A yearly gapless 1 km resolution XCO₂ dataset for China

This is the yearly gapless column-averaged CO2 dry air mole fractions (XCO2) dataset in China from 2012 to 2019. Due to the satellite revisit period and the limitation of sampling window, the continuous XCO2 data in space is mostly coarse. Long-term data with high spatial resolution (e.g., 1 × 1 km/ yearly) on CO2 concentration are always unavailable. We proposed a novel model from the perspective of spatial heterogeneity to reconstruct a fine-resolution (1 km ×1 km) XCO2 data in China from year of 2012 to 2019 based on the existing Global 1° land mapping XCO2.