Asia's irrigation infrastructure is mapped at a 5-minute by 5-minute grid cell resolution, representing approximately 9.25 km x 9.25 km at the equator. The dataset shows the fraction of each cell equipped for irrigation around the year 1995. It was created by the CEOS_EXTRA organization by combining statistical administrative data with geographical point, polygon, and raster information.
Use Cases
- Model historical agricultural water demand by analyzing the irrigation fraction values across administrative units.
- Assess regional irrigation development patterns by studying the spatial distribution of equipped area fractions.
- Validate or calibrate hydrological models using the 1995 baseline data on irrigated land location and extent.
- Study correlations between irrigation infrastructure and other geospatial features like climate zones or soil types.
Strengths
- Spatial resolution is defined at a 5-minute by 5-minute grid cell level.
- Data synthesis combines statistical records with multiple geographical data formats (point, polygon, raster).
Limitations
- Data represents a single snapshot from around 1995 and is not current.
- The specific number of rows (grid cells) and total geographic area covered is unknown.
- Derivation method may introduce errors when combining disparate administrative and spatial sources.
Provenance
- Source
- CEOS_EXTRA via NASA Earthdata.
- Collection Method
- Derived by combining statistical data on irrigated area within administrative units with geographical information on location.
- Time Range
- circa 1995
- Freshness
- 1995-12-31
- Geography
- Asia