On the accuracy of the limb sounding of the atmosphere in the 10.4 µm 15 µm CO2 
and 9.6 µm O-3 bands with account for non-LTE

Kostsov, V. S.; Timofeev, Y. M.; Grassl, Hartmut

doi:10.1016/0273-1177(95)00384-Q

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On the accuracy of the limb sounding of the atmosphere in the 10.4 µm 15 µm CO2 and 9.6 µm O-3 bands with account for non-LTE

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Grassl, Hartmut
MPI for Meteorology, Max Planck Society;

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Citation

Kostsov, V. S., Timofeev, Y. M., & Grassl, H. (1995). On the accuracy of the limb sounding of the atmosphere in the 10.4 µm 15 µm CO2 and 9.6 µm O-3 bands with account for non-LTE. Advances in Space Research, 16(Satellite monitoring of the earth's surface and atmosphere), 87-90.

Cite as: https://hdl.handle.net/21.11116/0000-0009-0E34-E

Abstract

Inverse problem of thermal radiation transfer accounting for non-LTE effects has been considered for limb geometry in the spectral region covering 10.4 mu m, 15 mu m CO2 and 9.6 mu m O-3 bands. Limb radiance has been calculated line-by-line on the basis of the non-LTE model describing day-time non-equilibrium populations of the vibrational states of CO2 and O-3 molecules which correspond to the bands under consideration. The inverse problem for the satellite limb radiance high resolution measurements in the spectral interval 540-1150 cm(-1) has been posed with respect to the simultaneous retrieval of the vertical profiles of pressure, kinetic temperature, number density of main absorbers, and vibrational temperatures of the states mentioned above. For the estimation of the retrieval accuracy the optimal estimation method has been applied, and the calculations of error matrices have been performed, The influence of the spectral resolution of measurements on the retrieval accuracy has been investigated, The conclusion has been done on the applicability of measurements to be performed in future by instruments similar to MIPAS to the investigations of non-LTE effects in the middle atmosphere.