Journal article
On the impact of transport model errors for the estimation of CO 2 surface fluxes from GOSAT observations
F Chevallier, L Feng, H Bösch, PI Palmer, PJ Rayner
Geophysical Research Letters | AMER GEOPHYSICAL UNION | Published : 2010
DOI: 10.1029/2010GL044652
Abstract
A series of observing system simulation experiments is presented in which column averaged dry air mole fractions of CO2 (XCO2) from the Greenhouse gases Observing SATellite (GOSAT) are made consistent or not with the transport model embedded in a flux inversion system. The GOSAT observations improve the random errors of the surface carbon budget despite the inconsistency. However, we find biases in the inferred surface CO2 budget of a few hundred MtC/a at the subcontinental scale, that are caused by differences of only a few tenths of a ppm between the simulations of the individual XCO2 soundings. The accuracy and precision of the inverted fluxes are little sensitive to an 8-fold reduction i..
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Awarded by European Commission
Funding Acknowledgements
This work was performed using HPC resources from GENCI- [CCRT/CINES/IDRIS] (Grant 2009-t2009012201) and DSM. It was co-funded by the European Commission under the EU Seventh Research Framework Programme (grant agreements 212196, COCOS, and 218793, MACC) and by the British Council under a grant from the Franco-British partnership programme. LF was funded by the UK Natural Environment Research Council under NE/H003940/1. HB was funded by a Research Council UK Fellowship. PR is the recipient of an Australian Research Council Professorial Fellowship, (DP1096309). We are grateful for the assistance of A. Cogan (Univ. of Leicester) for the simulation of the GOSAT spectra.