Precision requirements for space-based XCO2 data

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Read Full Article (file size: 1847027 bytes) Cited by JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 112, D10314, doi:10.1029/2006JD007659, 2007 Precision requirements for space-based X_CO₂ data C. E. Miller Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA D. Crisp Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA P. L. DeCola Science Mission Directorate, NASA Headquarters, Washington, DC, USA S. C. Olsen Los Alamos National Laboratory, Los Alamos, New Mexico, USA J. T. Randerson Department of Earth System Science, University of California, Irvine, California, USA A. M. Michalak Department of Civil and Environmental Engineering, The University of Michigan, Ann Arbor, Michigan, USA Department of Atmospheric, Oceanic, and Space Sciences, The University of Michigan, Ann Arbor, Michigan, USA A. Alkhaled Department of Civil and Environmental Engineering, The University of Michigan, Ann Arbor, Michigan, USA P. Rayner Laboratoire des Sciences du Climat et de l'Environnement/IPSL, CEA-CNRS-UVSQ, Gif-sur-Yvette, France D. J. Jacob Division of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts, USA Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts, USA P. Suntharalingam Division of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts, USA Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts, USA D. B. A. Jones Department of Physics, University of Toronto, Toronto, Ontario, Canada A. S. Denning Atmospheric Science Department, Colorado State University, Fort Collins, Colorado, USA M. E. Nicholls Atmospheric Science Department, Colorado State University, Fort Collins, Colorado, USA S. C. Doney Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA S. Pawson Goddard Earth Science and Technology Center, Baltimore, Maryland, USA Global Modeling and Assimilation Office, Code 610.1, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA H. Boesch Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA B. J. Connor Atmospheric Research, National Institute of Water and Atmospheric Research, Central Otago, Omakau, New Zealand I. Y. Fung Berkeley Atmospheric Sciences Center, University of California, Berkeley, California, USA D. O'Brien Atmospheric Science Department, Colorado State University, Fort Collins, Colorado, USA R. J. Salawitch Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA S. P. Sander Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA B. Sen Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA P. Tans Earth System Research Laboratory, Global Monitoring Division, NOAA, Boulder, Colorado, USA G. C. Toon Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA P. O. Wennberg Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California, USA S. C. Wofsy Division of Engineering and Applied Science, Harvard University, Cambridge, Massachusetts, USA Y. L. Yung Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California, USA R. M. Law CSIRO Marine and Atmospheric Research, Aspendale, Victoria, Australia Abstract Precision requirements are determined for space-based column-averaged CO₂ dry air mole fraction (X _CO₂) data. These requirements result from an assessment of spatial and temporal gradients in X _CO₂, the relationship between X _CO₂ precision and surface CO₂ flux uncertainties inferred from inversions of the X _CO₂ data, and the effects of X _CO₂ 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 X _CO₂ data precision requirements. Received 15 June 2006; accepted 11 January 2007; published 26 May 2007. Index Terms: 0428 Biogeosciences: Carbon cycling (4806); 0490 Biogeosciences: Trace gases; 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry; 1610 Global Change: Atmosphere (0315, 0325); 1640 Global Change: Remote sensing (1855). Read Full Article (file size: 1847027 bytes) Cited by Citation: Miller, C. E., et al. (2007), Precision requirements for space-based X_CO₂ data, J. Geophys. Res., 112, D10314, doi:10.1029/2006JD007659. Copyright 2007 by the American Geophysical Union.

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