Water debt for the annual production of nine major crops globally at 5 arcmin resolution for the year 2000
bibliographic citation: Tuninetti, M., Tamea, S., Dalin, C. (2023). Water debt for the annual production of nine major crops globally at 5 arcmin resolution for the year 2000. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/45cb218c-b050-4ee8-8c87-73d3895a111f
description: Gridded data of water debt for year 2000. The water debt expresses the number of years required by the hydrological cycle to replenish the water source (soil moisture, surface water, ground water) that have been used to accomplish the annual production of nine major crops. The considered crops are: wheat, maize, rice, soybean, sugar cane, sugar beet, cotton, barley, sorghum.
provenance: ProvenanceStatement
  label: Definition of the Water Debt (WD) Repayment Time: The WD is calculated, at a 5' × 5' spatial resolution for the production of year 2000, as the ratio of the cell annual water footprint, WFs, cr, l, which is specific for each source s, crop cr, and location l, and the average renewable volume of water annually available in the cell. The annual renewability rate is calculated as a long-term average along the period 1987–2013. In this way, we obtain an average measure of the water availability in the cell, which smooths out potential extremely dry or extremely wet years. The water footprint (WF) estimates are computed for year 2000 because this is the most referenced year in agricultural datasets available in the literature. The WFs, cr, l estimate is obtained as the product of the local crop water footprint (CWF) by source, (CWFs, cr, l, expressed in cubic meters per ton of crop), and the annual crop production (Pr), (Pcr, l, expressed in tons of crop). The total WD of the sources, arising from all the crops cultivated in the grid cell, WDs, l, equals the sum of debts generated by each crop. Owing to the simultaneous replenishment of soil water, surface water, and groundwater by precipitation, the crop WD across the threes sources, WDcr, l, is given by the maximum WDs, l, cr value across sources s.
spatial: Location
  bbox: POLYGON((-180 -90, -180 90, 180 90, 180 -90, -180 -90))
temporal: PeriodOfTime
  start date: 2000-01-01
  end date: 2000-12-31
publisher: NERC EDS Environmental Information Data Centre
subject: Hydrology
subject: Mapping
subject: crop production
subject: agronomy
subject: hydrology
subject: water resources conservation
subject: environmental sustainability
type: Dataset
available: 2023-01-26
landing page: https://doi.org/10.5285/45cb218c-b050-4ee8-8c87-73d3895a111f
license: OGL-UK-3.0.ttl
access rights: UNRS
theme: Hydrology
theme: Mapping
distribution:
  access URL: https://data-package.ceh.ac.uk/data/45cb218c-b050-4ee8-8c87-73d3895a111f
  license: OGL-UK-3.0.ttl
  access rights: UNRS
  format: Plain text
creator: Tuninetti, M.
creator: Tamea, S.
creator: Dalin, C.
language: en

Dalin, C.
type: Person
family name: Dalin
given name: C.
member: University College London

NERC EDS Environmental Information Data Centre
type: Organization

Tuninetti, M.
type: Person
family name: Tuninetti
given name: M.
member: Politecnico di Torino

Tamea, S.
type: Person
family name: Tamea
given name: S.
member: Politecnico di Torino

Dalin, C.
type: Person
family name: Dalin
given name: C.
member: University College London

Hydrology
type: Concept

Mapping
type: Concept

crop production
type: Concept

agronomy
type: Concept

hydrology
type: Concept

water resources conservation
type: Concept

environmental sustainability
type: Concept

University College London
type: Organization

Politecnico di Torino
type: Organization