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net.simplace.client.simulation.lap.lintul5.PotentialEvapoTranspiration

Lintul5 - Simple generic model for simulation of crop growth - Biomass and NPK part

Introduction

The sim components in the package lintul5 implement the Lintul5 algorithms from (L5). They are designed to reproduce same results (up to rounding errors) as the original FST program.

The original model is subdivided into multiple sim components (which should be used in the following order to be as close as possible to the original algorithm).

Irradiation
PotentialEvapoTranspiration
WaterBalance
Phenology
RadiationUseEfficiency
Lintul5

Daylength calculation is performed by the transformer component AstronomicParametersTransformer

PotentialEvapoTranspiration component calculates the potential evaporation and transpiration

Description

The component calculates evapo-transpiration corresponding to the original model's PENMAN() routine.

It takes inputs from the components Irradiation and Lintul5 (fractional light interception FINT).

It's outputs are used by WaterBalance.

For documentation of the algorithms please consult the orginal documentation (L5)

Changes to original

Calculation of irradiation has been moved from PENMAN() routine to Irradiation sim component. This does not affect the result.

References

(L5) Joost Wolf, User guide for LINTUL5, Wageningen UR, Wageningen, 2012

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cALTI	altitude of the weather station,	DOUBLE	m	-	-	0.0
constant	cCFET	Correction factor transpiration rate	DOUBLE	1	-	-	1.0
constant	cCO	Atmospheric CO2 concentration	DOUBLE	ppm	0.0	2000.0	370.0
constant	cFPENMTB	table with correction factors for Penman evapo-transpiration rate as function of atmospheric CO2 concentration for C3 crops	DOUBLEARRAY	1	-	-	40.0 1.05 360.0 1.0 720.0 0.95 1000.0 0.92 2000.0 0.92
input	iATMTR	atmospheric transmission	DOUBLE	1	-	-	0.0
input	iAVRAD	Daily total irradiation	DOUBLE	J/(m2 d)	-	-	0.0
input	iFINT	fractional light interception	DOUBLE	1	-	-	0.0
input	iTMAX	maximal air temperature during day (output of routine WEATHR)	DOUBLE	°C	-	-	0.0
input	iTMIN	minimal air temperature during day (output of routine WEATHR)	DOUBLE	°C	-	-	0.0
input	iVAP	vapour pressure at 9:00 am (output of routine WEATHR)	DOUBLE	mbar	-	-	0.0
input	iWIND	average wind speed (output of routine WEATHR)	DOUBLE	m/s	-	-	0.0
out	E0	Potential evaporation of open water	DOUBLE	mm/d	-	-	0.0
out	ES0	Potential evaporation of soil	DOUBLE	mm/d	-	-	0.0
out	PotentialSoilEvaporation	Potential evaporation	DOUBLE	mm/d	-	-	0.0
out	PotentialTranspiration	Potential transpiration	DOUBLE	mm/d	-	-	0.0
out	ReferenceCropEvapotranspirationCo2Corrected	Potential evapotranspiration of crop (CO2 corr.)	DOUBLE	mm/d	-	-	0.0

See also: Irradiation, WaterBalance, Phenology, RadiationUseEfficiency, Lintul5, AstronomicParametersTransformer

public class PotentialEvapoTranspiration extends
net.simplace.simulation.model.FWSimComponent {
// Public Constructors
public PotentialEvapoTranspiration(String aName, HashMap aFieldMap, HashMap
aInputMap, Element aSimComponentElement, FWSimVarMap aVarMap, int
aOrderNumber);
public PotentialEvapoTranspiration();

// Public Instance Methods

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

// Protected Instance Methods

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

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

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) - PotentialEvapoTranspiration