp. 383-396. DOI: 10.5194/acp-10-383-2010.

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
1MB

Official URL: http://www.atmos-chem-phys.net/10/383/2010/

Abstract

Although solar radiation initially is unpolarized when entering the Earth's atmosphere, it is polarized by scattering processes with molecules, water droplets, ice crystals, and aerosols. Hence, measurements of the polarization state of radiation can be used to improve remote sensing of aerosols and clouds. The analysis of polarized radiance measurements requires an accurate radiative transfer model. To this end, a new efficient and flexible three-dimensional Monte Carlo code to compute polarized radiances has been developed and implemented into MYSTIC (Monte Carlo code for the phYSically correct Tracing of photons In Cloudy atmospheres). The code has been extensively validated against published benchmark results. The polarized downwelling radiation field is calculated for various aerosol types showing the high sensitivity of polarized ultraviolet radiances to the particle microphysics. Model simulations are compared to ground based measurements and found to be qualitatively in good agreement. Quantitative differences can be attributed to the assumed aerosol models based on the OPAC aerosol database, which does not include exactly the types of aerosols that have been observed. This comparison to the measurements shows that there is a high potential to retrieve information about the aerosol type from polarized radiance measurements.

Document Type:Article
Title:The impact of aerosols on polarized sky radiance: model development, validation, and applications
Authors:
AuthorsInstitution or Email of Authors
Emde, ClaudiaUNSPECIFIED
Buras, R.UNSPECIFIED
Mayer, B.UNSPECIFIED
Blumthaler, M.Medizinische Univ. Innsbruck, Innsbruck, A
Date:1 January 2010
Journal or Publication Title:Atmospheric Chemistry and Physics
Refereed publication:Yes
In Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:10
DOI:10.5194/acp-10-383-2010
Page Range:pp. 383-396
Status:Published
Keywords:radiative transfer, polarization, Monte Carlo method, aerosols, clouds
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:26 Oct 2010 10:15
Last Modified:12 Dec 2013 21:03

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.