All data are global at a 1 degree resolution and are provided in ASCII format. The profile data are also offered in ESRI export file format. The primary data consist of depth and particle size (percent sand, silt, and clay) information for each major continent, soil type, and soil horizon. Ocean/continental coding (corresponding to FAO/UNESCO Soil Map of the World) (FAO/UNESCO, 1971-1981) and Zobler soil type classifications (Zobler, 1986) are also included. In addition to the primary data files, there are also four derived data sets available for download: (1) data on potential storage of water in the soil profile, (2) data on potential storage of water in the root zone, (3) data on potential storage of water derived from soil texture, and (4) a data set used to prescribe water-holding capacity in the GISS GCM (Model II).
Webb, R. W., C. E. Rosenzweig, and E. R. Levine. 2000. Global Soil Texture and Derived Water-Holding Capacities (Webb et al.). Data set. Available on-line [http://www.daac.ornl.gov] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/548.
Food and Agriculture Organization - United Nations Educational, Scientific, and Cultural Organization (FAO-UNESCO). 1971-1981. Soil Map of the World, 1:5,000,000, Volumes II-X. UNESCO, Paris, France.
Webb, R. S., C. E. Rosenzweig, and E. R. Levine. 1991. A Global Data Set of Soil Particle Size Properties, NASA Technical Memorandum 4286. NASA Goddard Institute for Space Studies, New York, New York, U.S.A.
Webb, R. S., C. E. Rosenzweig, and E. R. Levine. 1993. Specifying Land Surface Characteristics in General Circulation Models: Soil Profile Data Set and Derived Water Holding Capacities. Global Biogeochemical Cycles 7(1):97-108.
Zobler, L. 1986. A World Soil File for Global Climate Modelling. NASA Technical Memorandum # 87802. NASA Goddard Institute for Space Studies, New York, New York, U.S.A.