Description: Chemical heating rates derived from SCIAMACHY vibrationally excited OH limb emission spectra

This title appears in the Scientific Report : 2008

Chemical heating rates derived from SCIAMACHY vibrationally excited OH limb emission spectra

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 n...

Personal Name(s):	Kaufmann, M.
	Lehmann, C. / Hoffmann, L. / Funke, B. / López-Puertas, M. / von Savigny, C. / Riese, M.
Contributing Institute:	Stratosphäre; ICG-1 Jülich-Aachen Research Alliance - Simulation Sciences; JARA-SIM
Published in:	Advances in Space Research, 41 (2008) S. 1914 - 1920
Imprint:	Amsterdam [u.a.] Elsevier Science 2008
Physical Description:	1914 - 1920
DOI:	10.1016/j.asr.2007.07.045
Document Type:	Journal Article
Research Program:	Atmosphäre und Klima
Series Title:	Advances in Space Research 41
Subject (ZB):	J hydroxyl mesosphere SCIAMACHY OH heating rates
	Publikationsportal JuSER

Please use the identifier: http://dx.doi.org/10.1016/j.asr.2007.07.045 in citations.

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.