Evidence for N 2 O ν 3 4.5 μ m non-local thermodynamic equilibrium emission in the atmosphere
✍ Scribed by López-Puertas, M.; Funke, B.; Bermejo-Pantaleón, D.; von Clarmann, T.; Stiller, G. P.; Grabowski, U.; Höpfner, M.
- Book ID
- 119669761
- Publisher
- American Geophysical Union
- Year
- 2007
- Tongue
- English
- Weight
- 342 KB
- Volume
- 34
- Category
- Article
- ISSN
- 1944-8007
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This paper presents for the first time theoretical estimates of the non-local thermodynamic equilibrium (NLTE) populations for vibrational states of the N,O and CH, molecules in the stratosphere and mesosphere. For N,O the nighttime heights of the transition to NLTE decrease with vibrational energy
The experimental technique which consists of exciting a mixture of N 2 O and N 2 by radio frequency is very efficient for populating very high vibrational levels. Twelve emission spectra of mixtures of N 2 O and N 2 were recorded with a Fourier transform spectrometer at resolutions of 0.006, 0.004,
Eight emission spectra of pure N 2 O and N 2 O + N 2 + He mixtures excited by a radio frequency discharge were recorded by Fourier Transform Spectroscopy at a resolution of 0.005 and 0.004 cm À1 in the 4.5 lm region. Results (wavenumbers, band centers, and spectroscopic constants) concerning nine ne