Surface Groups Vietnam 1984-2021

Classified land cover (surface) of each pixel indicated as: 0 = built-up surfaces: surfaces with buildings of non-natural materials such as concrete, metal, and glass (e.g., residential buildings, industrial plants, roads) 1 = grassy surfaces: surfaces covered by grass or other plants with similar surface reflectance (e.g., natural grassland, city parks) 2 = surfaces with crop fields: surfaces with vegetation for agricultural purposes (e.g., hayfields, vineyards) 3 = forest-covered surfaces: surfaces covered by trees or other plants with similar surface reflectance (e.g., mixed forests, moors) 4 = surfaces without vegetation: surfaces with (almost) no vegetation or buildings (e.g., bare rock, sand plains) 5 = water surfaces: any type of water surface (e.g., rivers, lakes) 9 = missing surface classification, most likely due to cloud cover If a TIF file for a given year within the observation period is missing, no valid satellite imagery was available for that year (e.g., due to constant cloud cover).