Calculations of non-LTE limb-radiance spectral structure in 9.6-um ozone band

Yuri M. Timofeev; Vladimir S. Kostsov; Hartmut Grassl; R. O. Manuilova

doi:10.1117/12.140216

12 February 1993 Calculations of non-LTE limb-radiance spectral structure in 9.6-um ozone band

Yuri M. Timofeev, Vladimir S. Kostsov, Hartmut Grassl, R. O. Manuilova

Proceedings Volume 1715, Optical Methods in Atmospheric Chemistry; (1993) https://doi.org/10.1117/12.140216
Event: Environmental Sensing '92, 1992, Berlin, Germany

Abstract

The results of limb radiance calculations in the 9.6 micrometers ozone absorption band are presented for the tangent heights 30 - 110 km. Deviations from local thermodynamic equilibrium (LTE) are taken into account for 20 vibrational transitions forming (nu) ₁ and (nu) ₃ bands. The monochromatic limb radiance in line contours has been investigated for fundamental and hot bands for LTE and non-LTE. Variations of radiance stipulated by variations of kinetic, vibrational temperatures and ozone concentration have been analyzed. For day- and night-time limb radiance spectra have been calculated for different spectral resolutions. The approach is suggested to retrieve ozone profiles under non-LTE conditions using high-resolution limb spectral measurements (e.g., obtained by space-borne devices of MIPAS type).

Citation Download Citation

Yuri M. Timofeev, Vladimir S. Kostsov, Hartmut Grassl, and R. O. Manuilova "Calculations of non-LTE limb-radiance spectral structure in 9.6-um ozone band", Proc. SPIE 1715, Optical Methods in Atmospheric Chemistry, (12 February 1993); https://doi.org/10.1117/12.140216

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