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Volume 10, issue 7 | Copyright
Atmos. Meas. Tech., 10, 2759-2771, 2017
https://doi.org/10.5194/amt-10-2759-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 31 Jul 2017

Research article | 31 Jul 2017

Evaluation and attribution of OCO-2 XCO2 uncertainties

John R. Worden et al.
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Bösch, H., Toon, G. C., Sen, B., Washenfelder, R. A., wennberg, P., buchwitz, M., de Beek, R., Burrows, J., Crisp, D., Christi, M., Connor, B., Natraj, V., and Yung, Y.: Space-based near-infrared CO2 measurements: Testing the Orbiting Carbon Observatory retrieval algorithm and validation concept using SCIAMACHY observations over Park Falls, Wisconsin, J. Geophys. Res.-Atmos., 111, D23302, https://doi.org/10.1029/2006JD007080, 2006.
Boesch, H., Baker, D., Connor, B., Crisp, D., and Miller, C.: Global Characterization of CO2 Column Retrievals from Shortwave-Infrared Satellite Observations of the Orbiting Carbon Observatory-2 Mission, Remote Sensing, 3, 270–304, https://doi.org/10.3390/rs3020270, 2011.
Bowman, K. W., Rodgers, C. D., Kulawik, S. S., Worden, J., Sarkissian, E., Osterman, G., Steck, T., Lou, M., Eldering, A., and Shephard, M.: Tropospheric emission spectrometer: Retrieval method and error analysis, IEEE T. Geosci. Remote, 44, 1297–1307, 2006.
Boxe, C. S., Worden, J. R., Bowman, K. W., Kulawik, S. S., Neu, J. L., Ford, W. C., Osterman, G. B., Herman, R. L., Eldering, A., Tarasick, D. W., Thompson, A. M., Doughty, D. C., Hoffmann, M. R., and Oltmans, S. J.: Validation of northern latitude Tropospheric Emission Spectrometer stare ozone profiles with ARC-IONS sondes during ARCTAS: sensitivity, bias and error analysis, Atmos. Chem. Phys., 10, 9901–9914, https://doi.org/10.5194/acp-10-9901-2010, 2010.
Connor, B. J., Boesch, H., Toon, G., Sen, B., Miller, C., and Crisp, D.: Orbiting Carbon Observatory: Inverse method and prospective error analysis, J. Geophys. Res, 113, D05305, https://doi.org/10.1029/2006JD008336, 2008.
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This paper evaluates the uncertainties of the total column carbon dioxide (XCO2) measurements from the NASA OCO-2 instrument by comparing observed variations in small geographical regions to the calculated uncertainties of the data within this region. In general we find that the reported XCO2 precision is related to that expected from the XCO2 radiance noise. However, the reported accuracy is at least smaller than the actual accuracy by a factor of 2–4.
This paper evaluates the uncertainties of the total column carbon dioxide (XCO2) measurements...
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