Optika Atmosfery i Okeana Journal

Vol. 21, issue 05, article # 4

Zakharov V. I., Blagodareva M. S., Gribanov K. G. The method of remote sensing of ¹³CO₂/¹²CO₂ ratio in the atmosphere using high resolution transmittance IR spectra. // Atmospheric and oceanic optics. 2008. V. 21. No. 05. P. 342-344. PDF
Copy the reference to clipboard

Abstract:

Monitoring of the ¹³CO₂/¹²CO₂ ratio in the atmosphere is one of the most important tasks of carbon cycle and global climate change control. The method of remote sensing of the column-averaged ¹³CO₂/¹²CO₂ ratio in the atmosphere is proposed for the first time. It is based on measuring the ratio of atmospheric optical depths for a homologous couple of ¹³CO₂ and ¹²CO₂ lines in high resolution transmittance spectra of solar radiation within range 6100-6300 cm^-1, which depends only on the columnar ratio ¹³CO₂/¹²CO₂ and does not depend on variations of temperature profile and solar zenith angle. A possibility of application of the method to atmospheric transmittance spectra measured with modern FTIR in the cloudless aerosol-free atmosphere is discussed.