GFSAD30VAL v001

Global Food Security-support Analysis Data (GFSAD) Cropland Extent 2015 Validation 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 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.

Characteristics

Collection and Granule

Collection

Characteristic Description
CollectionMEaSUREs GFSAD
DOI10.5067/MEaSUREs/GFSAD/GFSAD30VAL.001
File Size~31 MB
Temporal ResolutionMulti-Year
Temporal Extent2008-01-01 to 2016-12-31
Spatial ExtentGlobal
Coordinate SystemGeographic Latitude and Longitude
DatumWorld Geodetic System (WGS84)
File FormatESRI Shapefile
Geographic DimensionsGlobal

Granule

Characteristic Description
Number of Science Dataset (SDS) Layers1
Columns/RowsN/A x N/A
Pixel SizeN/A

Layers

SDS Name Description Units Data Type Fill Value No Data Value Valid Range Scale Factor Additional Offset
SHP Shapefile Class N/A N/A N/A N/A N/A N/A

Data Layers Classification┬╣

Name Description
Non-Cropland Non-Cropland areas
Cropland Cropland areas

┬╣Additional attributes are listed on page 7 of the User Guide.

Product Quality

Product Quality information can be found on page 17 of the Algorithm Theoretical Basis Document (ATBD).

Known Issues

Known issues including constraints and limitations are provided on page 18 of the ATBD.

Documentation

Using the Data

Tools

Citation

DOI: 10.5067/MEaSUREs/GFSAD/GFSAD30VAL.001

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