On the accuracy of the CO2 surface fluxes to be estimated from the GOSAT observations

Details On the accuracy of the CO2 surface fluxes to be estimated from the GOSAT observations On the accuracy of the CO2 surface fluxes to be estimated from the GOSAT observations

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3619807c&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 19, CiteID L19807

Physics

Geophysics

14

Atmospheric Composition And Structure: Constituent Sources And Sinks, Biogeosciences: Carbon Cycling (4806), Global Change: Remote Sensing (1855), Mathematical Geophysics: Inverse Theory

Scientific paper

This paper quantifies the value added by the Greenhouse gases Observing SATellite (GOSAT) to numerical models of the global carbon cycle for the estimation of CO2 surface fluxes. The metric used here is the theoretical uncertainty reduction, defined as one minus the ratio of the posterior flux uncertainty to the prior ones. Our results indicate that GOSAT should significantly improve our knowledge of the CO2 surface fluxes over terrestrial vegetated areas, even at the scale of a week and of a few hundred kilometres. Over ocean and in spite of the GOSAT sun-glint-pointing capability, large improvements are seen only when the fluxes are aggregated both over ocean basins and over a year.

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