Effects of uncertainties in atmospheric conditions on the accuracy of concentration measurements by the differential absorption method in the 9- to 11-um and 4.6- to 5.6-um spectral ranges

Andrey I. Bril; Arkady P. Ivanov; Vitaliy P. Kabashnikov; Natalya V. Kuzmina; V. M. Popov; Anatoly P. Chaikovsky

doi:10.1117/12.370508

19 November 1999 Effects of uncertainties in atmospheric conditions on the accuracy of concentration measurements by the differential absorption method in the 9- to 11-μm and 4.6- to 5.6-μm spectral ranges

Andrey I. Bril, Arkady P. Ivanov, Vitaliy P. Kabashnikov, Natalya V. Kuzmina, V. M. Popov, Anatoly P. Chaikovsky

Author Affiliations +

Proceedings Volume 3983, Sixth International Symposium on Atmospheric and Ocean Optics; (1999) https://doi.org/10.1117/12.370508
Event: Sixth International Symposium on Atmospheric and Ocean Optics, 1999, Tomsk, Russian Federation

Abstract

A potential source of errors at remote measurements of concentration of atmospheric gases by CO₂-lasers is the incomplete knowledge of atmospheric composition and temperature during measurements. This paper gives a general expression for errors owing to approximate description of the composition of the base of a statistical atmospheric model and of separate parameters measured during laser sounding. Measurements of additional atmospheric parameters are shown can reduce considerably the uncertainty in the concentration of a gas studied. A special computer code is designed to search pairs of frequencies with minimal error in mean-path horizontal measurements by using a topographic target. The performed calculations showed that a number of referenced experiments on remote measuring of atmospheric gas concentrations by CO₂-lasers were conducted at frequencies that did not provide the minimal atmospheric errors.6

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Andrey I. Bril, Arkady P. Ivanov, Vitaliy P. Kabashnikov, Natalya V. Kuzmina, V. M. Popov, and Anatoly P. Chaikovsky "Effects of uncertainties in atmospheric conditions on the accuracy of concentration measurements by the differential absorption method in the 9- to 11-μm and 4.6- to 5.6-μm spectral ranges", Proc. SPIE 3983, Sixth International Symposium on Atmospheric and Ocean Optics, (19 November 1999); https://doi.org/10.1117/12.370508

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