Imaging · collection
Irrigation Water Withdrawls for the World Water Development II
Listed in NASA Earthdata CMR
Description
Gridded field of irrigation withdrawals for 1995 (in km3 per year) at 30 minute (lattitude by longitude) resolution (Vorosmarty et al., 2005). Country-level irrigation withdrawals per capita (World Resources Institute, earthtrends.wri.org/) were multiplied by country-level population to estimate irrigation withdrawals for each country. Country-level irrigation withdrawals were distributed over irrigated lands (aggregated from Doll and Siebert, 2000) prorated on estimated irrigation need.
Irrigation need was computed as the difference between potential evapotranspiration (PET, which represents the crop water requirements under optimal conditions) and actual evapotranspiration (AET). PET was estimated using the physically-based function of Shuttleworth and Wallace (1985), which is a modification of the standard Penman-Monteith PET equation. AET was estimated by the Water Balance Model (Vorosmarty et al., 1998).
Links
Get the data
- Access to irrigated water use data wwdrii.sr.unh.edu/download.html ↗
download · from NASA CMR
Documentation and papers
- Access to documentation wwdrii.sr.unh.edu/sourcematerial/Irrigated_withdrawals_metadata.html ↗
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214621715-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214621715-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Irrigation · Irrigation · Land Management · Not provided · Population Distribution · Potential Evapotranspiration
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214621715-SCIOPS | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/agriculture/agricultural-plant-science/irrigation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-water-vapor/water-vapor-processes/evapotranspiration/potential-evapotranspiration | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/human-dimensions/environmental-governance-management/land-management | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/human-dimensions/habitat-conversion-fragmentation/irrigation | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/human-dimensions/population/population-distribution | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |