Identification

Title

Water debt for the annual production of nine major crops globally at 5 arcmin resolution for the year 2000

Abstract

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. Full details about this dataset can be found at https://doi.org/10.5285/45cb218c-b050-4ee8-8c87-73d3895a111f

Resource type

dataset

Resource locator

https://data-package.ceh.ac.uk/data/45cb218c-b050-4ee8-8c87-73d3895a111f

name: Download the data

description: Download a copy of this data

function: download

https://data-package.ceh.ac.uk/sd/45cb218c-b050-4ee8-8c87-73d3895a111f.zip

name: Supporting information

description: Supporting information available to assist in re-use of this dataset

function: information

Unique resource identifier

code

https://catalogue.ceh.ac.uk/id/45cb218c-b050-4ee8-8c87-73d3895a111f

codeSpace

doi:

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

inlandWaters

farming

Keywords

Keyword set

keyword value

Hydrography

originating controlled vocabulary

title

GEMET - INSPIRE themes, version 1.0

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Hydrology

Agronomy

Crop production

Water resources sustainability

Geographic location

West bounding longitude

-180

East bounding longitude

180

North bounding latitude

South bounding latitude

-90

Temporal reference

Temporal extent

Begin position

2000-01-01

End position

2000-12-31

Dataset reference date

date type

publication

effective date

2023-01-26

Frequency of update

Quality and validity

Lineage

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.

Conformity

Conformity report

specification

title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

Environmental Information Data Centre

full postal address

Lancaster Environment Centre, Library Avenue, Bailrigg

Lancaster

LA1 4AP

email address

info@eidc.ac.uk

responsible party role

pointOfContact

Metadata date

2023-01-31T16:06:26

Metadata language

eng