Description
The NASA Making Earth System Data Records for Use in Research Environments (MEaSUREs) Global Food Security Support Analysis Data (GFSAD) Crop Dominance Global 1 kilometer (km) dataset was created using multiple input data including: Advanced Very High Resolution Radiometer (AVHRR), Satellite Probatoire d'Observation de la Terre (SPOT) vegetation, and Moderate Resolution Imaging Spectrometer (MODIS) remote sensing data; crop type data, secondary elevation data; 50-year precipitation and 20-year temperature data; reference sub-meter to 5 meter resolution ground data; and country statistic data.
The GFSAD1KCD data were produced for nominal 2010 by overlaying the five dominant crops of the world produced by Ramankutty et al. (2008), Monfreda et al. (2008), and Portman et al. (2009) over the remote sensing derived global irrigated and rainfed cropland area map of the International Water Management Institute (IWMI; Thenkabail et al., 2009a, 2009b, 2011, Biradar et al., 2009) to ultimately create eight classes of crop dominance. The GFSAD1KCD nominal 2010 product is based on data ranging from years 2007 through 2012.
Known Issues
- See Section 3.0 of the GFSAD 1 km User Guide.
Citation
Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with theEOSDIS Data Use and Citation Guidance.
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File Naming Convention
File name begins with Product Short Name (GFSAD1KCD) followed by the Year of Acquisition (2010), Version (001), Julian Date and Time of Processing as YYYYDDDHHMMSS (2016348142525), and the Data Format (tif).
Documents
USER'S GUIDE
ALGORITHM THEORETICAL BASIS DOCUMENT (ATBD)
Publications Citing This Dataset
Variables
The table below lists the variables contained within a single granule for thisdataset. Variables often contain observed or derived geophysical measurementscollected from a variety of sources, including remote sensing instruments onsatellite and airborne platforms, field campaigns, in situ measurements, andmodel outputs. The terms variable, parameter, scientific data set, layer, and bandhave been used across NASA’s Earth science disciplines; however, variable is thedesignated nomenclature in NASA’s Common Metadata Repository (CMR).Variable metadata attributes such as Name, Description, Units, Data Type, FillValue, Valid Range, and Scale Factor allow users to efficiently process and analyzethe data. The full range of attributes may not be applicable to all variables.Additional information on variable attributes is typically available in the data,user guide, and/or other product documentation.
For questions on a specific variable, please use theEarthdata Forum.
| Name Sort descending | Description | Units | Data Type | Fill Value | Valid Range | Scale Factor |
|---|---|---|---|---|---|---|
| Crop Dominance | Crop dominance class | N/A | uint8 | 0 | 1 to 9 | N/A |