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Global map of monthly reference evapotranspiration - 30 arc minutes

ISO19115/19139 XML
Identification info
Data identification
Citation
Citation
Title  Global map of monthly reference evapotranspiration - 30 arc minutes
Date
Date
Date  2000
Date type  Creation: Date identifies when the resource was brought into existence
Edition  first
Presentation form  Digital map: Map represented in raster or vector form
Abstract  Grid with estimated reference evapotranspiration per month with a spatial resolution of 30 arc minutes. Data on reference evapotranspiration been prepared by IIASA for FAO for global agro-ecological assessment studies. The dataset contains mean monthly values for global land areas, excluding Antarctica, for the period 1961-1990. The dataset has been prepared according to the FAO Penman - Monteith method with limited climatic data as described in FAO Irrigation and Drainage Paper 56. The dataset consists of 12 ASCII-grids with mean monthly data in mm/day * 10, and one ASCII-grid with yearly data in mm/year.
Purpose  This dataset is especially useful to perform GIS-based water balance model calculations.
Status  Completed: Production of the data has been completed
Descriptive keywords  reference evapotranspiration , evaporation , transpiration , climate , meteorology (theme).
Descriptive keywords  World (place).
Spatial resolution
Resolution
Distance
Units of measure  ,
Language  English
Character set  UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646
Topic category
Topic category code  Climatology, meteorology, atmosphere
Extent
Extent
Temporal element
Temporal Extent
Extent
Begin date  1961
End date  1990
Extent
Extent
Geographic element
Geographic bounding box
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 1.0 Global Climate Dataset" prepared by the Climate Research Unit of the University of East Anglia, UK, distributed through the website: http://www.cru.uea.ac.uk/~timm/grid/CRU_CL_1_0.html).

This data-set was subsequently augmented by a similar data-set with the higher spatial resolution of ten arc minutes. (http://www.fao.org/geonetwork/srv/en/metadata.show?id=
7416&currTab=simple)

Distribution Information
Distribution
Transfer options
Digital transfer options
OnLine resource
OnLine resource  Online link to the 'Global Agro-ecological Assessment for Agriculture in the 21st Century' - website
OnLine resource
OnLine resource  Online link to the 'The CRU CL 1.0'- website
OnLine resource
OnLine resource  Crop evapotranspiration - Guidelines for computing crop water requirements
OnLine resource
OnLine resource  Global map of monthly reference evapotranspiration - 30 arc minutes
OnLine resource
OnLine resource  This dataset was superseeded by "Global map of monthly reference evapotranspiration - 10 arc minutes"
OnLine resource
Data for download  Global map of monthly reference evapotranspiration - 30 arc minutes - ASCII-grid
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (year) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_year_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (year) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (January) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_jan_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (January) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (February) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_feb_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (February) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (March) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_mar_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (March) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (April) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_apr_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (April) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (May) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_may_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (May) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (June) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_jun_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (June) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (July) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_jul_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (July) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (August) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_aug_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (August) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (September) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_sep_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (September) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (October) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_oct_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (October) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (November) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_nov_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (November) - 30 arc-min   View in Google Earth
OnLine resource
Interactive Map  Global map of montly reference evapotranspiration (December) - 30 arc-min
(OGC-WMS Server: http://data.fao.org/maps/wms?styles=geonetwork_etref_dec_5017_style )
View in Google Earth  Global map of montly reference evapotranspiration (December) - 30 arc-min   View in Google Earth
Spatial representation info
Grid spatial representation
Number of dimensions 

4

Axis Dimensions Properties
Dimension
Dimension name  Row: Ordinate (y) axis
Dimension size 

360

Resolution
Units of measure  ,
Axis Dimensions Properties
Dimension
Dimension name  Column: Abscissa (x) axis
Dimension size 

720

Resolution
Units of measure  ,
Axis Dimensions Properties
Dimension
Dimension name  Time: Duration
Dimension size 

12

Resolution
Units of measure  ,
Axis Dimensions Properties
Dimension
Dimension name  Vertical: Vertical (z) axis
Resolution
Units of measure  ,
Cell geometry  Area: Each cell represents an area
Transformation parameter availability 

yes

Metadata
File identifier  c2810630-88fd-11da-a88f-000d939bc5d8
Metadata language  English
Character set  UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646
Date stamp  2013-01-25T12:39:30
Metadata standard name  ISO 19115:2003/19139
Metadata standard version  1.0
Metadata maintenance
Maintenance information
Maintenance and update frequency  As needed: Data is updated as deemed necessary
Contact
Individual name  Jippe Hoogeveen
Organisation name  FAO-UN
Position name  Water Resources Officer
Role  Point of contact: Party who can be contacted for acquiring knowledge about or acquisition of the resource
Contact Information
Contact
Address
Address
Delivery point  Viale delle Terme di Caracalla
City  Rome
Postal code  00100
Country  Italy
Electronic mail address  jippe.hoogeveen@fao.org