Chinese Riverine N2O Emissions Started to Decrease After Peaking in 2010s

This dataset provides monthly nitrous oxide (N2O) emission estimates for individual river reaches at the global scale, with each CSV file (named in YYYYMM format) containing the following data structure for all river reaches within the study domain: COMID (unique river reach identifier from NHDPlus/HydroSHEDS database), Pred_FN2O (predicted N2O areal emission flux in mg N m⁻² d⁻¹), Pred_FN2O_std (standard deviation of predicted flux representing model uncertainty in mg N m⁻² d⁻¹), SA (water surface area of the river reach in m²), Pred_FN2O_SA (N2O emission flux multiplied by surface area in mg N d⁻¹), EN2O_month (total monthly N2O emission calculated as Pred_FN2O_SA × days in mg N month⁻¹), and lat and lon represent the latitude and longitude of the river reach centroid, respectively.