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Using the NASA EOSDIS Common Metadata Repository

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  • Global Food Security-support Analysis Data (GFSAD) Cropland Extent 2015 Africa 30 m V001

    https://cmr.earthdata.nasa.gov/search/concepts/C1429296018-LPDAAC_ECS.xml
    Description:

    The NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) (https://earthdata.nasa.gov/community/community-data-system-programs/measures-projects) Global Food Security-support Analysis Data (GFSAD) data product provides cropland extent data over the continent of Africa for nominal year 2015 at 30 meter resolution (GFSAD30AFCE). 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 GFSAD30AFCE data product uses two pixel-based supervised classifiers, Random Forest (RF) and Support Vector Machine (SVM), and one object-oriented classifier, Recursive Hierarchical Image Segmentation (RHSEG). The classifiers retrieve cropland extent from a combination of Landsat 8 Operational Land Imager (OLI) and Sentinel-2 MultiSpectral Instrument (MSI) data and elevation derived from the Shuttle Radar Topography Mission (SRTM) Version 3 data products. Each GFSAD30AFCE GeoTIFF file contains a cropland extent layer that defines areas of cropland, non-cropland, and water bodies over a 10° by 10° area.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -37 -37 36.5 54.8

    LPDAAC_ECS Short Name: GFSAD30AFCE Version ID: 001 Unique ID: C1429296018-LPDAAC_ECS

  • Global Food Security-support Analysis Data (GFSAD) Cropland Extent-Product 2015 Validation 30 m V001

    https://cmr.earthdata.nasa.gov/search/concepts/C1432078714-LPDAAC_ECS.xml
    Description:

    The NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) (https://earthdata.nasa.gov/community/community-data-system-programs/measures-projects) Global Food Security-support Analysis Data (GFSAD) data product provides cropland extent data of the globe for nominal year 2015 at 30 meter resolution. 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 GFSAD30 Validation (GFSAD30VAL) data product provides a thorough and independent accuracy assessment and validation of the cropland extent products produced for each of the seven regions. The accuracy assessment and validation process utilizes a cluster of 3 by 3 pixels of 30 meter data to resample the product to 90 meter resolution. Each GFSAD30VAL shapefile contains information on sample locations, presence of cropland or no cropland, and the zones that were randomly selected for accuracy assessment across the globe.

    Links: Temporal Extent: Spatial Extent:
    Minimum Bounding Rectangle: -90 -180 90 180

    LPDAAC_ECS Short Name: GFSAD30VAL Version ID: 001 Unique ID: C1432078714-LPDAAC_ECS