Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/112071
Title: Validation Tests of the W2020 Energy Levels of Water Vapor
Authors: Campargue, A.
Mikhailenko, S. N.
Kassi, S.
Vasilchenko, S.
Issue Date: 2021
Publisher: Elsevier Ltd
Elsevier BV
Citation: Validation Tests of the W2020 Energy Levels of Water Vapor / A. Campargue, S. N. Mikhailenko, S. Kassi et al. // Journal of Quantitative Spectroscopy and Radiative Transfer. — 2021. — Vol. 276. — 107914.
Abstract: A decade ago, a task group of the International Union of Pure and Applied Chemistry performed an exhaustive collection and review of measured transitions, applied the MARVEL procedure, and derived recommended empirical energy levels for nine major water isotopologues. Very recently, using an improved methodology, the sets of empirical energy levels of H216O, H218O and H217O were updated, leading to the so-called W2020 energy levels and transition wavenumbers [Furtenbacher et al. J. Phys. Chem. Ref. Data 49 (2020) 043103; 10.1063/5.0030680]. Here we present validation tests of the W2020 line list of H216O against spectra recorded by cavity ring down spectroscopy (CRDS) referenced to a frequency comb (FC), newly obtained in the 8040-8630 cm−1 region. The recorded spectra are found in excellent agreement with previous high-quality studies available in the literature. While these literature sources were all incorporated in the transition database used to derive the W2020 energy levels, the direct superposition of the FC-CRDS spectra to the W2020 line list of H216O shows a number of large disagreements. Cases where deviations largely exceed the W2020 claimed uncertainty on the transition frequencies are noted. In the considered spectral region, the resulting W2020 list is thus less accurate than some of the published original sources used to derive the W2020 energy levels. We conclude that the sophisticated global procedure and algorithm elaborated to identify and adequately weight inaccurate line positions among the large W2020 transition database do not always prevent less accurate data from “spoiling” higher quality data sources. The W2020 list of H216O is also compared to newly recorded CRDS spectra in the 12970–13200 cm−1 region (corresponding to the region of the A-band of O2), where previous observations were very scarce. As in the previous region, substantial position deviations are evidenced, and in many cases, the W2020 error bars appear to be strongly underestimated. © 2021 Elsevier Ltd
Keywords: ABSORPTION SPECTROSCOPY
H2O
MARVEL
ROVIBRATIONAL ENERGY LEVEL
SPECTROSCOPIC DATABASE
WATER VAPOR
DATABASE SYSTEMS
LIGHT MEASUREMENT
WATER ABSORPTION
WATER VAPOR
CAVITY RING DOWN SPECTROSCOPIES
H2O
LINE LISTS
RO-VIBRATIONAL ENERGIES
ROVIBRATIONAL ENERGY LEVEL
SPECTRA'S
SPECTROSCOPIC DATABASE
VALIDATION TEST
WATER VAPOUR
ATOMIC ABSORPTION SPECTROSCOPY
DATABASE
ENERGY
URI: http://hdl.handle.net/10995/112071
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85115765352
PURE ID: 23714001
ISSN: 0022-4073
metadata.dc.description.sponsorship: The support of the CNRS (France) in the frame of International Research Project SAMIA is acknowledged. SNM activity was also partly supported in the frame of the Russian Science Foundation, Grant No. 18-11-00024-Π. CRDS measurements near 760 nm were performed at IAO-Tomsk and funded by RFBR project 20-32-70054.
RSCF project card: 18-11-00024
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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