We present a 6-year inversion from 2010 to 2015 for the global and regional carbon fluxes using only the GOSAT XCO₂ retrievals. We find that the XCO₂ retrievals could significantly improve the modeling of atmospheric CO₂ concentrations and that the inferred interannual variations in the terrestrial carbon fluxes in most land regions have a better relationship with the changes in severe drought area or leaf area index, or are more consistent with the previous estimates about drought impact.