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High resolution Fourier Transform spectroscopy at DLR for improving the spectral database of atmospheric species

Birk, Manfred und Wagner, Georg und Loos, Joep (2014) High resolution Fourier Transform spectroscopy at DLR for improving the spectral database of atmospheric species. GEISA Workshop 2014, 2014-06-03 - 2014-06-04, Paris, Frankreich.

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Kurzfassung

The DLR spectroscopy group has carried out high resolution Fourier-Transform spectroscopy of atmospheric species since 1990. The work started in the far-infrared, was extended to the nearinfrared and is recently expanded up to the UV region. The measurement of spectroscopic data with small and defined error margins was always the main target. The Fourier-Transform instrument including measurement conditions were optimized and sample cells and gas handling equipment built. Numerous software tools for retrieval and quality assessment were developed. Methods and hardware have been made for generating defined water/air and ozone/air mixtures including transport/flow into the sample cell. Species covered over the years are OH, HO2, H2O, CO, NO, NO2, O3, ClO, ClOOCl, BrO, CO2, ClONO2, N2O5 and very recently BrONO2. In many cases the resulting absorption cross sections and line parameters are included in the HITRAN database. The most recent development in hardware will be presented including a completely refurbished coolable multireflection cell (base length 80 cm, absorption path >150 m) and a four window coolable short cell, both capable of measurements from FIR to UV with excellent temperature homogeneity. A new fitting software was developed capable of performing microwindow-based interactive multi spectra fits making use of several line shape models, including, but not limited to, the pCqSDHC model [1] extended for Rosenkranz line mixing. The first result obtained is the analysis of pressure broadened ambient temperature N2O ν3 rovibrational band requiring speed dependence and line mixing. [1] N. H. Ngo, D. Lisak, H. Tran and J.-M. Hartmann, "An isolated line-shape model to go beyond the Voigt profile in spectroscopic databases and radiative transfer codes," Journal of Quantitative Spectroscopy and Radiative Transfer, no. 129, pp. 89-100, 2013.

elib-URL des Eintrags:https://elib.dlr.de/89976/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:High resolution Fourier Transform spectroscopy at DLR for improving the spectral database of atmospheric species
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Birk, Manfredmanfred.birk (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Wagner, Georggeorg.wagner (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Loos, Joepjoep.loos (at) dlr.dehttps://orcid.org/0000-0002-5899-4330NICHT SPEZIFIZIERT
Datum:Juni 2014
Referierte Publikation:Nein
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Fourier-Transform spectroscopy, atmospheric species, laboratory hardware, software, line parameter retrieval
Veranstaltungstitel:GEISA Workshop 2014
Veranstaltungsort:Paris, Frankreich
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:3 Juni 2014
Veranstaltungsende:4 Juni 2014
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben Spektrometrische Verfahren und Konzepte der Fernerkundung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > Experimentelle Verfahren
Hinterlegt von: Loos, Joep
Hinterlegt am:30 Jul 2014 17:45
Letzte Änderung:24 Apr 2024 19:55

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