High resolution map of plant available water content for Senegal, derived from iSDA Africa 30m soil properties maps using USDA Rosetta3 model
<b>Purpose:</b><br> <br> The purpose of this dataset is to provide a high resolution map of available water content for Senegal and Gambia derived from 30m soil properties maps using the iSDA Africa dataset and the USDA Rosetta3 model. The map can be used to notably support spatialized crop simulation models to determine potential crop yields across West Africa.<br> <br> <b>Nature and extent of data:</b><br> <br> The dataset consists of a high resolution map of plant available water content derived from four soil property datasets from iSDA Africa. The soil properties include sand, clay, silt and fine-earth bulk density, and were predicted at a 30m resolution for 0-20 cm and 20-50cm depth intervals. The USDA Rosetta model was used to compute soil water retention properties from four iSDA layers (sand, clay, silt content, and fine-earth bulk density), including the van Genuchten parameters of residual water content, saturated water content, 'alpha' shape parameter, 'n' shape parameter, and saturated hydraulic conductivity. From these parameters, the volumetric water content at field capacity and permanent wilting point was computed using the van Genuchten-Mualem model. The output map has been filled with nearest neighbor interpolation where NaN values were present. Finally, available water content integrated over the soil profile down to 50cm and to the bedrock depth was calculated.<br> <br> <b>Location and coverage:</b><br> <br> The dataset covers the countries of Senegal and Gambia in West Africa at a 30m resolution.<br> <br> <b>Temporal scope:</b><br> <br> The dataset was created using soil property data and models from iSDA Africa and USDA Rosetta3, respectively, and covers the temporal scope of the original datasets. <br> <b>Archive formats / unzipping:</b><br> <br> Some of the archive files are separated in multiple parts, as indicated by their numeral file extensions (i.e. *.001, *.002, etc). To unzip these files, please consider using an unzipping software such as 7zip, that will manage file concatenation and unzipping given that all parts are stored under the same folder in your file system.<br> <br> <b>Changelog:</b><br> <br> <ul> <li>v1 : first submission</li> <li>v2 : maps have been clipped along the coastline to remove unwanted production artifacts</li> </ul>
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| Format: | Dataset biblioteca |
| Language: | English |
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CIRAD Dataverse
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| Subjects: | Agricultural Sciences, Earth and Environmental Sciences, soil properties, caractéristiques du sol, moisture content, soil water retention, teneur en eau, hydraulic conductivity, conductivité hydraulique, field capacity, capacité au champ, wilting point, point de flétrissement, spatial analysis, analyse spatiale, soil surveys, Enquête pédologique, West Africa, Afrique occidentale, Senegal, Sénégal, |
| Online Access: | https://doi.org/10.18167/DVN1/SGNSII |
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