net.simplace.sim.components.models.lintul.TemperatureIncrement

Calculates effective temperature sums for anthesis and maturity based on daily temperature and base temperatures

Daily rates of temperature sums

The model takes daily mean temperature iAirTemperatureMean and the parameters cBaseTempBeforeAnt and cBaseTempAfterAnt and calculates the coresponding EffectiveTempRateBeforeAnt and EffectiveTempRateAfterAnt by subtracting the base temperatures from the mean temperatures.

\[ EffectiveTempRateBeforeAnt = max(0,iAirTemperatureMean - cBaseTempBeforeAnt) \\ EffectiveTempRateAfterAnt = max(0,iAirTemperatureMean - cBaseTempAfterAnt) \]

Rate reduction due to high mean temperatures

If the mean temperature iAirTemperatureMean exceeds cTempLimit, then the temperature sum rates are reduced linearly, becoming 0 when mean temperature reaches cTempUpperLimit:

\[ EffectiveTempRateBeforeAnt = \frac{cTempLimit-cBaseTempBeforeAnt}{cTempUpperLimit - cTempLimit}\cdot (cTempUpperLimit - iAirTemperatureMean) \\ EffectiveTempRateAfterAnt = \frac{cTempLimit-cBaseTempAfterAnt}{cTempUpperLimit - cTempLimit}\cdot (cTempUpperLimit - iAirTemperatureMean) \]

References

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cBaseTempAfterAnt	Base temperature after anthesis	DOUBLE	°C	0.0	40.0	9.0
constant	cBaseTempBeforeAnt	Base temperature before anthesis	DOUBLE	°C	0.0	40.0	1.0
constant	cTempLimit	threshold 1 for heat stress	DOUBLE	°C	0.0	60.0	12.6
constant	cTempUpperLimit	threshold 2 for heat stress	DOUBLE	°C	0.0	60.0	15.6
input	iAirTemperatureMean	Mean air temperature	DOUBLE	°C	-40.0	60.0	0.0
out	EffectiveTempRateAfterAnt	Daily temperature sum rate after anthesis	DOUBLE	°C	0.0	55.0	0.0
out	EffectiveTempRateBeforeAnt	Daily temperature sum rate before anthesis	DOUBLE	°C	0.0	55.0	0.0

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

// 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) - TemperatureIncrement