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Experimental observation of the ν2+4ν3 bands of HD16O and HD18O between 14975 and 15275 cm1

Chandran, S.; Dixneuf, S.; Orphal, J. 1,2; Ruth, A. A.
1 Institut für Meteorologie und Klimaforschung Atmosphärische Spurengase und Fernerkundung (IMKASF), Karlsruher Institut für Technologie (KIT)
2 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)

Abstract:

The ν2+4ν3 combination bands of HD16O and HD18O were measured using Fourier transform-incoherent broadband cavity-enhanced absorption spectroscopy (FT-IBBCEAS) with a spectral resolution of 0.08 cm1. The ro-vibrational lines of these bands were assigned through comparison with ab-initio molecular lines from the Tomsk variational calculation database (http://spectra.iao.ru/). For HD18O and HD16O in total 114 and 141 strong lines were assigned in the region between 14975.3 cm1 and 15243.3 cm1 and between 14998.5 cm1 and 15274.7 cm1, respectively. While the very satisfactory agreement of line intensities was used for line assignments, a systematic average discrepancy of ~0.305 cm1 in line positions was identified between the measured lines of HD18O and the theoretically predicted lines from the Tomsk database. Similarly for HD16O, an approximate wavenumber difference of ~0.361 cm1 was observed. The wavenumber accuracy of the Fourier transform cavity enhanced absorption spectrometer was confirmed on basis of concurrently measured H216O spectra in the region between 15254.2 cm1 and 15376.9 cm1 and corroborated the systematic shifts of the ab initio data. ... mehr

Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung Atmosphärische Spurengase und Fernerkundung (IMKASF)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 01.2021
Sprache Englisch
Identifikator ISSN: 0022-2852
KITopen-ID: 1000130875
HGF-Programm 12.11.13 (POF IV, LK 01) Long-term trends of global atmospheric composition
Erschienen in Journal of molecular spectroscopy
Verlag Elsevier
Band 375
Seiten Art. Nr.: 111395
Schlagwörter Water isotopologues, Overtone combination bands, Near infra-red, HD18O, HD16O, Fourier transform-incoherent broadband cavity enhanced absorption spectroscopy (FT-IBBCEAS), Trace gas sensing.
Nachgewiesen in Dimensions
Web of Science
Scopus

Verlagsausgabe §
DOI: 10.5445/IR/1000130875
Veröffentlicht am 24.03.2021
Originalveröffentlichung
DOI: 10.1016/j.jms.2020.111395
Scopus
Zitationen: 2
Web of Science
Zitationen: 2
Dimensions
Zitationen: 2
Seitenaufrufe: 161
seit 25.03.2021
Downloads: 103
seit 26.03.2021
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