[Keyword='soil property estimates']
ISRIC-WISE derived soil properties on a 5 by 5 arc-minutes global grid (ver. 1.2)Entry ID: ISRIC_WISE5by5min_ver1-1
Abstract: Version 1.2 describes a harmonized dataset of derived soil properties for the world. It was created using the soil distribution shown on the 1:5 million scale FAO-Unesco Soil Map of the World (DSMW) and soil property estimates derived from the ISRIC-WISE soil profile database, version 3.1.
The dataset considers 19 soil variables that are commonly required for agro-ecological zoning, land ... evaluation, crop growth simulation, modelling of soil gaseous emissions, and analyses of global environmental change. It presents ‘best’ estimates for: soil drainage class, organic carbon content, total nitrogen, C/N ratio, pH (H2O), CECsoil, CECclay, effective CEC, base saturation, aluminium saturation, calcium carbonate content, gypsum content, exchangeable sodium percentage (ESP), electrical conductivity, particle size distribution (i.e. content of sand, silt and clay), content of coarse fragments (< 2 mm), bulk density, and available water capacity (-33 to -1500 kPa). These estimates are presented by FAO soil unit for fixed depth intervals of 20 cm up to 100 cm depth (or less when appropriate) for so-called virtual profiles. The associated soil property values were derived from analyses of some 10,250 profiles held in WISE using a scheme of taxonomy-based taxotransfer rules complemented with expert-rules. The type of rules used to derive the various soil property values have been flagged in the database to provide an indication of the possible confidence in the derived data.
Most map units on the DSMW are complex, comprising up to eight different soil units. Assessments and model applications that use the derived soil properties therefore should consider the full map unit composition and depth range.
The soil property values presented here should be seen as best estimates based on the current selection of soil profiles in WISE, the procedure for clustering the measured data, taxotransfer scheme used for deriving soil, properties, and the spatial data of the digital Soil Map of the World.
The derived information may be used for exploratory assessments at a broad scale (< 1:5 million; 5 by 5 arcminutes and coarser), pending the global update of the information on world soil resources at more detailed scales, upon due consideration of the underlying generalisations and assumptions. Limitations for use are described in detail.
Purpose: The derived information may be used for exploratory assessments at a broad scale (< 1:5 million; 5 by 5 arcminutes and coarser), pending the global update of the information on world soil resources at more detailed scales, upon due consideration of the underlying generalisations and assumptions.
Data Set Citation
Dataset Originator/Creator: Angell, J.K.
Dataset Title: Northern Hemisphere temperature deviations derived from radiosonde records.
Dataset Release Date: 2009
Dataset Release Place: Oak Ridge National Laboratory
Dataset Publisher: In Trends Online: A Compendium of Data on Global Change.
Dataset DOI: doi: 10.3334/CDIAC/cli.005Online Resource: http://cdiac.ornl.gov/trends/temp/angell/angell.html
Start Date: 1958-01-01Stop Date: 2008-12-31
Use Constraints CITE AS: Angell, J.K. 2009. Global, hemispheric, and zonal temperature deviations derived from radiosonde records. In Trends Online: A Compendium of Data on Global Change. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee, U.S.A. doi: 10.3334/CDIAC/cli.005
Angell, J.K. 2009. Effect of exclusion of anomalous tropical stations on temperature trends from a 63-Station radiosonde network, and comparison with other analyses. Journal of Climate 16:2288-2295, doi: 10.1175/2763.1.
Angell, J.K. 1988. Variations and trends in tropospheric and stratospheric global temperatures, 1958-87. Journal of Climate 1:1296-1313.
Angell, J.K. 1991. Changes in tropospheric and stratospheric global temperatures, 1958-88. pp. 231-47. In M.E. Schlesinger (ed.), Greenhouse-Gas-Induced Climatic Change: A Critical Appraisal of Simulations and Observations. Elsevier Science Publishers, Amsterdam, Netherlands.
Angell, J.K., and J. Korshover. 1983. Global temperature variations in the troposphere and stratosphere, 1958-82. Monthly Weather Review 111:901-21.
Creation and Review Dates
DIF Creation Date: 2010-12-16
Last DIF Revision Date: 2010-12-30