A Global Bias-corrected XCO2 Dataset Based on GOSAT-2 Satellite Observations (2019-2025)

The time range is from March 1, 2019 to September 30, 2025, and the spatial scope covers the whole world. The spatial resolution is consistent with the original observation footprint of GOSAT-2, which is a circular footprint with a diameter of approximately 9.7 km. Due to factors such as satellite orbit coverage, cloud and aerosol influence, and quality control screening, data may not have valid observation records on some dates or regions.

The main sources of data errors are satellite raw inversion errors and errors introduced by bias correction. Based on TCCON verification, the RMSE of land and marine areas after correction are approximately 1.94 ppm and 1.95 ppm, respectively. The data is stored in daily NetCDF files, totaling 2312 files, with file naming format GCC-GOSAT2/yyyymmdd.nc. Each data file is recorded based on a single satellite observation footprint, with the main variables including latitude、longitude、time、xco2_original、xco2_bias_corrected、correction_value、xco2_error_original、xco2_bias_corrected_error、land_fraction、surface_type And correctivion_category, etc.