Scatter plots of NBCD_NCE biomass product versus CMS_RF biomass product (30 m) at state-level. a All; b forest; and c non-forest. The x axis in each plot represents biomass values from CMS_RF, and the y axis represents the biomass values from NBCD_NCE product. N is the number of pixel used in calculation of RMSD. Black dashed line is the fitted regression lines, gray solid line is the 1:1 line, and light blue to dark red colors represent point kernal density. Forest and non-forest categories are derived from NLCD2006 dataset at 30 m spatial resolution.