1. “2. Carbon Cycle Greenhouse Gases,” Ed. by T. J. Conway, A. E. Andrews, L. Bruhweler, et al., in Climate Monitoring and Diagnostics Laboratory Summary Report, 2002–2003, Ed. by R. C. Scnell (NOAA Oceanic and Atmospheric Research, Boulder, CO, 2004).
2. WMO WDCGG Data Summary, WDCGG No. 30, GAW Data, Vol. IV, Greenhouse Gases and Other Atmospheric Gases (JMA & WMO, Geneva, 2006).
3. W. D. Komhyr, L. S. Waterman, and W. R. Taylor, “Semiautomatic Nondispersive Infrared Analyzer Apparatus for CO2 Air Sample Analyses,” J. Geophys. Res. C 88, 1315–1329 (1983).
4. R. M. Akimenko, V. N. Aref’ev, N. E. Kamenogradskii, et al., “Spectroscopic Method of Determining the CO2 Content in the Atmosphere,” Meteorol. Gidrol., No. 6, 102–105 (1979).
5. L. Wallace and W. Livingston, “Spectroscopic Observations of Atmospheric Trace Gases over Kitt Peak: 1. Carbon Dioxide and Methane from 1979 to 1985,” J. Geophys. Res. D 95, 9823–9827 (1990).