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net.simplace.sim.components.radiation.fao56.NetRadiationFromSolarRadiationHourly

Calculates net radiation from solar radiation, using (FAO 56) methods. Extraterrestrial radiation is also calculated.

For documentation of the formulas please check the orginal reference (FAO 56)

References

[http://www.fao.org/docrep/x0490e/x0490e00.htm (FAO 56): Allen, Crop evapotranspiration - Guidelines for computing crop water requirements - FAO Irrigation and drainage paper 56, 1998]

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cAltitude	elevation above sea level	DOUBLE	m	-	-	0.0
constant	cAngstromRegressionConstant	Angstrom equation regression constant	DOUBLE	1	-	-	0.25
constant	cAngstromRegressionSlope	Angstrom equation regression slope	DOUBLE	1	-	-	0.5
constant	cLatitude	latitude	DOUBLE	°	-90.0	90.0	0.0
constant	cLongitude	longitude	DOUBLE	°	-180.0	180.0	0.0
constant	cLongitudeTimezone	longitude of the center of the timezone	DOUBLE	°	-180.0	180.0	0.0
constant	cUseAngstromVariables	use measured Angstrom variables if true, else use default ones	BOOLEAN		-	-	false
input	iActualVapourPressure	actual vapour pressure	DOUBLEARRAY	kPa	-	-	null null null null null null null null null null null null null null null null null null null null null null null null
input	iSolarRadiation	solar or shortwave radiation	DOUBLEARRAY	megajoule_per_square_metre_hour	-	-	null null null null null null null null null null null null null null null null null null null null null null null null
input	iT	hourly temperature	DOUBLEARRAY	°C	-	-	null null null null null null null null null null null null null null null null null null null null null null null null
out	ExtraterrestrialRadiation	extraterrestrial radiation	DOUBLEARRAY	megajoule_per_square_metre_hour	-	-	null null null null null null null null null null null null null null null null null null null null null null null null
out	NetOutgoingLWRadiation	net outgoing longwaveRadiation	DOUBLEARRAY	megajoule_per_square_metre_hour	-	-	null null null null null null null null null null null null null null null null null null null null null null null null
out	NetRadiation	net radiation	DOUBLEARRAY	megajoule_per_square_metre_hour	-	-	null null null null null null null null null null null null null null null null null null null null null null null null
out	NetSolarRadiation	net solar or shortwave radiation	DOUBLEARRAY	megajoule_per_square_metre_hour	-	-	null null null null null null null null null null null null null null null null null null null null null null null null

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

// 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

Initializes 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) - NetRadiationFromSolarRadiationHourly