Map of aridity (Global - ~19km)

Grid of estimated aridity with a spatial resolution of 10 arc minutes. This dataset represents average yearly precipitation divided by average yearly potential evapotranspiration, an aridity index defined by the United Nations Environmental Programme (UNEP).


The classification of the aridity index is:

- Classification Aridity Index Global land area

- Hyperarid AI < 0.05 - 7.5% of the global land area

- Arid 0.05 < AI < 0.20 - 12.1% of the global land area

- Semi-arid 0.20 < AI < 0.50 - 17.7% of the global land area

- Dry subhumid 0.50 < AI < 0.65 - 9.9% of the global land area

Simple

Date (Creation)
2009-01-30T11:27:00
Edition

V.1
Presentation form
Digital map
Purpose

The aridity index dataset is useful to locate areas that suffer from a lack of available water. Lower values on the aridity index may adversely affect agricultural production and livestock health due to the dryness of the climate.
Status
Completed
Theme

  • precipitation

  • rainfall

  • aridity

  • climate

  • meteorology

  • available water

  • AQUAMAPS_climate

  • Tag_AQUASTAT
Place

  • World
Access constraints
Copyright
Use constraints
License
Other constraints

Creative Commons Attribution-NonCommercial-ShareAlike 3.0 IGO (CC BY-NC- SA 3.0 IGO)
Spatial representation type
Grid
Distance
10  arc/minutes
Metadata language

eng
Character set
UTF8
Topic category
  • Climatology, meteorology, atmosphere
Begin date
1961-01-01
End date
1990-12-01
N
S
E
W
thumbnail


Reference system identifier
EPSG:4326 - WGS84
Number of dimensions
4
Dimension name
Row
Dimension size
1080
Resolution
10  arc/minutes
Dimension name
Column
Dimension size
2160
Resolution
10  arc/minutes
Dimension name
Time
Dimension size
12
Resolution
1  month
Dimension name
Vertical
Dimension size
10
Resolution
1  mm/day
Cell geometry
Area
Transformation parameter availability
No
Distribution format
  • GeoTIFF ( 1.0 )

OnLine resource
Online link to the 'The CRU CL 2.0'- website ( WWW:LINK-1.0-http--link )
OnLine resource
Download . Global map of aridity (ESRI GRID) ( WWW:DOWNLOAD-1.0-http--download )
OnLine resource
aridity_37040 ( OGC:WMS-1.1.1-http-get-map )

Global map of aridity - 10 arc minutes

Hierarchy level
Dataset
Statement

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 ).

File identifier
221072ae-2090-48a1-be6f-5a88f061431a XML
Metadata language

eng
Character set
UTF8
Date stamp
2021-12-23T09:12:31
Metadata standard name

ISO 19115:2003/19139
Metadata standard version

1.0
Point of contact
  FAO-UN Land and Water Division - AQUASTAT ( )
Viale delle Terme di Caracalla , Rome , 00100 , Italy
 
 

Overviews

overview
Thumbnail: Map of aridity (Global - 10 arc minutes)

Spatial extent

N
S
E
W
thumbnail


Keywords

AQUAMAPS_climate Tag_AQUASTAT aridity available water climate meteorology precipitation rainfall

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