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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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Atmos. Meas. Tech., 3, 1351-1362, 2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
06 Oct 2010
Calibration of the Total Carbon Column Observing Network using aircraft profile data
D. Wunch1, G. C. Toon1,2, P. O. Wennberg1, S. C. Wofsy3, B. B. Stephens4, M. L. Fischer10, O. Uchino14, J. B. Abshire12, P. Bernath8,9, S. C. Biraud10, J.-F. L. Blavier1,2, C. Boone8, K. P. Bowman13, E. V. Browell11, T. Campos4, B. J. Connor7, B. C. Daube3, N. M. Deutscher5, M. Diao15, J. W. Elkins17, C. Gerbig16, E. Gottlieb3, D. W. T. Griffith5, D. F. Hurst17,18, R. Jiménez3,21, G. Keppel-Aleks1, E. A. Kort3, R. Macatangay5, T. Machida14, H. Matsueda19, F. Moore18, I. Morino14, S. Park3, J. Robinson20, C. M. Roehl1, Y. Sawa19, V. Sherlock6, C. Sweeney18, T. Tanaka14, and M. A. Zondlo15 1California Institute of Technology, Pasadena, CA, USA
2Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
3Harvard University, Cambridge, MA, USA
4National Center for Atmospheric Research, Boulder, CO, USA
5Center for Atmospheric Chemistry, University of Wollongong, Wollongong, NSW, Australia
6National Institute of Water & Atmospheric Research, Wellington, New Zealand
7BC Consulting Limited, Alexandra, New Zealand
8University of Waterloo, Waterloo, ON, Canada
9York University, York, UK
10Lawrence Berkeley National Laboratories, Berkeley, CA, USA
11NASA Langley Research Center, Hampton, VA, USA
12NASA Goddard Space Flight Center, Greenbelt, MD, USA
13Texas A&M University, College Station, TX, USA
14National Insitute for Environmental Studies, Tsukuba, Japan
15Princeton University, Princeton, NJ, USA
16Max-Planck-Institut für Biogeochemie, Jena, Germany
17National Oceanic and Atmospheric Administration, Boulder, CO, USA
18Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
19Meteorological Research Institute, Tsukuba, Japan
20National Institute of Water & Atmospheric Research, Lauder, New Zealand
21Department of Chemical and Enivronmental Engineering, Universidad Nacional de Colombia, Bogota, DC 111321, Colombia
Abstract. The Total Carbon Column Observing Network (TCCON) produces precise measurements of the column average dry-air mole fractions of CO2, CO, CH4, N2O and H2O at a variety of sites worldwide. These observations rely on spectroscopic parameters that are not known with sufficient accuracy to compute total columns that can be used in combination with in situ measurements. The TCCON must therefore be calibrated to World Meteorological Organization (WMO) in situ trace gas measurement scales. We present a calibration of TCCON data using WMO-scale instrumentation aboard aircraft that measured profiles over four TCCON stations during 2008 and 2009. These calibrations are compared with similar observations made in 2004 and 2006. The results indicate that a single, global calibration factor for each gas accurately captures the TCCON total column data within error.

Citation: Wunch, D., Toon, G. C., Wennberg, P. O., Wofsy, S. C., Stephens, B. B., Fischer, M. L., Uchino, O., Abshire, J. B., Bernath, P., Biraud, S. C., Blavier, J.-F. L., Boone, C., Bowman, K. P., Browell, E. V., Campos, T., Connor, B. J., Daube, B. C., Deutscher, N. M., Diao, M., Elkins, J. W., Gerbig, C., Gottlieb, E., Griffith, D. W. T., Hurst, D. F., Jiménez, R., Keppel-Aleks, G., Kort, E. A., Macatangay, R., Machida, T., Matsueda, H., Moore, F., Morino, I., Park, S., Robinson, J., Roehl, C. M., Sawa, Y., Sherlock, V., Sweeney, C., Tanaka, T., and Zondlo, M. A.: Calibration of the Total Carbon Column Observing Network using aircraft profile data, Atmos. Meas. Tech., 3, 1351-1362,, 2010.
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