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Spontaneous Rayleigh-Brillouin scattering of ultraviolet light in nitrogen, dry air, and moist air

Witschas, Benjamin and Vieitez, Maria Ofelia and van Duijn, Eric-Jan and Reitebuch, Oliver and van de Water, Willem and Ubachs, Wim (2010) Spontaneous Rayleigh-Brillouin scattering of ultraviolet light in nitrogen, dry air, and moist air. Applied optics, 49 (22), pp. 4217-4227.

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Official URL: http://www.opticsinfobase.org/abstract.cfm?URI=ao-49-22-4217

Abstract

Atmospheric lidar techniques for the measurement of wind, temperature, and optical properties of aerosols rely on the exact knowledge of the spectral line shape of the scattered laser light on molecules. We report on spontaneous Rayleigh–Brillouin scattering measurements in the ultraviolet at a scattering angle of 90° on N2 and on dry and moist air. The measured line shapes are compared to the Tenti S6 model, which is shown to describe the scattering line shapes in air at atmospheric pressures with small but significant deviations.We demonstrate that the line profiles of N2 and air under equal pressure and temperature conditions differ significantly, and that this difference can be described by the S6 model. Moreover, we show that even a high water vapor content in air up to a volume fraction of 3:6 vol:% has no influence on the line shape of the scattered light. The results are of relevance for the future spaceborne lidars on ADM-Aeolus (Atmospheric Dynamics Mission) and EarthCARE (Earth Clouds, Aerosols, and Radiation Explorer).

Document Type:Article
Title:Spontaneous Rayleigh-Brillouin scattering of ultraviolet light in nitrogen, dry air, and moist air
Authors:
AuthorsInstitution or Email of Authors
Witschas, BenjaminBenjamin.Witschas@dlr.de
Vieitez, Maria OfeliaVrije Univ. Amsterdam, NL
van Duijn, Eric-JanVrije Univ. Amsterdam, NL
Reitebuch, OliverOliver.Reitebuch@dlr.de
van de Water, WillemUniv. of Technology Eindhoven, NL
Ubachs, WimVrije Univ. Amsterdam, NL
Date:27 July 2010
Journal or Publication Title:Applied optics
Refereed publication:Yes
In SCOPUS:Yes
In ISI Web of Science:No
Volume:49
Page Range:pp. 4217-4227
Status:Published
Keywords:ADM-Aeolus, Rayleigh-Brillouin scattering, LIDAR, spectroscopy, Tenti model
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 - Projekt ADM II (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Dr. Benjamin Witschas
Deposited On:04 Aug 2010 15:48
Last Modified:12 Dec 2013 21:00

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