Intercomparability of XCO2 and XCH4 from the United States TCCON sites

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

doi:https://doi.org/10.5194/amt-10-1481-2017

Articles | Volume 10, issue 4

https://doi.org/10.5194/amt-10-1481-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-10-1481-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 10, issue 4

Research article

|

20 Apr 2017

Research article |

| 20 Apr 2017

Intercomparability of X_CO₂ and X_CH₄ 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

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.