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Pressure broadening, -shifts, speed dependences and line mixing in the v3 rovibrational band of N2O

Loos, Joep and Birk, Manfred and Wagner, Georg (2014) Pressure broadening, -shifts, speed dependences and line mixing in the v3 rovibrational band of N2O. EUMETRISPEC Stakeholder Workshop 2, 09.-10. Okt. 2014, Braunschweig, Deutschland.

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Abstract

In this poster, we report measured air-broadening, -shift, speed dependence and Rosenkranz line mixing parameters for the v3 fundamental rovibrational band of N2O. A Bruker IFS 125HR Fourier transform spectrometer was used with a White-type multipass absorption cell with 46.4 m absorption path length to measure four ambient temperature airbroadened absorption spectra at total pressures ranging from 100 to 1000 mbar. A multispectrum fitting technique was used to retrieve parameters up to |m|=40 (m=-J'' and m=J''+1 for the P and R branch, respectively) utilizing the partially correlated quadratic speed-dependent hard collision model including Rosenkranz line mixing. Speed dependence of the broadening parameter as well as line mixing could be observed in the spectra. The broadening parameters are compared to HITRAN2012, where deviations can be ascribed to the influence of neglecting speed dependence effects in spectra analyses when using the Voigt line profile. The line mixing coefficients show a smooth dependence on m.

Item URL in elib:https://elib.dlr.de/91065/
Document Type:Conference or Workshop Item (Poster)
Title:Pressure broadening, -shifts, speed dependences and line mixing in the v3 rovibrational band of N2O
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Loos, Joepjoep.loos (at) dlr.deUNSPECIFIED
Birk, Manfredmanfred.birk (at) dlr.deUNSPECIFIED
Wagner, Georggeorg.wagner (at) dlr.deUNSPECIFIED
Date:October 2014
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:N2O, ntrous oxide, line shape, line mixing, speed dependence
Event Title:EUMETRISPEC Stakeholder Workshop 2
Event Location:Braunschweig, Deutschland
Event Type:Workshop
Event Dates:09.-10. Okt. 2014
Organizer:PTB
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 Spektrometrische Verfahren und Konzepte der Fernerkundung (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Experimental Methods
Deposited By: Loos, Joep
Deposited On:13 Oct 2014 09:14
Last Modified:31 Jul 2019 19:48

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