02/14/2017 - The Global Croplands 30-meter Cropland Extent beta-version products are available to view on croplands.org.
02/09/2017 - The nineth workshop of the GFSAD30 was held on February 7-9. News & Meetings
Global Food Security-Support Analysis Data at 30 m (GFSAD30)
The GFSAD30 is a NASA funded project to provide high resolution global cropland data and their water use that contributes towards global food security in the twenty-first century. The GFSAD30 products are derived through multi-sensor remote sensing data (e.g., Landsat, MODIS, AVHRR), secondary data, and field-plot data and aims at documenting cropland dynamics from 1990 to 2017. Please see GFSAD30 abstract here.
Monitoring global croplands is imperative for ensuring sustainable water and food security to the people of the world in the Twenty-first Century. The currently available cropland products suffer from major limitations such as:
- Absence of precise spatial location of the cropped areas;
- Coarse resolution nature of the map products with significant uncertainties in areas, locations, and detail;
- Uncertainties in differentiating irrigated areas from rainfed areas;
- Absence of crop types and cropping intensities; and
- Absence of a dedicated web\data portal for the dissemination of cropland products.
Thereby, the overarching goal of GFSAD30 project is to produce consistent and unbiased estimates of global agricultural cropland products such as:
1) Cropland extent\area;
2) Crop types with focus on 8 crops that occupy 70% of the global cropland areas;
3) Irrigated versus rainfed;
4) Cropping intensities: single, double, triple, and continuous cropping;
5) Cropland change over space and time: 1990-2017.
Once the above products are established, other products such as the following can be derived using the above products and certain other inputs:
6) Crop productivity (productivity per unit of land; kg\m2)
7) Water productivity (crop per drop or productivity per unit of water; kg\m3).
For additional information and data, go to Croplands.org
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Acknowledgements: This web page was designed by Mr. Jeff Peters of U. S. Geological Survey (USGS), Menlo Park, CA. Some of the earlier support by the USGS Powell Center by Mr. Tim Kern, Ms. Megan Eberhardt Frank, Mr. Thomas W. Miller, Ms. Gail A. Montgomery, Ms. Laura Smyrl, and the FORT Web Apps Team\ScienceBase Team is much appreciated. The project is funded by NASA MEaSUREs (Making Earth System Data Records for Use in Research Environments), through ROSES solicitation, for a period of 5 years (June 1, 2013- May 31, 2018). This is gratefully acknowledged.