GFSAD30NACE v001

Global Food Security-support Analysis Data (GFSAD) Cropland Extent 2010 North America 30 m


PI: Prasad S. Thenkabail

Description

The NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) Global Food Security-support Analysis Data (GFSAD) data product provides cropland extent data over North America for nominal year 2010 at 30 meter resolution (GFSAD30NACE). 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 GFSAD30NACE data product uses a combination of the pixel-based supervised classifier, Random Forest (RF), and the object-oriented classifier, Recursive Hierarchical Image Segmentation (RHSEG). The classifiers retrieve cropland extent from a combination of Landsat 5 Thematic Mapper (TM) and Landsat 7 Enhanced Thematic Mapper Plus (ETM+) data and elevation derived from the Shuttle Radar Topography Mission (SRTM) Version 3 data products. Each GFSAD30NACE GeoTIFF file contains a cropland extent layer that defines areas of cropland, non-cropland, and water bodies over a 10° by 10° area.

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Characteristics

Collection and Granule

Collection

Characteristic Description
CollectionMEaSUREs GFSAD
DOI10.5067/MEaSUREs/GFSAD/GFSAD30NACE.001
File Size~800 MB
Temporal ResolutionMulti-Year
Temporal Extent2008-01-01 to 2015-12-31
Spatial ExtentNorth America
Coordinate SystemGeographic Latitude and Longitude
DatumWorld Geodetic System (WGS84)
File FormatGeoTIFF
Geographic Dimensions10° x 10°

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers1
Columns/Rows37114 x 37253
Pixel Size30 m

Layers

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor
Band 1 Cropland Extent for North America defined with three classes N/A 8-bit unsigned integer N/A N/A 0 to 2 N/A

Cropland Extent Class Descriptions

Class Label Name Description
0 Water Water bodies
1 Non-Cropland Non-Cropland areas
2 Cropland Cropland areas

Filename convention: GFSAD30NACE_2010_GridTile_001_ProcessingDate(YYYYJJJHHMMSS).tif

Product Quality

Product Quality information can be found on page 29 of the Algorithm Theoretical Basis Document (ATBD).

Known Issues

Known issues including constraints and limitations are provided on page 39 of the ATBD.

Documentation

Using the Data

Tools

Citation

DOI: 10.5067/MEaSUREs/GFSAD/GFSAD30NACE.001

About the Image

Global Food Security-support Analysis Data (GFSAD) Cropland Extent data from the GFSAD30AUNZCNMOCE product over the Midwestern United States, 2010.

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