Journal article

Evaluation of various observing systems for the global monitoring of CO2 surface fluxes

K Hungershoefer, F-M Breon, P Peylin, F Chevallier, P Rayner, A Klonecki, S Houweling, J Marshall



In the context of rising greenhouse gas concentrations, and the potential feedbacks between climate and the carbon cycle, there is an urgent need to monitor the exchanges of carbon between the atmosphere and both the ocean and the land surfaces. In the so-called top-down approach, the surface fluxes of CO2 are inverted from the observed spatial and temporal concentration gradients. The concentrations of CO2 are measured in-situ at a number of surface stations unevenly distributed over the Earth while several satellite missions may be used to provide a dense and better-distributed set of observations to complement this network. In this paper, we compare the ability of different CO2 concentrat..

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University of Melbourne Researchers


Awarded by European Space Agency

Awarded by CNES


Funding Acknowledgements

This study was supported by the European Space Agency under contract No. 20839/07/NL/HE. The authors are grateful to Paul Ingmann (ESA) and NOVELTIS, especially Pascal Prunet, for organizing the project. We would also like to thank all the project members, especially Didier Bruneau (Service d'Aeronomie, Verrieres, France) and Gerhard Ehret (German Aerospace Center, Oberpfaffenhofen, Germany) for the estimates of the performances of a lidar instrument. The OCO error estimate was provided by Hartmut Bosch (University for Leicester, UK). We would like to acknowledge the contribution of the CNES in the development of the analytical inversion tool used in this study (contract number DCT/SI/IM-2008-10419). This work was performed using HPC resources from GENCI - [CCRT/CINES/IDRIS] (Grant 2009-t2009012201) and from DSM [CCRT/CEA].