A Global Synthesis Inversion Analysis of Recent Variability in CO Fluxes Using GOSAT and In Situ Observations.

The precise contribution of the two major sinks for anthropogenic CO emissions, terrestrial vegetation and the ocean, and their location and year-to-year variability are not well understood. Top-down estimates of the spatiotemporal variations in emissions and uptake of CO are expected to benefit from the increasing measurement density brought by recent in situ and remote CO observations. We uniquely apply a batch Bayesian synthesis inversion at relatively high resolution to in situ surface observations and bias-corrected GOSAT satellite column CO retrievals to deduce the global distributions of natural CO fluxes during 2009-2010.