Possibilities of thermal sounding of the atmosphere under non-LTE conditions

V. S. Kostsov, Yuri M. Timofeyev, Hartmut Grassl, H. D. Hollweg

Research outputpeer-review

Abstract

Remote sensing methods (space-borne, air-borne, and ground-based) are presently widely used for obtaining information on atmospheric composition and thermal regime. Modern IR remote sensing methods are based on the validity of local thermodynamic equilibrium (LTE), which is not true in the upper atmosphere (height of breaking of LTE depends on gas, absorption band, and time under consideration). The non-LTE limb radiance has been calculated in 15 μm CO2 band for tangent heights 50 -110 km. The inverse problem has been formulated including the retrieval of vibrational temperature profiles for the lower vibrational states of CO2 molecule. The method is based on measurements of high-resolution limb radiance spectra. The retrieval accuracy has been investigated depending on measurement error, spectral resolution, and spectral region used.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Pages550-561
Number of pages12
Volume1715
ISBN (Print)0819408808
Publication statusPublished - 1 Jan 1993
Externally publishedYes
EventOptical Methods in Atmospheric Chemistry - Berlin, Ger
Duration: 22 Jun 199224 Jun 1992

Conference

ConferenceOptical Methods in Atmospheric Chemistry
CityBerlin, Ger
Period22/06/9224/06/92

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Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Kostsov, V. S., Timofeyev, Y. M., Grassl, H., & Hollweg, H. D. (1993). Possibilities of thermal sounding of the atmosphere under non-LTE conditions. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 1715, pp. 550-561). SPIE.