net.simplace.sim.components.experimental.runoff.RunoffCurveNumber_SW

Calculates runoff according to the SCS Runoff Curve Number method, - with optional slope correction to the SWAT2009 model, - with the retention parameter varying - either with soil profile water content according to the SWAT2009 model, - or with depth-weighted soil profile water content according to the EPIC model, - and with optional retention parameter adjustment in case of frozen soil. Note: this component can deal with variable layer thicknesses. Note 2: The frozen soil correction starts if the 2nd soil layer is below 0°C. If layers are thick this may be too deep. This might need further development: take layer 1, or the average of the first 2 layers etc. References: Cronshey, R., 1986. Urban hydrology for small watersheds (No. TR-55). US Dept. of Agriculture, Soil Conservation Service, Engineering Division. Neitsch, S.L., Arnold, J.G., Kiniry, J.R., Williams, J.R., 2011. Soil & Water Assessment Tool, Theoretical Documentation, Version 2009 (No. TR-406). Sharpley, A.N., Williams, J.R., 1990. EPIC - Erosion/Productivity Impact Calculator (U.S. Department of Agriculture Technical Bulletin No. 1768).

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cSlope	Slope (leave out to disable slope correction)	DOUBLE	%	0.0	100.0	-
constant	cSoilLayerDepth	Depth of the bottom of each soil layer after soil layer transformation	DOUBLEARRAY	m	-	-	-
constant	cSoilWaterFieldCapacity	Volumetric soil water content of each layer at field capacity	DOUBLEARRAY	m3/m3	-	-	-
constant	cSoilWaterSaturation	Volumetric soil water content of each layer at saturation (pF0 or 0.0 KPa)	DOUBLEARRAY	m3/m3	-	-	-
constant	cSoilWaterWiltingPoint	Volumetric soil water content of each layer at permanent wilting point	DOUBLEARRAY	m3/m3	-	-	-
constant	cWeighted	Use depth weighted soil soil water.	BOOLEAN	1	-	-	false
input	iCN2	Curve Number for average moisture	DOUBLE	1	30.0	100.0	-
input	iRain	Rainfall	DOUBLE	milimetre	0.0	1000.0	-
input	iSoilTemperature	Soil temperature per layer for adjusting runoff for frozen ground. Can be left blank.	DOUBLEARRAY	°C	-40.0	80.0	-
input	iTotalWaterContentPerLayer	Total water content in each soil layer (mm)	DOUBLEARRAY	mm	0.0	-	-
out	CN	Curve number after slope, soil moisture, and frozen soil adjustment	DOUBLE	1	0.0	100.0	-
out	RainAdj	Adjusted rain (i.e. minus runoff)	DOUBLE	milimetre	0.0	1000.0	-
out	Runoff	Runoff	DOUBLE	milimetre	0.0	10000.0	-
out	S	Retention parameter	DOUBLE	1	0.0	1000.0	-

public class RunoffCurveNumber_SW extends net.simplace.sim.model.FWSimComponent {
// Public Constructors
public RunoffCurveNumber_SW();

// Public Instance Methods

public HashMap createVariables(); // Defines
net.simplace.sim.model.FWSimComponent

Create the FWSimVariables as interface for this SimComponent

// Protected Instance Methods

protected void init(); // Defines net.simplace.sim.model.FWSimComponent

Initialises the fields by getting input and output FWSimVariables from VarMap

protected void process(); // Defines net.simplace.sim.model.FWSimComponent

Process the algorithm and write the results back to VarMap

protected FWSimComponent clone(FWSimVarMap aVarMap);
// Defines net.simplace.sim.model.FWSimComponent

Creates a clone from this SimComponent for use in other threads

}

Hierarchy: java.lang.Object - net.simplace.sim.model.FWSimComponent (net.simplace.sim.util.FWSimFieldContainer) - RunoffCurveNumber_SW