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Temperature retrieval from Rayleigh-Brillouin scattering profiles measured in air

Witschas, Benjamin and Gu, Ziyu and Ubachs, Wim (2014) Temperature retrieval from Rayleigh-Brillouin scattering profiles measured in air. Optics Express, 22 (23), 29655 -29667. Optical Society of America. DOI: dx.doi.org/10.1364/AO.52.004640 ISSN 1094-4087

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Official URL: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-22-24-29655

Abstract

In order to investigate the performance of two different algorithms for retrieving temperature from Rayleigh-Brillouin (RB) line shapes, RB scattering measurements have been performed in air at a wavelength of 403 nm, for a temperature range from 257 K to 330 K, and atmospherically relevant pressures from 871 hPa to 1013 hPa. One algorithm, based on the Tenti S6 line shape model, shows very good accordance with the reference temperature. In particular, the absolute difference is always less than 2 K. A linear correlation yields a slope of 1.01 ± 0.02 and thus clearly demonstrates the reliability of the retrieval procedure. The second algorithm, based on an analytical line shape model, shows larger discrepancies of up to 9.9 K and is thus not useful at its present stage. The possible reasons for these discrepancies and improvements of the analytical model are discussed. The obtained outcomes are additionally verified with previously performed RB measurements in air, at 366 nm, temperatures from 255 K to 338 K and pressures from 643 hPa to 826 hPa [Appl. Opt. 52, 4640 (2013)]. The presented results are of relevance for future lidar studies that might utilize RB scattering for retrieving atmospheric temperature profiles with high accuracy.

Item URL in elib:https://elib.dlr.de/91275/
Document Type:Article
Title:Temperature retrieval from Rayleigh-Brillouin scattering profiles measured in air
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Witschas, BenjaminDLR, IPAUNSPECIFIED
Gu, ZiyuVU University AmsterdamUNSPECIFIED
Ubachs, Wimwimu (at) nat.vu.nlUNSPECIFIED
Date:November 2014
Journal or Publication Title:Optics Express
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:22
DOI :dx.doi.org/10.1364/AO.52.004640
Page Range:29655 -29667
Publisher:Optical Society of America
ISSN:1094-4087
Status:Published
Keywords:Temperature lidar, Rayleigh-Brillouin scattering, High-spectral-resolution lidar, Molecular light scattering
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben LIDAR-Forschung und -Entwicklung, R - Projekt ADM
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Witschas, Dr. Benjamin
Deposited On:19 Nov 2014 10:58
Last Modified:15 Jan 2019 11:30

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