Articles | Volume 26, issue 7
https://doi.org/10.5194/acp-26-4669-2026
https://doi.org/10.5194/acp-26-4669-2026
Research article
 | 
09 Apr 2026
Research article |  | 09 Apr 2026

A new data set of nighttime chemical heating rates in the upper mesosphere and lower thermosphere derived from SCIAMACHY OH (9–6) emissions and SABER profiles

Xiaolin Wu, Yajun Zhu, Anne K. Smith, Martin Kaufmann, Guoying Jiang, Shuai Liu, and Jiyao Xu

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Cited articles

Adler-Golden, S.: Kinetic parameters for OH nightglow modeling consistent with recent laboratory measurements, J. Geophys. Res., 8, https://doi.org/10.1029/97JA01622, 1997. a
Bovensmann, H., Burrows, J. P., Buchwitz, M., Frerick, J., Noël, S., Rozanov, V. V., Chance, K. V., and Goede, A. P. H.: SCIAMACHY: Mission objectives and measurement modes, J. Atmos. Sci., 56, 127–150, https://doi.org/10.1175/1520-0469(1999)056<0127:SMOAMM>2.0.CO;2, 1999. a, b
Brasseur, G. and Offermann, D.: Recombination of atomic oxygen near the mesopause: Interpretation of rocket data, J. Geophys. Res.-Atmos., 91, 10818–10824, https://doi.org/10.1029/JD091iD10p10818, 1986. a
Burkholder, J. B., Sander, S. P., Abbatt, J. P. D., Barker, J. R., Cappa, C., Crounse, J. D., Dibble, T. S., Huie, R. E., Kolb, C. E., Kurylo, M. J., Orkin, V. L., Percival, C. J., Wilmouth, D. M., and Wine, P. H.: Chemical Kinetics and Photochemical Data for Use in Atmospheric Studies, Evaluation No. 19, Jpl publication 19-5, Jet Propulsion Laboratory, Pasadena, CA, https://jpldataeval.jpl.nasa.gov/ (last access: 28 October 2025), 2020. a, b, c
Crutzen, P. J.: Energy conversions and mean vertical motions in the high latitude summer mesosphere and lower thermosphere, in: Astrophysics and Space Science Library, Springer Netherlands, Dordrecht, 78–88, https://doi.org/10.1007/978-94-010-3114-1_4, 1971. a
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Short summary
Chemical reactions are key to the energy budget of the upper mesosphere–lower thermosphere, but this process remains poorly quantified. We derived a new dataset of nighttime chemical heating by combining observations from two different satellite instruments. The main exothermic reactions, hydrogen reacting with ozone and oxygen recombination, dominate at different altitudes and vary seasonally. The new results revise previous estimates and provide constraints on the mesopause energy budget.
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