Journal Article

PreJuSER-62638

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Chemical heating rates derived from SCIAMACHY vibrationally excited OH limb emission spectra

Kaufmann, M.FZJ* ; Lehmann, C.FZJ* ; Hoffmann, L.FZJ* ; Funke, B. ; López-Puertas, M. ; von Savigny, C. ; Riese, M.FZJ*

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)

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Atmosphäre und Klima (P22)

Appears in the scientific report 2008

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