Where croplands are in Australia and East Asia, 2015 (30 m)
What it measures. A detailed map of where farmland is across Australia, New Zealand, China, and Mongolia for 2015, at 30-meter resolution. Each pixel is marked as cropland, non-cropland, or water.
How it's made. Made by combining Landsat satellite imagery and running it through an automated classifier trained to recognize cropland.
How & where you'd use it. Provides baseline cropland data for agriculture, water-sustainability, and food-security research and for informing land-use policy.
What's measured
Coverage & cadence
- Time span2013-01-01 → 2016-12-31
- Measured byLANDSAT-8 (OLI) · LANDSAT-7 (ETM+) · DEM · LANDSAT-5 (TM)
- Processing levelLevel 3
- Spatial extent60, -62, 180, 60.095406
- FormatsGeoTIFF
- 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
The NASA Making Earth System Data Records for Use in Research Environments ([MEaSUREs](https://earthdata.nasa.gov/about/competitive-programs/measures)) Global Food Security-support Analysis Data (GFSAD) data product provides cropland extent data over Australia, New Zealand, China, and Mongolia for nominal year 2015 at 30 meter resolution (GFSAD30AUNZCNMOCE). The monitoring of global cropland extent is critical for policymaking and provides important baseline data that are used in many agricultural cropland studies pertaining to water sustainability and food security. The GFSAD30AUNZCNMOCE data product uses the pixel-based supervised classifier, Random Forest (RF), to retrieve cropland extent from a combination of Landsat 8 Operational Land Imager (OLI) and Landsat 7 Enhanced Thematic Mapper Plus (ETM+) data. Each GFSAD30AUNZCNMOCE GeoTIFF file contains a cropland extent layer that defines areas of cropland, non-cropland, and water bodies over a 10° by 10° area. Known Issues * Note overlapping tiles: The following tile also covers part of another tile in GFSAD30SEACE (Indonesia). Please ignore the Indonesian data in the following tile: GFSAD30AUNZCNMOCE_2015_S20E120_001_2017286154500.tif * Additional known issues, including constraints and limitations, are provided on page 22 of the ATBD.
Get the data
import earthaccess
earthaccess.login(strategy="netrc") # free Earthdata Login
results = earthaccess.search_data(
short_name="GFSAD30AUNZCNMOCE",
version="001",
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 LPCLOUD 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
- The technical information in the User's Guide enables users to interpret and use the data products. VIEW RELATED INFORMATION
- The ATBD provides physical theory and mathematical procedures for the calculations used to produce the data products. VIEW RELATED INFORMATION
- This documentation contains the software code used to generate the cropland extent data. VIEW RELATED INFORMATION