Start | Index | Overview • PREV | UP | NEXT Takes data with depth, clay percentage, silt percentage, sand percentage (optional, default 100-(clay+silt)), organic matter percentage (optional, default 0) bulk density (optional, default 1.4), top soil depth (optional, default 0.3 m), pedotransfer function (optional, default 'Hypres'), gravel percentage (optional, default 0) in n soil layers and transforms it to Van Genuchten parameters alpha, l, m, n and Ks or volumentric water contents.
Soil data is mostly delivered with the layer specific information. The layers have different depth and are varying in their count. This Transformer takes the texture data with these n different depth layers and creates Van Genuchten and Volumetric Water Content data.
Array fields like DOUBLEARRAY for the different parameters. Depending on the fields that you put into the header the different fields are calculated.
| Content Type | Name | Description | Data Type | Unit | Min Value | Max Value | Default Value |
|---|---|---|---|---|---|---|---|
| constant | cPedotransferFunction | Choose 'Hypres', 'Rawls', Default is 'Hypres' | CHAR | 1 | - | - | |
| constant | cSoilLayerDepth | Depth of the bottom of each soil layer after soil layer transformation | DOUBLEARRAY | m | - | - | - |
| constant | cTopSoilDepth | Depth of the topsoil layer - layers that are touched by topsoil are topsoil! | DOUBLE | m | 0.0 | 1.0 | 0.3 |
| input | iBulkDensity | Texture: Bulk density, default is 1.4 | DOUBLEARRAY | g/cm3 | 0.0 | 3.0 | - |
| input | iClayPercentage | Gravimetric texture part of clay, if not existing this is calculated from 100 - (sand + silt) | DOUBLEARRAY | % | 0.0 | 100.0 | - |
| input | iDoUpdate | If the calculation should be performed again (on tillage day or so) | BOOLEAN | % | - | - | true |
| input | iGravelPercentage | Volumetric texture part of gravel (additional to clay, silt, sand), default is 0 | DOUBLEARRAY | % | 0.0 | 100.0 | - |
| input | iOrganicPercentage | Gravimetric texture part of organic carbon, default is 0 | DOUBLEARRAY | % | 0.0 | 100.0 | - |
| input | iSandPercentage | Gravimetric texture part of sand, by default this is calculated from 100 - (clay + silt) | DOUBLEARRAY | % | 0.0 | 100.0 | - |
| input | iSiltPercentage | Gravimetric texture part of silt, if not existing this is calculated from 100 - (sand + clay) | DOUBLEARRAY | % | 0.0 | 100.0 | - |
| out | SaturatedHydraulicConductivity | Ks parameter | DOUBLEARRAY | m/s | - | - | - |
| out | TextureClass | TextureClass using the specific classification | CHARARRAY | m3/m3 | - | - | - |
| out | VanGenuchtenAlpha | VanGenuchten Alpha parameter | DOUBLEARRAY | m3/m3 | - | - | - |
| out | VanGenuchtenL | VanGenuchten L parameter | DOUBLEARRAY | m3/m3 | - | - | - |
| out | VanGenuchtenM | VanGenuchten M parameter (1-1/N) | DOUBLEARRAY | m3/m3 | - | - | - |
| out | VanGenuchtenN | VanGenuchten N parameter | DOUBLEARRAY | m3/m3 | - | - | - |
| out | VolumenticWaterContent0 | Volumetric soil water content of each layer at saturation (pF0 or 0.0 KPa) | DOUBLEARRAY | m3/m3 | 0.0 | 1.0 | - |
| out | VolumenticWaterContent1500 | Volumetric soil water content of each layer at permanent wilting point (pF4.2 or -1500 KPa) | DOUBLEARRAY | m3/m3 | 0.0 | 1.0 | - |
| out | VolumenticWaterContent200 | Volumetric soil water content of each layer at which water is available for upward movement (pF3.3 or -200 KPa) | DOUBLEARRAY | m3/m3 | 0.0 | 1.0 | - |
| out | VolumenticWaterContent3100 | Volumetric soil residual water content of each layer (pF6 or -3100 KPa) | DOUBLEARRAY | m3/m3 | 0.0 | 1.0 | - |
| out | VolumenticWaterContent33 | Volumetric soil water content of each layer at field capacity (pF2.5 or -33 KPa) | DOUBLEARRAY | m3/m3 | 0.0 | 1.0 | - |
| out | VolumenticWaterContent33Plus1500Half | Volumetric soil water content of each layer at field capacity + wilting point devided by 2 (pF2.5 or -33 KPa)/2 | DOUBLEARRAY | m3/m3 | 0.0 | 1.0 | - |
| out | VolumenticWaterContent33to1500 | Volumetric soil water content of each layer at field capacity - wilting point (pF2.5 or -33 KPa) | DOUBLEARRAY | m3/m3 | 0.0 | 1.0 | - |
| out | VolumenticWaterContent6 | Volumetric soil water content of each layer at field capacity (pF1.8 or -6 kPa) | DOUBLEARRAY | m3/m3 | 0.0 | 1.0 | - |
| out | VolumenticWaterContent6to1500 | Volumetric soil water content of each layer at field capacity - wilting point (pF1.8 or -6 KPa) | DOUBLEARRAY | m3/m3 | 0.0 | 1.0 | - |