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net.simplace.client.simulation.lap.fao56.evapotran.ReferenceETHargreaves

Calculates reference evapotranspiration ET0 by Hargreaves method using solar radiation and temperature Uses the Hargreaves 1975 formula for ET0 calculation from temperature and solar radiation ET0 = 0.135 (MeanTemperature + 17.8) * SolarRadiation

(Notice: Hargreaves & Sarmani 1985 ET0 = 0.0023*(MeanTemperature + 17.8)*Math.sqrt(MaxTemp - MinTemp)*ExtraterrestrialRadiation To calculate this formula, use SolarRadiationFromTemperature module together with ReferenceETHargreaves)

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
input	iSolarRadiation	solar radiation	DOUBLE	MJ/(m2 d)	-	-	0.0
input	iTMax	maximum daily temperature	DOUBLE	°C	-	-	0.0
input	iTMin	minimum daily temperature	DOUBLE	°C	-	-	0.0
ET0	reference evapotranspiration	DOUBLE	mm/d	null

public class ReferenceETHargreaves extends
net.simplace.simulation.model.FWSimComponent {
// Public Constructors
public ReferenceETHargreaves();

// Public Instance Methods

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

Create the FWSimVariables as interface for this SimComponent

// Protected Instance Methods

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

Initializes the fields by getting input and output FWSimVariables from VarMap

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

Process the algorithm and write the results back to VarMap

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

creates a clone from this SimComponent for use in other threads

}

Hierarchy: java.lang.Object - net.simplace.simulation.model.FWSimComponent (net.simplace.simulation.util.FWSimFieldContainer) - ReferenceETHargreaves