GHG (CO2, CH4, N2O) data from inverse models and UNFCCC national inventories This dataset contains 5 datasets, including GHG data from inverse models and UNFCCC national inventories in the top emitter countries: - CO2_inversion_1990-2019: annual CO2 flux from from 6 inversion models in three sectors: 'land flux (all land)' -> land flux from all land 'land flux (managed land)' -> land flux from managed land 'land flux (managed land + lateral adjustment)' -> land flux from managed land by adjusting the lateral flux - CH4_inversion_2000-2017: CH4 flux from from 10 in-situ inversion (2000-2017) and 11 satellite inversion (2010-2017) models from four sectors: 'anthropogenic (method x)' -> anthropogenic emissions from managed land. x could be 1, 2, 3.1 and 3.2, representing different methods to calculate the emissions in this sector: 'fossil' -> emissions from the fossil sector 'agriculture & waste' -> emissions from the agriculture and waste sector combined 'biomass burning' -> emissions from biomass burning - N2O_inversion_1997-2016: anthropogenic N2O emissions from from 3 models. - Inventory_1990-2019: inventory data collecting from UNFCCC national inventories. The classification of sectors is corresponding with the inversion data files for each gas specie. - Inventory_1990-2019_IPCC: inventory data collecting from UNFCCC national inventories in IPCC category.