Articles | Volume 10, issue 4
https://doi.org/10.5194/amt-10-1481-2017
https://doi.org/10.5194/amt-10-1481-2017
Research article
 | 
20 Apr 2017
Research article |  | 20 Apr 2017

Intercomparability of XCO2 and XCH4 from the United States TCCON sites

Jacob K. Hedelius, Harrison Parker, Debra Wunch, Coleen M. Roehl, Camille Viatte, Sally Newman, Geoffrey C. Toon, James R. Podolske, Patrick W. Hillyard, Laura T. Iraci, Manvendra K. Dubey, and Paul O. Wennberg

Data sets

TCCON data from California Institute of Technology, Pasadena, California, USA, Release GGG2014R1 P. O. Wennberg, D. Wunch, C. Roehl, J.-F. Blavier, G. C. Toon, and N. Allen https://doi.org/10.14291/tccon.ggg2014.pasadena01.R1/1182415

TCCON data from Armstrong Flight Research Center, Edwards, CA, USA, Release GGG2014R1 L. Iraci, J. Podolske, P. Hillyard, C. Roehl, P. O. Wennberg, J.-F. Blavier, J. Landeros, N. Allen, D. Wunch, J. Zavaleta, E. Quigley, G. Osterman, R. Albertson, K. Dunwoody, and H. Boyden https://doi.org/10.14291/tccon.ggg2014.edwards01.R1/1255068

TCCON data from Lamont, Oklahoma, USA, Release GGG2014R1 P. O. Wennberg, D. Wunch, C. Roehl, J.-F. Blavier, G. C. Toon, N. Allen, P. Dowell, K. Teske, C. Martin, and J. Martin https://doi.org/10.14291/tccon.ggg2014.lamont01.R1/1255070

TCCON data from Park Falls, Wisconsin, USA, Release GGG2014R0 P. O. Wennberg, C. Roehl, D. Wunch, G. C. Toon, J.-F., and J. Ayers https://doi.org/10.14291/tccon.ggg2014.parkfalls01.R0/1149161

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Short summary
Two portable spectrometers, assumed to be internally precise, were taken to four different sites with (stationary) TCCON spectrometers. Biases of column averaged CO2 and CH4 measured among the TCCON sites were estimated experimentally. Results suggest that maximum (95 % confidence interval) bias among sites is less than what was estimated from a previous analytical error analysis.