Precision requirements for space-based XCO2 data

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Miller, C. E.
Crisp, D.
DeCola, P. L.
Olsen, S. C.
Randerson, James T.
Michalak, Anna M.
Alkhaled, A.
Rayner, Peter
Jacob, Daniel J.
Suntharalingam, Parvadha
Jones, D. B. A.
Denning, A. S.
Nicholls, M. E.
Doney, Scott C.
Pawson, S.
Boesch, H.
Connor, B. J.
Fung, Inez Y.
O'Brien, D.
Salawitch, R. J.
Sander, S. P.
Sen, B.
Tans, Pieter P.
Toon, G. C.
Wennberg, Paul O.
Wofsy, Steven C.
Yung, Y. L.
Law, R. M.
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Precision requirements are determined for space-based column-averaged CO2 dry air mole fraction (XCO2) data. These requirements result from an assessment of spatial and temporal gradients in XCO2, the relationship between XCO2 precision and surface CO2 flux uncertainties inferred from inversions of the XCO2 data, and the effects of XCO2 biases on the fidelity of CO2 flux inversions. Observational system simulation experiments and synthesis inversion modeling demonstrate that the Orbiting Carbon Observatory mission design and sampling strategy provide the means to achieve these XCO2 data precision requirements.
Author Posting. © American Geophysical Union, 2007. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 112 (2007): D10314, doi:10.1029/2006JD007659.
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Journal of Geophysical Research 112 (2007): D10314
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