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| Hauptseite > Publikationsdatenbank > Chemical heating rates derived from SCIAMACHY vibrationally excited OH limb emission spectra |
| Hauptseite > Publikationsdatenbank > Chemical heating rates derived from SCIAMACHY vibrationally excited OH limb emission spectra |
| Journal Article | PreJuSER-62638 |
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2008
Elsevier Science
Amsterdam [u.a.]
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Please use a persistent id in citations: doi:10.1016/j.asr.2007.07.045
Abstract: The SCIAMACHY instrument on board Envisat is able to measure nearly all vibrational transitions of mesospheric hydroxyl-from the ultraviolet to the near infrared spectral region.In this paper, we analyze SCIAMACHY limb emission data in the 1000-1750 nm spectral region by means of a new vibrational non-LTE model of OH. Several hydroxyl hotbands are identified. Vibrational non-LTE model calculations applying different collisional relaxation models are able to reproduce the measured spectra. Best agreement between model calculations and measured spectra is obtained, if a combination of multiquantum and step ladder single-quantum relaxation model is applied. Emissions from the OH(nu = 9) vibrational state are used to derive chemical heating rates from the SCIAMACHY spectra. Instantaneous heating rates are in the order of 10 K/day. (c) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.
Keyword(s): J ; hydroxyl (auto) ; mesosphere (auto) ; SCIAMACHY (auto) ; OH (auto) ; heating rates (auto)
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