Comparison of regional carbon flux estimates from CO2 concentration measurements and remote sensing based footprint integration

Quantification of terrestrial CO 2 sources and sinks at regional scales (∼10 2 –10 6 km 2 ) is fundamental to improving our understanding of the terrestrial carbon cycle. Two independent methods to extract the gross primary productivity (GPP) from atmospheric CO 2 concentration measurements were explored and compared in this study. The methods are (1) planetary boundary layer (PBL) carbon budget analysis that allows the estimation of regional …