then I used Code 2 to convert unit from the orignal unit of ton C per hectare to the final one of Kg C per m2, meanwhile I summed all available data points at 250m in each 0.5x0.5 grid cell to obtain the data at 0.5x0.5 degree resolution
finally I used Code 3 to create the final file in netCDF format.
Temporal resolution:
yearly
General information:
This product was derived from National Biomass and Carbon Dataset for the year 2000 originally in a raster format at 250m.