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net.simplace.client.simulation.lap.Co2InfluenceOnTranspiration

Reduces the ActualTranspiration due to increasing \(CO_2\)

\(CO_2\) calculation

The actual \(CO_2\) is calculated by a linear function

\[ \begin{equation} CO_2(Year) = Slope \cdot (Year-StartYear) + StartValue \label{co2} \end{equation} \]

Transpiration reduction

Transpiration is reduced by a factor that depends linear on the actual CO2 by:

\[ \begin{eqnarray} f(CO_2) & = & Transpiration\_m \cdot CO_2 + Transpiration\_b \label{fco2}\\ ReducedActualTranspiration & = & ActualTranspiration \cdot f(CO_2(year)) \label{redtrans} \end{eqnarray} \]

Remarks

If you want to switch of the Co2 effect (e.g. if you use want to use the same solution with projects to calculate with and without Co2 effect), then you can parameterize the component, so that the factor is always 1:

set cTranspiration_m to 0
set cTranspiration_b to 1

For clarity reasons however, it is recommended to use different solutions and to remove the simcomponent from the solution, if you don't want to calculate Co2 effect.

References

Calculations due to LintulFAST. Further reference needed!

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cSlope	Slope of the linear function calculating the \(CO_2\) amount \(\eqref{co2}\)	DOUBLE	ppm/a	0.0	20.0	3.5
constant	cStartValue	Start \(CO_2\) value of the linear function calculating the \(CO_2\) amount \(\eqref{co2}\)	DOUBLE	ppm	220.0	400.0	350.0
constant	cStartYear	Start year of the linear function calculating the \(CO_2\) amount \(\eqref{co2}\)	INT	a	1930	2020	1990
constant	cTranspiration_b	Intercept of the linear function calculating the reduction factor \(\eqref{fco2}\)	DOUBLE	1	0.0	20.0	1.1
constant	cTranspiration_m	Slope of the linear function calculating the reduction factor \(\eqref{fco2}\)	DOUBLE	reciprocal_parts_per_million	0.0	20.0	-3.0E-4
input	iActualTranspiration	(Unreduced) actual transpiration	DOUBLE	mm/d	0.0	20.0	-
out	ActualTranspiration	Reduced actual transpiration by \(CO_2\) \(\eqref{redtrans}\)	DOUBLE	mm/d	0.0	20.0	-

public class Co2InfluenceOnTranspiration extends
net.simplace.simulation.model.FWSimComponent {
// Public Constructors
public Co2InfluenceOnTranspiration();

// 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) - Co2InfluenceOnTranspiration