Evidence of non-LTE in the CO2 15 mu m weak bands from ISAMS and WINDII observations

DOI: 
10.1029/96GL03704
Publication date: 
15/02/1997
Main author: 
LopezPuertas, M
IAA authors: 
LopezPuertas, M
Authors: 
LopezPuertas, M; Dudhia, A; Shepherd, MG; Edwards, DP
Journal: 
GEOPHYSICAL RESEARCH LETTERS
Publication type: 
Article
Volume: 
24
Pages: 
361-364
Number: 
Abstract: 
An analysis of the measurements of the CO2 15 mu m radiance emission by the UARS/ISAMS 30W channel and the kinetic temperature from UARS/WINDII taken on July 21, 1992 at northern latitudes around the mesopause is presented. The modeling of the measurements clearly show evidence of non-LTE emissions in the CO2 (nu(2)=1) levels of the minor isotopes 636, 628, and 627 in the 70-90 km region. A comparison with non-LTE model predictions by Lopez-Puertas et al. [1992a] shows a good agreement within the errors in the measured quantities. This constitutes the first experimental evidence of non-LTE emissions in these CO2 15 mu m weak bands. The measurements also represent indirect evidence of the net radiative heating produced by these bands around the summer mesopause.
Database: 
WOK
ADS
URL: 
https://ui.adsabs.harvard.edu/#abs/1997GeoRL..24..361L/abstract
ADS Bibcode: 
1997GeoRL..24..361L
Keywords: