Optika Atmosfery i Okeana Journal

Vol. 26, issue 01, article # 7

Rokotyan N. V., Zakharov V. I., Gribanov K. G., Jouzel J., Warneke T., Notholt J. The possibility of atmospheric remote sensing of carbon gases isotopologues using ground-based high-resolution FTIRs. // Optika Atmosfery i Okeana. 2013. V. 26. No. 01. P. 46-51 [in Russian].
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Abstract:

Relative concentration of ¹³CH₄, ¹²CH₄ and ¹³CO₂, ¹²CO₂ in the atmosphere contains information about carbon dioxide and methane emission sources. High resolution of modern ground-based IR Fourier spectrometers allows one to resolve absorption lines of different isotopologues of the trace gases in atmospheric transmittance spectra. The modeling of synthetic atmospheric transmittance spectra within 2200-11000 cm^-1 spectral region has been done and good signals of ¹³CH₄ and ¹³CO₂ were found. Several atmospheric transmittance spectra measured with ground-based FTIR at the Ural Atmospheric Station in Kourovka and at the Institute of Environmental Physics of Bremen University during 2010-2011 have been selected and processed. This paper presents a method and first results on the remote sensing of ¹³CH₄/¹²CH₄ (δ¹³C_CH4) and ¹³CO₂/¹²CO₂ (δ¹³CO₂) in the atmoshpere.

Keywords:

carbon gases isotopologues, atmospheric remote sensing, FTIR spectrometry, greenhouse gases