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net.simplace.client.simulation.lap.ReSowManagement

Determines sowing or re-sowing date as function of precipitation. - Sowing can occur only during a sowing period which starts when the input variable iStartSowingPhase becomes true and lasts cSowingWindowDays - Sowing is triggered, when the sum of iPrecipitation of the last cPrecipitationDays is bigger than cMinimumPrecipitationSum - if during the cDroughtCrititalPeriod (in days) there are more than cMaximumDroughtDays where iPrecipitation is below cPrecipitationThreshold, then a re-sowing is required - for the re-sowing hold the same rules as for sowing: precipitation sum of previous days must be high enough and the actual day is still in the sowing period - when iDoReset is true, all states are reset - most important output is DoSow, which is true when (re)sowing should be done it is required as an input by some other modules (phenology, biomass production, roots etc.) - NeedsReSowing is true, when there was too much drought after sowing, but the conditions for re-sowing are not fullfilled yet. - other output have a more informative character

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cDroughtCriticalPeriod	Time span in days after sowing drought days are considered for possible resowing	INT	d	-	-	30
constant	cMaximumDroughtDays	If number of drought days is bigger than MaximumDroughtDays, then resowing is required.	INT	d	-	-	7
constant	cMinimumPrecipitationSum	Minimum amount of precipitation that has been acumulated during last cPrecipitationDays	DOUBLE	mm	-	-	30.0
constant	cPrecipitationDays	Number of days where precipitation is acumulated to decide about sowing	INT	d	-	-	5
constant	cPrecipitationThreshold	If daily precipitation is below this threshold, the day is counted as a drought day	DOUBLE	mm	0.0	1.0	0.1
constant	cSowingWindowDays	Time span in days after start where (re)sowing is possible	INT	d	-	-	60
input	iDoReset	Boolean that triggers resetting of all counts (except TotalDays) and states	BOOLEAN	1	-	-	false
input	iPrecipitation	Daily precipitation	DOUBLE	mm	-	-	0.0
input	iStartSowingPhase	Boolean that triggers the start of sowing period.	BOOLEAN	1	-	-	false
input	iTRANRF	Daily stress factor due to transpiration reduction	DOUBLE	1	-	-	1.0
DaysSinceSowing	Days since last DoSow was triggered	INT	d	null
DaysSinceStart	Days since start of sowing period phase	INT	d	null
DoSow	Is set to true, when sowing is required and possible.	BOOLEAN	1	null
DroughtDays	Number of days where TRANRF is below the threshold	INT	d	null
HasSown	Is true, when sowing has been triggered.	BOOLEAN	1	null
HasStarted	Is set to true, when start of sowing period is triggered.	BOOLEAN	1	null
NeedsReSowing	Is true, when number of drought days exceeds the maximum and simulation is still in the sowing window.	BOOLEAN	1	null
PreviousDaysPrecipitation	Array that holds the precipitation of the last Precipitation days. Values are cyclically updated.	DOUBLEARRAY	mm	null
PreviousDaysPrecipitationSum	Sum of the previous days precipitation	DOUBLE	mm	null
SowingAttempts	Number of sowing attempts	INT	1	null
SowingDOY	DOY when DoSow occurs	INT	1	null
TotalDays	Counts total running days. Used to cyclically populate PreviousDaysPrecipitation with the last precipitation values.	INT	d	null

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

// 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 reset();

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) - ReSowManagement