Yearly land use and city growth in three African nations
What it measures. Yearly maps of land use and urban land cover for Ethiopia, Nigeria, and South Africa from 2016 to 2020, including 30-meter land-use maps and finer 10-meter maps of city areas.
How it's made. Created with machine-learning (Random Forest) models trained on reference data, using Landsat imagery for the broad land-use maps and Sentinel-2 imagery for the detailed urban maps, plus climate, terrain, and other data.
How & where you'd use it. Useful for tracking how cities are growing and how land is being used across these countries, with reported accuracy of roughly 60-80%. Delivered as GeoTIFF files.
What's measured
Coverage & cadence
- Time span2016-01-01 → 2020-12-31
- Measured byLANDSAT (ETM+, OLI) · Sentinel-1A (SENTINEL-1 C-SAR) · Sentinel-2A (Sentinel-2 MSI)
- Processing levelLevel 4
- Spatial extent2.5725, -35.3369, 49.6875, 16.2061
- FormatsCOG
- StatusCOMPLETE
What you can do with it
- Track deforestation, fire scars and land-cover change
- Monitor crop and vegetation health (NDVI/EVI)
- Map how built-up vs. green an area is over time
Official description
This dataset provides a two-tier annual Land Use (LU) and Urban Land Cover (LC) product suite over three African countries, Ethiopia, Nigeria, and South Africa, across a 5-year period of 2016-2020. Remote sensing data sources were used to create 30-m resolution LU maps (Tier-1), which were then utilized to delineate urban boundaries for 10-m resolution LC classes (Tier-2). Random Forest machine learning classifier models were trained on reference data for each tier and country (but one model was trained across all years); models were validated using a separate reference data set for each tier and country. Tier-1 LU maps were based on the 30-m Landsat time series, and Tier-2 urban LC maps were based on the 10-m Sentinel-2 time series. Additional data sources included climate, topography, night-time light, and soils. The overall map accuracy was 65-80% for Tier-1 maps and 60-80% for Tier-2 maps, depending on the year and country. The data are provided in cloud optimized GeoTIFF (COG) format.
Get the data
import earthaccess
earthaccess.login(strategy="netrc") # free Earthdata Login
results = earthaccess.search_data(
short_name="LULC_Nigeria_Ethiopia_SAfrica_2367",
version="1",
bounding_box=(-122.5, 37.2, -121.8, 37.9), # your area (W,S,E,N)
temporal=("2024-01-01", "2024-12-31"), # your dates
)
files = earthaccess.open(results) # stream straight from ORNL_CLOUD Browsing CMR needs no login. Downloading or streaming bytes needs a free Earthdata Login + the earthaccess package. Official links
- Earthdata Search allows users to search, discover, visualize, refine, and access NASA Earth Observation data. GET DATA
- Collection Bundle URL GET DATA
- ORNL DAAC Data Set Documentation VIEW RELATED INFORMATION
- Annual Land Use and Urban Land Cover: Ethiopia, Nigeria, and South Africa, 2016-2020: LULC_Nigeria_Ethiopia_SAfrica.pdf VIEW RELATED INFORMATION