76f1bae3-cee1-4bc7-98b2-beb036d88d2b dataset Data infodesk ISRIC - World Soil Information info@isric.org 2023-12-08T11:18:44 ISO 19115:2003/19139 2003/Cor.1:2006 4326 EPSG WoSIS snapshot - July 2016 2016-07-20 76f1bae3-cee1-4bc7-98b2-beb036d88d2b 10.17027/isric-wdcsoils.20160003 doi: The aim of the World Soil Information Service (WoSIS) is to serve quality-assessed, geo-referenced soil data (point, polygon, and grid) to the international community upon their standardisation and harmonisation. So far, the focus has been on developing procedures for legacy point data with special attention to the selection of soil analytical and physical properties considered in the GlobalSoilMap specifications (e.g. organic carbon, soil pH, soil texture (sand, silt, and clay), coarse fragments ( greater than  2 mm), cation exchange capacity, electrical conductivity, bulk density, and water holding capacity). Profile data managed in WoSIS were contributed by a wide range of soil data providers; the data have been described, sampled, and analysed according to methods and standards in use in the originating countries. Hence, special attention was paid to measures for soil data quality and the standardisation of soil property definitions, soil property values, and soil analytical method descriptions. At the time of writing, the full WoSIS database contained some 118 400 unique shared soil profiles, of which some 96 000 are geo-referenced within defined limits. In total, this corresponds with over 31 million soil records, of which some 20 % have so far been quality-assessed and standardised using the sequential procedure discussed in this paper. The number of measured data for each property varies between profiles and with depth, generally depending on the purpose of the initial studies. Overall, the data lineage strongly determined which data could be standardised with acceptable confidence in accord with WoSIS procedures, corresponding to over 4 million records for 94 441 profiles. The downloadable ZIP file has the data in TSV (tab separated values). It contains the following files: - ReadmeFirst_WoSIS_2016.pdf (148.1 KB) - wosis_201607_attributes.txt (4.1 KB) - wosis_201607_layers.txt (679.1 MB) - wosis_201607_profiles.txt (8.8 MB) Citation: Batjes NH, Ribeiro E, van Oostrum A, Leenaars J, and Mendes de Jesus J 2016. Standardised soil profile data for the world (WoSIS, July 2016 snapshot), doi:10.17027/isric-wdcsoils.20160003. The dataset accompanies the following data paper: Batjes NH, Ribeiro E, van Oostrum A, Leenaars J, Hengl T, and Mendes de Jesus J 2017. WoSIS: Providing standardised soil profile data for the world, Earth System Science Data 9, 1-14, doi:10.5194/essd-9-1-2017. Ad van Oostrum ISRIC - World Soil Information Guest researcher PO Box 353 Wageningen 6700AJ Netherlands Niels Batjes ISRIC - World Soil Information Senior Soil Scientist PO Box 353 Wageningen 6700AJ Netherlands niels.batjes@isric.org Eloi Ribeiro ISRIC - World Soil Information Data infodesk ISRIC - World Soil Information data@isric.org https://files.isric.org/public/thumbnails/wosis_snapshot/wosis_snapshot.png bulk density cation exchange capacity soil classification coarse fragments clay effective cation exchange capacity electrical conductivity organic carbon pH sand silt calcium carbonate texture water retention soil profiles Soil science Stratum Global Region Licenced per profile, as specified by data provider and indicated in the data 100000 geoscientificInformation 1918-01-01 2013-02-12 -173.20 178.50 -78.50 80.00 Niels H. Batjes ISRIC - World Soil Information https://files.isric.org/public/wosis_snapshot/WoSIS_2016_July.zip WWW:DOWNLOAD-1.0-ftp--download Download zip https://doi.org/10.5194/essd-9-1-2017 WWW:LINK-1.0-http--related Scientific paper https://www.isric.org/explore/wosis/faq-wosis WWW:LINK-1.0-http--related Project webpage https://www.isric.org/explore/wosis/wosis-contributing-institutions-and-experts