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

DOI: 
10.1016/j.asr.2007.07.045
Publication date: 
01/01/2008
Main author: 
Kaufmann M.
IAA authors: 
Funke B.;López-Puertas M.
Authors: 
Kaufmann M., Lehmann C., Hoffmann L., Funke B., López-Puertas M., Savigny C.v., Riese M.
Journal: 
Advances in Space Research
Publication type: 
Article
Volume: 
41
Pages: 
1914-1920
Number: 
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(v = 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. © 2007 COSPAR.
Database: 
WOK
SCOPUS
ADS
URL: 
https://ui.adsabs.harvard.edu/#abs/2008AdSpR..41.1914K/abstract
ADS Bibcode: 
2008AdSpR..41.1914K
Keywords: 
Heating rates; Hydroxyl; Mesosphere; OH; SCIAMACHY