ISRIC-WISE -- Global data set of derived soil properties on a 0.5 by 0.5 degree grid (ver. 3.0)Entry ID: ISRIC_WISE30by30min_v3
Abstract: This harmonized, gridded global data set of soil parameter estimates includes files listing: (1) soil parameter estimates for the component soil units of each terrestrial grid cell, in un-binned format, and (2) soil parameter estimates aggregated or binned into a number of predefined classes.
The spatial data, with a resolution of ½ by ½ degree, was derived from the ISRIC-WISE soil database. The ... land surface between longitudes -180o W and +180o E and latitudes +90o N and -90o S has been characterized using 45948 unique map units; each of these can comprise from one to ten soil units, characterized according to the original legend of the 1:5 million scale Soil Map of the World (FAO-Unesco 1974).
Soil parameter estimates for each of these units were derived from analyses of some 9600 profiles held in a working copy of WISE (ver. 2.0). Twenty-two soil variables, identified as being useful for agro-ecological zoning, land evaluation, crop growth simulation, modelling of soil gaseous emissions and analyses of global environmental change, were considered.
Parameter estimates for the topsoil (0-30 cm) and the subsoil (30-100 cm) are presented for the following variables: content of organic carbon, total nitrogen, the C/N ratio, pH(H2O), CECsoil, CECclay, base saturation, total exchangeable bases, aluminum saturation, exchangeable sodium percentage (ESP), electrical conductivity of saturated paste (ECe), calcium carbonate content, gypsum content, content of sand, silt and clay, content of fragments > 2 mm, bulk density, total porosity. For soil drainage class, effective soil depth, and available water capacity (-10 to -1500 kPa), however, parameter estimates are presented on a profile basis.
The parameter estimates - median values - presented here should be seen as best estimates; possible types and sources of uncertainty are discussed in the report. The data are considered appropriate for exploratory studies at global scale (< 1:5 000 000).
Further details: http://www.isric.org/isric/webdocs/Docs/ISRIC_Report_2005_08.pdf
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Data Set Citation
Dataset Originator/Creator: Niels H. Batjes
Dataset Title: ISRIC-WISE -- Global data set of derived soil properties on a 0.5 by 0.5 degree grid (ver. 3.0)
Dataset Release Date: 2005-12-01
Dataset Release Place: Wageningen
Dataset Publisher: ISRIC - World Soil Information
Version: ver. 3.0
Data Presentation Form: ArcView 3.3 and MSAccess tables (zipped)
Other Citation Details: http://www.isric.org/isric/Webdocs/Docs/ISRIC_Report_2005_08.pdfOnline Resource: http://www.isric.nl/isric/CheckRegistration.aspx?dataset=28
Start Date: 2002-07-04
Latitude Resolution: 500 m
Longitude Resolution: 500 m
Horizontal Resolution Range: 500 meters - < 1 km
Quality For more information on potential sensor-related anomalies, consult the following URL: http://landweb.nascom.nasa.gov/cgi-bin/QA_WWW/newPage.cgi?fileName=...
Access Constraints None
Use Constraints None
Data Set Progress
Distribution Media: HTTP
Distribution Size: ~30 MB
Distribution Format: HDF-EOS
Moderate Resolution Imaging Spectroradiometer (MODIS) publications written by the MODIS Science Team: [available online at http://modis.gsfc.nasa.gov/sci_team/pubs/]
National Aeronautics and Space Administration, 2000, MODIS data products catalog (EOS AM platform): [Greenbelt, Maryland], Goddard Space Flight Center, http://modis.gsfc.nasa.gov/data/dataprod/index.php.
National Aeronautics and Space Administration, 2000, EOS Reference Handbook, a Guide to NASA's Earth Science Enterprise and the Earth Observing System: Greenbelt, Maryland, Goddard Space Flight Center, 256 p. [available online in pdf format at http://eospso.gsfc.nasa.gov/ftp_docs/data_products_vol2.pdf].
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2007-04-11
Last DIF Revision Date: 2013-01-31