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 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.
|File Size||~800 MB|
|Temporal Extent||2013-01-01 to 2016-12-31|
|Spatial Extent||Australia, New Zealand, China, Mongolia|
|Coordinate System||Geographic Latitude and Longitude|
|Datum||World Geodetic System (WGS84)|
|Geographic Dimensions||10° x 10°|
|Number of Science Dataset (SDS) Layers||1|
|Columns/Rows||37114 x 37253|
|Pixel Size||30 m|
|SDS Name||Description||Units||Data Type||Fill Value||No Data Value||Valid Range||Scale Factor||Additional Offset|
|Band 1||Cropland Extent for Australia, New Zealand, China, and Mongolia defined with three classes||N/A||8-bit unsigned integer||N/A||N/A||0 to 2||N/A||N/A|
|0||Water||Ocean and water bodies|
|2||Cropland||Cropland and cropland fallows|
Filename convention: GFSAD30AUNZCNMOCE_2015_GridTile_001_ProcessingDate(YYYYJJJHHMMSS).tif
Product Quality information can be found on page 19 of the Algorithm Theoretical Basis Document (ATBD).
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.