Dataset associated with the manuscript 'Towards improving top-down national CO2 estimation in Europe: Potential from expanding the ICOS atmospheric network in Italy'.

Dataset associated with the manuscript 'Towards Improving Top-Down National CO₂ Estimation in Europe: Potential from Expanding the ICOS Atmospheric Network in Italy.' It includes statistical metrics (uncertainty reduction, bias reduction, R, RMSE) from a series of Observing System Simulation Experiments (OSSEs) performed using the LUMIA inversion system. Based on these metrics, we assessed the potential expansion of Italy’s ICOS atmospheric network.