(1) The spatial resolution is 30m.

(2) The class and color code can be found in the "CLCD_classificationsystem.xlsx".

(3) "*_albert.tif" are projected files via proj4 string "+proj=aea +lat_1=27 +lat_2=45 +lat_0=0 +lon_0=105 +x_0=0 +y_0=0 +datum=WGS84 +units=m +no_defs".

(1)Yang, Jie and Huang, Xin: The 30 m annual land cover dataset and its dynamics in China from 1990 to 2019, Earth Syst. Sci. Data, 13, 3907–3925, https://doi.org/10.5194/essd-13-3907-2021, 2021.