The HITRAN2020 molecular spectroscopic database

I. E. Gordon, L. S. Rothman, R.J. Hargreaves, R. Hashemi, E.V. Karlovets, F.M. Skinner, E.K. Conway, C. Hill, R.V. Kochanov, Y. Tan, Piotr Wcislo, A.A. Finenko, K. Nelson, P.F. Bernath, M. Birk, Vincent Boudon, A. Campargue, K.V. Chance, A. Coustenis, B.J. DrouinJean-Marie Flaud, Robert Gamache, J.T. Hodges, D. Jacquemart, E.J. Mlawer, Andrei Nikitin, Valery I. Perevalov, M. Rotger, Jonathan Tennyson, G.C. Toon, Ha Tran, Vladimir G. Tyuterev, E.M. Adkins, A. Baker, Alain Barbe, E. Canè, Attila G. Császár, A. Dudaryonok, Oleg Egorov, A.J. Fleisher, M. Fleurbaey, A. Foltynowicz, T. Furtenbacher, J.J. Harrison, J.M. Hartmann, V. M. Horneman, X. Huang, T. Karman, J. Karns, S. Kassi, I. Kleiner, V. Kofman, F. Kwabia–Tchana, N.N. Lavrentieva, T.J. Lee, D.A. Long, A.A. Lukashevskaya, O.M. Lyulin, V.Yu Makhnev, W. Matt, S.T. Massie, M. Melosso, S.N. Mikhailenko, Didier Mondelain, H.S.P. Müller, O.V. Naumenko, A. Perrin, Oleg L. Polyansky, E. Raddaoui, P.L. Raston, Z.D. Reed, Michaël Rey, C. Richard, R. Tóbiás, I. Sadiek, D.W. Schwenke, E. Starikova, K. Sung, F. Tamassia, Sergei A. Tashkun, Jean Vander Auwera, I.A. Vasilenko, A.A. Vigasin, G.L. Villanueva, Bastien Vispoel, G. Wagner, A. Yachmenev, Sergei N. Yurchenko

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Abstract

The HITRAN database is a compilation of molecular spectroscopic parameters. It was established in the early 1970s and is used by various computer codes to predict and simulate the transmission and emission of light in gaseous media (with an emphasis on terrestrial and planetary atmospheres). The HITRAN compilation is composed of five major components: the line-by-line spectroscopic parameters required for high-resolution radiative-transfer codes, experimental infrared absorption cross-sections (for molecules where it is not yet feasible for representation in a line-by-line form), collision-induced absorption data, aerosol indices of refraction, and general tables (including partition sums) that apply globally to the data. This paper describes the contents of the 2020 quadrennial edition of HITRAN. The HITRAN2020 edition takes advantage of recent experimental and theoretical data that were meticulously validated, in particular, against laboratory and atmospheric spectra. The new edition replaces the previous HITRAN edition of 2016 (including its updates during the intervening years).
All five components of HITRAN have undergone major updates. In particular, the extent of the updates in the HITRAN2020 edition range from updating a few lines of specific molecules to complete replacements of the lists, and also the introduction of additional isotopologues and new (to HITRAN) molecules: SO, CH3F, GeH4, CS2, CH3I and NF3. Many new vibrational bands were added, extending the spectral coverage and completeness of the line lists. Also, the accuracy of the parameters for major atmospheric absorbers has been increased substantially, often featuring sub-percent uncertainties. Broadening parameters associated with the ambient pressure of water vapor were introduced to HITRAN for the first time and are now available for several molecules.
The HITRAN2020 edition continues to take advantage of the relational structure and efficient interface available at www.hitran.org and the HITRAN Application Programming Interface (HAPI). The functionality of both tools has been extended for the new edition.
Original languageEnglish
Article number107949
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume277
DOIs
Publication statusPublished - Jan 2022

Funding

Portions of the research described in this paper were performed at the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. The research from the V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of Russian Academy of Sciences were supported by the Ministry of Science and Higher Education of the Russian Federation. The work of the Tomsk group on ozone spectroscopy was supported by the Russian Science Foundation RNF grant no. 19-12-00171. GSMA Reims and LiPhy Grenoble acknowledge support from the French-Russian collaboration program LIA CNRS \u201CSAMIA\u201D. AGC, TF, and RT received support from the ELTE Institutional Excellence Program (TKP2020-IKA-05) and from NKFIH (K119658). OLP and JT received support from the UK Natural Environment Research Council under grants NE/N001508/1 and the European Research Council under ERC Advanced Investigator grant 8838302 Development of the HITRAN2020 database and associated tools was supported through the NASA grants NNX17AI78G, NNX16AG51G, 80NSSC20K0962, 80NSSC20K1059.

FundersFunder number
Ministry of Education and Science of the Russian Federation
European Research Council
UK Research and Innovation
National Aeronautics and Space AdministrationNNX17AI78G, NNX16AG51G, 80NSSC20K0962, 80NSSC20K1059
Nemzeti Kutatási Fejlesztési és Innovációs HivatalK119658
Engineering Research Centers8838302
Natural Environment Research CouncilNE/N001508/1
Russian Science FoundationTKP2020-IKA-05, 19-12-00171

    Keywords

    • Absorption cross-sections
    • Aerosols
    • Collision-induced absorption
    • HITRAN
    • Molecular opacities
    • Molecular spectroscopy
    • Spectroscopic database
    • Spectroscopic line parameters

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