GFSAD30AUNZCNMOCE: Cropland Extent for Australia, New Zealand, China, Mongolia 2015 at 30m

NASA's Global Food Security-support Analysis Data (GFSAD) product provides cropland extent data for Australia, New Zealand, China, and Mongolia for the nominal year 2015. The data product was created using the Random Forest classifier on Landsat 8 OLI and Landsat 7 ETM+ imagery to define areas of cropland, non-cropland, and water bodies over 10° by 10° tiles. This dataset is part of the NASA MEaSUREs program and was last updated in March 2026.

Use Cases

• Mapping agricultural land use for policy-making based on the cropland extent layer.
• Establishing baseline data for water sustainability studies as mentioned in the description.
• Monitoring changes in cropland area over time using the 2015 nominal year as a reference.
• Validating other land cover classifications using the pixel-based supervised classifier methodology.

Strengths

• Data is produced by the National Aeronautics and Space Administration (NASA) under the MEaSUREs program.
• Provides 30-meter resolution cropland extent mapping for a nominal year (2015).
• Covers four specific countries/regions: Australia, New Zealand, China, and Mongolia.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Known issues exist, including overlapping tiles with another dataset, as noted in the description.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Cropland extent retrieved using the Random Forest (RF) classifier on Landsat 8 OLI and Landsat 7 ETM+ data.

Time Range

2015

Freshness

Last updated 2026-03-13 02:14:02.041393; freshness should be verified.

Geography

Australia, New Zealand, China, Mongolia