Articles | Volume 10, issue 6
Atmos. Meas. Tech., 10, 2209–2238, 2017
Atmos. Meas. Tech., 10, 2209–2238, 2017

Research article 13 Jun 2017

Research article | 13 Jun 2017

Comparisons of the Orbiting Carbon Observatory-2 (OCO-2) XCO2 measurements with TCCON

Debra Wunch et al.

Data sets

OCO-2 Level 2 bias-corrected XCO2 and other select fields from the full-physics retrieval aggregated as daily files, Retrospective processing V7r, version 7r OCO-2 Science Team/M. Gunson and A. Eldering

TCCON data from Park Falls, Wisconsin, USA, Release GGG2014R0 P. O. Wennberg, C. Roehl, D. Wunch, G. C. Toon, J.-F. Blavier, R. Washenfelder, G. Keppel-Aleks, N. Allen, and J. Ayers

TCCON data from Lamont, Oklahoma, USA, Release GGG2014R0 P. O. Wennberg, D. Wunch, C. Roehl, J.-F. Blavier, G. C. Toon, N. Allen, P. Dowell, K. Teske, C. Martin, and J. Martin

TCCON data from California Institute of Technology, Pasadena, California, USA, Release GGG2014R1 P. O. Wennberg, D. Wunch, C. Roehl, J.-F. L., Blavier, G. C. Toon, and N. Allen

TCCON data from Orleans, France, Release GGG2014R0 T. Warneke, J. Messerschmidt, J. Notholt, C. Weinzierl, N. M. Deutscher, C. Petri, P. Grupe, C. Vuillemin, F. Truong, M. Schmidt, M. Ramonet, and E. Parmentier

TCCON data from Paris, France, Release GGG2014R0 Y. Te, P. Jeseck, and C. Janssen

TCCON data from Garmisch, Germany, Release GGG2014R0 R. Sussmann and M. Rettinger

TCCON data from Eureka, Canada, Release GGG2014R0 K. Strong, J. Mendonca, D. Weaver, P. Fogal, J. Drummond, R. Batchelor, and R. Lindenmaier

TCCON data from Lauder, New Zealand, 125HR, Release GGG2014R0 V. Sherlock, B. J. Connor, J. Robinson, H. Shiona, D. Smale, and D. Pollard

TCCON data from Bremen, Germany, Release GGG2014R0 J. Notholt, C. Petri, T. Warneke, N. M. Deutscher, M. Buschmann, C. Weinzierl, R. Macatangay, and P. Grupe

TCCON data from Rikubetsu, Hokkaido, Japan, Release GGG2014R1 I. Morino, N. Yokozeki, T. Matzuzaki, and A. Shishime

TCCON data from Tsukuba, Ibaraki, Japan, 125HR, Release GGG2014R1 I. Morino, T. Matsuzaki, and A. Shishime

TCCON data from Saga, Japan, Release GGG2014R0 S. Kawakami, H. Ohyama, K. Arai, H. Okumura, C. Taura, T. Fukamachi, and M. Sakashita

TCCON data from Armstrong Flight Research Center, Edwards, CA, USA, Release GGG2014R0 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

TCCON data from Karlsruhe, Germany, Release GGG2014R1 F. Hase, T. Blumenstock, S. Dohe, J. Gross, and M. Kiel

TCCON data from Wollongong, Australia, Release GGG2014R0 D. W. T. Griffith, V. A. Velazco, N. M. Deutscher, C. Murphy, N. Jones, S. Wilson, R. Macatangay, G. Kettlewell, R. R. Buchholz, and M. Riggenbach

TCCON data from Darwin, Australia, Release GGG2014R0 D. W. T. Griffith, N. M. Deutscher, V. A. Velazco, P. O. Wennberg, Y. Yavin, G. K. Aleks, R. Washenfelder, G. C. Toon, J.-F. Blavier, C. Murphy, N. Jones, G. Kettlewell, B. J. Connor, R. Macatangay, C. Roehl, M. Ryczek, J. Glowacki, T. Culgan, and G. Bryant

TCCON data from Ascension Island, Saint Helena, Ascension and Tristan da Cunha, Release GGG2014R0 D. G. Feist, S. G. Arnold, N. John, and M. C. Geibel

TCCON data from Manaus, Brazil, Release GGG2014R0 M. Dubey, B. Henderson, D. Green, Z. Butterfield, G. Keppel-Aleks, N. Allen, J.-F. Blavier, C. Roehl, D. Wunch, and R. Lindenmaier

TCCON data from Bialystok, Poland, Release GGG2014R1 N. M. Deutscher, J. Notholt, J. Messerschmidt, C. Weinzierl, T. Warneke, C. Petri, P. Grupe, and K. Katrynski

TCCON data from Reunion Island (La Reunion), France, Release GGG2014R0 M. De Maziere, M. K. Sha, F. Desmet, C. Hermans, F. Scolas, N. Kumps, J.-M. Metzger, V. Duflot, and J.-P. Cammas

TCCON data from Izana, Tenerife, Spain, Release GGG2014R0 T. Blumenstock, F. Hase, M. Schneider, O. Garcia, and E. Sepulveda

Model code and software

RT Retrieval Framework OCO-2 Algorithm Team/M. Smyth and J. L. McDuffie

Short summary
This paper describes the comparisons between NASA's Orbiting Carbon Observatory (OCO-2) column-averaged dry-air mole fractions of CO2 with its primary ground-based validation network, the Total Carbon Column Observing Network (TCCON). The paper shows that while the standard bias correction reduces much of the spurious variability in the satellite measurements, residual biases remain.