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Global map of yearly actual evapotranspiration - 5 arc minutes

Identification info

Title

Date

2009-07-21T15:26:00

Date type

Publication: Date identifies when the resource was issued

Presentation form

Digital map: Map represented in raster or vector form

Abstract

Grid with estimated actual evapotranspiration per year with a spatial resolution of 5 arc minutes. The dataset contains yearly values for global land areas, excluding Antarctica, for the period 1961-1990. The dataset has been prepared using a simple, one- dimensional soil-water balance method. The dataset consists of one ASCII-grid with yearly data in mm/year.

Status

On going: Data is continually being updated

Point of contact

Individual name	Jippe Hoogeveen
Organisation name	FAO
Position name	Water resources officer
Role	Originator: Party who created the resource

Maintenance and update frequency

As needed: Data is updated as deemed necessary

Descriptive keywords

(theme).

Descriptive keywords

World (place).

Access constraints

Copyright: Exclusive right to the publication, production, or sale of the rights to a literary, dramatic, musical, or artistic work, or to the use of a commercial print or label, granted by law for a specified period of time to an author, composer, artist, distributor

Spatial representation type

Grid: Grid data is used to represent geographic data

Language

English

Character set

UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646

Topic category code

Climatology, meteorology, atmosphere

Extent

Geographic bounding box

WGS 84

	North bound
West bound	Polygon((-180 -90,180 -90,180 90,-180 90,-180 -90))	East bound
	South bound

Supplemental Information

The input data used to calculate this dataset are part of the "CRU CL 2.0 Global Climate Dataset" prepared by the Climate Research Unit of the University of East Anglia, UK, and distributed through the website: http://www.cru.uea.ac.uk/~timm/grid/CRU_CL_2_0.html).

Evapotranspiration over irrigated areas is calculated by using the "Global Map of Irrigation Areas". Available at: http://www.fao.org/nr/water/aquastat/irrigationmap/inde
x.stm

Evaporation over open water bodies and wetlands is calculated by using a information derived from the "Global Land Cover 2000 (GLC-2000)" dataset. Available at: http://ies.jrc.ec.europa.eu/global-land-cover-2000

Distribution Information

Transfer options

Data for download	Global map of yearly actual evapotranspiration

Spatial representation info

Number of dimensions

Dimension name

Row: Ordinate (y) axis

Dimension size

2160

Resolution

Units of measure	,

Dimension name

Column: Abscissa (x) axis

Dimension size

4320

Resolution

Units of measure	,

Dimension name

Vertical: Vertical (z) axis

Dimension size

Resolution

Units of measure	,

Cell geometry

Area: Each cell represents an area

Transformation parameter availability

available

Reference System Information

Code	WGS 1984

Data quality info

Hierarchy level	Dataset: Information applies to the dataset

Metadata

File identifier

750d56ca-f92a-405e-8bbc-302221d55917

Metadata language

English

Character set

UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646

Date stamp

2009-07-31T00:17:32

Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0

Contact

Individual name	Jippe Hoogeveen
Organisation name	FAO
Position name	Water Resources Officer
Role	Point of contact: Party who can be contacted for acquiring knowledge about or acquisition of the resource

Electronic mail address	GIS-Manager@fao.org