Package net.simplace.sim.components.soil.slim

Class SlimWater

java.lang.Object

net.simplace.sim.model.FWSimComponent

net.simplace.sim.components.soil.slim.SlimWater

All Implemented Interfaces:

net.simplace.sim.util.FWSimFieldContainer

public class SlimWater
extends net.simplace.sim.model.FWSimComponent

SlimWater.java is a routine for transient simulations of soil water balance of a multiple layer soil profile

The SimComponent SlimWater estimates the daily change in soil water content in a variable number of soil layers based on the volumes of crop water uptake, soil evaporation, surface run-off and seepage below the root zone. Besides soil and weather input files, the SimComponent needs a separate input file (SlimProperties or SlimFile) where input parameters which are specific to the SimComponents SlimWater (and SlimRoots) are defined by the user.

CAUTION: It is important to note that the SimComponent does not consider canopy interception nor lateral subsurface run-off (interflow) in the water balance calculation. Soil water storage, surface run-off (WFAST), soil evporation (EVAPS), crop transpiration (EVAPC), water losses through mole drains (WDRAIN) and seepage (WSEEP) are calculated within the SimComponent, whereas potential soil evporation (POTES) and crop transpiration (PEVAPC) must be provided by other SimComponents (e.g. EvapTranDemand or CropEvapoTranspirationDualCoeff.java).

Definition of soil water fractions

The water present in each layer is subdivided in different fractions. The fractions are defined according to the soil water content at certain soil matrix potentials for each soil layer:

1. SAT(i): Water content (m3 m-3) of saturated soil (SAT(i) at 0 kPa)
2. DUL(i): Water content (m3 m-3) at field capacity or Drained Upper Limit (DUL(i) at 33 kPa=0.33 bar=pF2.5)
3. AML(i): Water content (m3 m-3) at an intermediate soil water potential between field capacity (DUL) and wilting point (RLL) (AML(i) at 200 kPa=2.0 bar=pF3.3)
4. RLL(i): Water content (m3 m-3) at wilting point (RLL(i) at 1500 kPa).
5. SW(i): Initial soil water content at the start of the simulation (m3 m-3)

In relation to these cardinal points, different soil water fractions are calculated for each soil layer depending on their layer thickness (THICKL in m) :

1. Mobile water (mm): WM=(SAT(I)-DUL(I))*THICKL*1000
2. Maximum retainable water (WRH in mm): WRH=(DUL(i)-RLL(I))*THICKL*1000
3. Actual amount of retained water at the start of simulation (WR in mm): WR=(SW(i)-RLL(I))*THICKL*1000; and WR=<WRH
4. Half of the water retained at Wilting Point (WHT15R in mm): WHT15R = 0.5*RLL(I)*THICKL*1000
5. Maximum amount of mobile water in the top soil layer which triggers run-off generation (WM1S in mm): WM11S=(SAT(1)-DUL(1))*THICKL*1000
6. Fraction of water which is not available to solute transport (WRS in mm): WRS is set to WHT15R i.e. half of the water retained at wilting point
7. Fraction of water which is not available for upward movement of water and solutes in the topsoil layers (WFR in mm): WFR = (DUL(I)-AML(I))*THICKL*1000 (as defined in AFRCWHEAT 1995,

not in Addiscott and Whitmore (1991))

8. Fraction of water in finer pores (between 2 bar (pF3.3) and 0.5*Wilting point) available for upward movement (WR33 in mm): WR33 = (AML(I)-0.5*RLL(I))*THICKL*1000

NOTE: Due to various changes in the definition of AML(i), WHT15R, and WRS the definitions of WFR and WR33 and the equations for upward movement of water and solutes within the top soil layers may need substantial revision

The daily actual amount of water in each of the fractions in each layer is calculated depending on the amount of water input into the soil (rainfall or irrigation) and the water losses due to surface run-off, drainage (see function "LeachingWater()" and "RedistributionWithinLayers()"), soil evaporation (see function CalculateEvaporation()) and crop transpiration (function Avail() and TakeUp()).

Canopy interception

Currently SlimWater does not account for crop canopy interception. However, when combining SlimWater with LintulDRUNIR.java or HillFlow1D.java, the interception can be obtained from these SimComponents.

Surface-runoff (WFAST)

Surface run-off (WFAST) is calculated as the excess of cumulative subdaily rainfall aliquots (WALIQ in mm) which exceed the water retention capacity of the first soil layer (WM1S). The parameter "CalcuationRunoffWater" is FALSE by default. Thus, in the SlimProperties file, the user must set "CalcuationRunoffWater" to TRUE in order to enable the calculation of WFAST. SlimWater breaks the daily amount of rainfall down into user-defined aliquots (WALIQ, default value: 3 mm). WALIQ is defined in the SlimProperties input file. Each aliquot is then added to the first soil layer and either added to the fraction of retained water (if WRH<WR) or to the mobile fraction (WM), until the infiltration capacity of the first layer (WM1S) is reached (WM1S=WM(1)). The excess water of each aliquot (WXTRA in mm) is then accumulated in a loop and constitutes the total daily surface run-off volume (WFAST in mm). NOTE: The amount of surface-runoff is highly sensitive to the ratio between the rainfall aliquot (WALIQ) and the thickness of the first soil layer (THICKL). In the original version of SLIM the default values for THICKL and WALIQ where 0.5 and 0.05m respectively. Thus a ratio of THICKL:WALIQ of 1:10 is recommended (Addiscott & Whitmore 1991).

Percolation or leaching of water

The water (aliquot) which infiltrates into the first soil layer is routed vertically to the layers below. The water transport from one layer to the other consists of a vertical movement (see function LeachingWater()) of half of the product of the mobile water times a user defined fraction (SlimAlfa) from the upper layer to the lower layer. After a horizontal redistribution within the lower layer (RedistributionWithinLayers()), a second leaching of the remaining excess water from the upper layer occurs. This procedure tries to mimic the gradual vertical flow of water through the whole soil profile within one day. SlimAlfa is a critical parameter and is related to the clay content of each layer. Addiscott& Whitmore (1991) recommend for mineral soil layers the following equations to estimate SlimAlfa:

\[ SlimAlfa = \begin{cases} 1.0 & \text{when } \%clay \le 9.5\\ 1.0271 - 0.000302 (\%clay)^2 &\text{when } 9.5 < \%clay < 58.3 \\ 0.0 & \text{when } \%clay \ge 58.3 \end{cases} \]

If the leached water reaches the last soil layer, the leachable fraction of the mobile water (WM*SlimAlfa) leaves the rootable zone and is thus added to the amount of daily seepage (WSEEP).

In addition, SlimWater considers the effect of mole drains on water losses through artifical drainage pipes (WDRAIN). In this case the user must specify the soil layer number (MD) where the drainage pipes are located in the SlimProperties file. Furthermore, the user must estimate in the SlimProperties file the fraction (DP in Decimal-%) of leaching water (WL) which is absorbed and evacuated by the mole drains in layer MD. If "CalculateRunoff" is switched off, then WXTRA is considered as preferential flow by-passing the main body of the soil. If this is the case, in addition to the fraction of the percolating water (DP of WL) the fraction DP of the preferential flow (fraction DP of WXTRA) is evacuated through the mole drains (WDRAIN). The remaining preferential flow in layer MD in each leaching loop (WXTRA*(1-DP)) is then added to the preferential flow.

If CalculateRunoffWater is FALSE:

\[ \begin{eqnarray} WDRAIN = WL(MD) \cdot DP + WXTRA \cdot DP \end{eqnarray} \]

If CalculateRunoffWater is TRUE:

\[ \begin{eqnarray} WDRAIN = WL(MD) \cdot DP \end{eqnarray} \]

Soil evaporation

Potential soil evaporation (POTES)

Originally the subroutine of SLIM to calculate potential soil evporation received the potential open pan evaporation (EVAPO) from the subroutine EVAPW.FOR. Then potential crop transpiration (EVAPC) was derived from EVAPO by considering daily LAI of the crop and the light extinction coefficient. Finally, potential soil evaporation (POTES) was calculated as

\[ \begin{eqnarray} POTES = (EVAPO - EVAPC) \cdot 0.9 \cdot (1.0 - \frac {ECUM}{WRHTopsoil}) \end{eqnarray} \]

(This equation should probably be revised for cases when EVAP is not open pan evaporation) where WRHTopsoil was the total retention capacity of the top soil layer (in mm) and ECUM was the daily moisture deficit in the retained water fraction of the topsoil layer (WRH-WR). Thus, potential soil evpaoration was the difference between the open pan evaporation and the potential crop transpiration, reduced by 10% and limited by the proportion of retained water in the topsoil layer. In addition, if POTES was close to zero it was set to a user defined minimum value ELIM.

Later, when incorporated into Sirius and AFRCWHEAT crop models, the open pan evaporation approach was replaced by potential evapotranspiration according to Penman-Monteith, but the approach to calculate POTES remained the same except that the availability of soil water was increased by considering the first four layers when calculating WRHTopsoil.

Within SIMPLACE, SlimWater receives as input value for potential crop transpiration (EVAPC) and potential evapotranspiration (EVAP) from the SimComponents EvapTranDemand.java or CropEvapoTranspirationDualCoeff.java:

1. EvapTranDemand calculates potential crop transpiration (EVAPC) and potential soil evaporation by a modified Penman approach and potential evapotranspiration (EVAPO) is defined as the sum of both

2. Dual coefficient approach calculates potential crop transpiration (EVAPC) according to FAO (Allen et al. 1991) and the potential evapotranspiration (EVAPO) is set to

the reference ET multiplied with the Kc value according to Allen et al. (1991)

In both cases the SlimWater calculates POTES with equation1 and the calculation of WRHTopsoil takes into account a user specified soil depth (tMaxSoilEvaporationdepth im m) from which soil evaporation can occur

Actual soil evaporation (EVAPS)

(Remark: The source code of this section should be revised) Actual evaporation is calculated by reducing POTES gradually depending on (1) wet or dry status of the topsoil, (2) the season (summer or winter) and (3) the amount of mobile water and retained within the maximum soil evaporation depth.

1. Reduction 1a: When the soil is wet (irrespective of the season), EVAPS is reduced to 90% of POTES
2. Reduction 1b: When the soil is dry and

(i) it is summer, POTES is divided by the number of successive days when evaporation exceeds rainfall and EVAPS is reduced to 90% of this value, but the reduction is limited until EVAPS is 0.5 mm (ii) it is winter and the soil is very dry, EVAPS is reduced to 30% of POTES. Otherwise, it is reduced to a value betweeen 90 and 30% of POTES

3. Reduction 2: If EVAPS can be satisfied by the amount of mobile water in the first soil layer, no further reduction occurs.

Otherwise EVAPS is further reduced by the amount of retained water in the top soil layers which are within the user defined maximum soil evaporation depth. In this routine, the demand for evaporation from the atmosphere is shared between these topsoil layers. This routine allows for upward movement of water between these layers within the retained soil water fraction in the fine pores (WR33)

Crop transpiration (EVAPC)

Crop transpiration depends on the one hand on crop available water in the soil profile (CAWT) and on the other hand on the crop demand (PTRAN). The potential crop water demand (potential crop transpiration, PEVAPC) is an input from other SimComponents (see above). (Note: Potential crop considers only the transpirative demand of the crop as a function of leaf area and atmospheric conditions; the demand for soil evaporation is excluded). Crop available water is a function of soil available water and the water uptake capacity (related to root properties) of the roots. Therefore, SlimWater estimates first the amount of available soil water for crop uptake in each soil layer as the amount of mobile water (SAWM(i)=WM(i)) plus 25% of the retained water (SAWR(i)=0.25*WR(i)). (Notice: the value of 0.25 can be changed by setting cCropAvailRetainedWaterFraction parameter.) Then the soil available water in each layer is multiplied with the root uptake factor FRR(i) which is supplied by other SimComponents (e.g. SlimRoots) to obtain the crop available water in the mobile (CAWM(i)) and the retained fraction (CAWR(i)). The sum of both fraction and over all layers is the total crop available water CAWT. If CAWT is greater than PEVAPC then actual crop transpiraiton (EVAPC) is equal to the potential crop transpiration (PEVAPC). Otherwise EVAPC is reduced to CAWT. The assumption that only 25% of the retained water is available to the crops is a crititcal issue. Therefore, other assumptions have been implemented in the SimComponent ImprovedSoilWater.java.

If the amount of mobile water within the soil profile (CAWMT) is sufficient to cover the crop water demand (EVAPC), the uptake of the water from the individual soil layers occurs from the mobile fractions only. The uptake from the individual layers is proportional to their share in total CAWMT. If CAWMT is not sufficient, this means that the mobile water fraction is exhausted within each layer and the remaining crop water demand is satisfied from the soil layers' retained water fraction. The uptake from an individual layer is according to the share of its retained crop available water (CAWR(i)) in the total retained crop available water (CAWRT) over the whole soil profile.

References:

• Addiscott, T.M., Heys, P.J., Whitmore, A.P., 1986. Application of simple leaching models in heterogeneous soils. Geoderma 38, 185-194.
• Addiscott, T.M., Whitmore, A.P., 1991. Simulation of solute leaching in soils with different permeabilities. Soil Use Manage. 7, 94-102.
• Jamieson, P.D., Porter, J.R., Goudriaan, J., Ritchie, J.T., van Keulen, H., Stol, W., 1998. A comparison of the models AFRCWHEAT2, CERES-wheat, Sirius, SUCROS2 and SWHEAT with measurements from wheat grown under drought. Field Crop. Res. 55, 23-44.
• Porter, J.R., 1993. AFRCWHAET2: A model of the growth and development of wheat incorporting responses to water and nitrogen. Eur. J. Agron. 2, 69-82.

Author:

Gunther Krauss, Thomas Gaiser

Component Variables

Content Type	Name	Description	Data Type	Unit	Min Value	Max Value	Default Value
constant	cALFA	The proportion of the mobile water in each layer that moves downwards to the underlying layer	DOUBLEARRAY	1	-	-	-
constant	cCalculateRunoffWater	If set to true runoff water (WFAST) is calculated, otherwise rain which exceeds infiltration capacity of the soil is by-passing the soil matrix	BOOLEAN	1	-	-	false
constant	cCropAvailRetainedWaterFraction	Fraction of retained water (WR) that is accesible by the plant. Default value is 0.25.	DOUBLE	m	0.0	1.0	0.25
constant	cDP	The proportion of leaching water which is lost from layer MD (the layer : containing the drains) through mole drains	DOUBLE	1	0.0	20.0	0.0
constant	cELIM	Minimum daily soil evaporation (mm) from the topsoil layers within soil evaporation depth (MaxSoilEvaporationDepth)	DOUBLE	mm	0.0	20.0	0.05
constant	cIFWGEN	Switch to use estimates for initial soil water content in topsoil and subsoil (set to TRUE if initial water retention characteristics are unknown)	BOOLEAN	1	-	-	false
constant	cLatitude	Latitude	DOUBLE	°	-90.0	90.0	50.7
constant	cMD	Number of layer containing mole drains	INT	1	0	1000	0
constant	cMT	Number of layers in the topsoil	INT	1	0	1000	5
constant	cMaxSoilEvaporationDepth	Maximum soil depth which supplies water for soil evaporation	DOUBLE	m	0.0	20.0	0.12
constant	cSEEDD	Sowing depth in m	DOUBLE	m	0.001	20.0	0.02
constant	cSMD	Initial soil Moisture Deficit as estimated by the user (only used when initial soil water fractions are not provided); this initial soil moisture deficit is equal to the initial DEF value)	DOUBLE	mm	0.0	20.0	0.0
constant	cSoilLayerDepth	Depth of the bottom of each soil layer after soil layer transformation	DOUBLEARRAY	m	-	-	-
constant	cSoilWaterFieldCapacity	Volumetric soil water content of each layer at field capacity (pF2.5 or -33 KPa)	DOUBLEARRAY	m3/m3	-	-	-
constant	cSoilWaterInitial	Volumetric soil water content of each layer at the start of the simulation	DOUBLEARRAY	m3/m3	-	-	-
constant	cSoilWaterReducedThreshold	Volumetric soil water content of each layer at which water is available for upward movement (pF3.3 or 200 KPa)	DOUBLEARRAY	m3/m3	-	-	-
constant	cSoilWaterSaturation	Volumetric soil water content of each layer at saturation (pF0 or 0.0 KPa)	DOUBLEARRAY	m3/m3	-	-	-
constant	cSoilWaterWiltingPoint	Volumetric soil water content of each layer at permanent wilting point (pF4.2 or -1500 KPa)	DOUBLEARRAY	m3/m3	-	-	-
constant	cWALIQ	The aliquot size in the rainfall splitting routine (mm)	DOUBLE	mm	0.0	20.0	3.0
constant	cWM1S	Amount if mobile water (WM) in the top soil layer at saturation (mm)	DOUBLE	mm	0.0	20.0	10.3
constant	cWMGENS	Default values for mobile water (WM) in the subsoil layers (only used if water retention characteristics are unknown)	DOUBLE	mm	0.0	20.0	1.9
constant	cWMGENT	Default values for mobile water (WM) in the topsoil layers (only used if water retention characteristics are unknown)	DOUBLE	mm	0.0	20.0	2.75
constant	cWRGENS	Default values for retained water (WR) in the subsoil layers (only used if water retention characteristics are unknown)	DOUBLE	mm	0.0	20.0	11.6
constant	cWRGENT	Default values for retained water (WR) in the topsoil layers (only used if water retention characteristics are unknown)	DOUBLE	mm	0.0	20.0	9.1
constant	cWRSS	the amount of water that is not available for water and solute transport in the subsoil layers (only used if water retention characteristics are unknown)	DOUBLE	mm	0.0	20.0	7.15
constant	cWRST	the amount of water that is not available for transport of water and solutes in the topsoil layers (only used if water retention characteristics are unknown)	DOUBLE	mm	0.0	20.0	4.35
input	iDoInitialize	Switch to re-initialize the model with initial values.	BOOLEAN	1	-	-	false
input	iFRR	Root restriction factor for water uptake in each soil layer as affected by root age and root density (provided by SlimRoots)	DOUBLEARRAY	1	-	-	-
input	iMD95	Number of deepest soil layer containing roots (provided by other SimComponents e.g. SlimRoots)	INT	1	0	1000	0
input	iPotentialTranspiration	Potential crop transpiration (provided by other SimComponents e.g. CropEvapoTranspirationDualCoeff.java)	DOUBLE	mm	0.0	20.0	-
input	iRAIN	Precipitation	DOUBLE	mm	0.0	20.0	-
input	iReferenceCropEvapotranspiration	Reference Evapotranspiration (ET0) provided by other SimComponents (e.g. ReferenceETHargreaves.java or ReferenceETPM.java	DOUBLE	mm	0.0	20.0	-
input	iUnusedMobileWaterPerLayer	Water that was not uptaken of plant per layer	DOUBLEARRAY	mm	0.0	-	-
input	iUnusedRetainedWaterPerLayer	Water that was not uptaken of plant per layer	DOUBLEARRAY	mm	0.0	-	-
input	iWithCrop	Switch to indicate the days of the year where a crop is present	BOOLEAN	1	-	-	false
state	sCAPS	the proportion of the soil porosity likely to support upward (capillary) movement of solutes in each soil layer	DOUBLEARRAY	1	-	-	-
state	sCAPW	the proportion of the soil porosity likely to support upward (capillary) movement of water in each soil layer	DOUBLEARRAY	1	-	-	-
state	sCAW	Cumulative amount of rainfall	DOUBLE	mm	0.0	2000000.0	0.0
state	sCAWM	Total crop available water in the mobile fraction in each soil layer	DOUBLEARRAY	mm	-	-	-
state	sCAWMT	Total crop available water in the mobile fraction over the actual rooting depth	DOUBLE	mm	0.0	2000000.0	0.0
state	sCAWR	Total crop available water in the retained fraction in each soil layer	DOUBLEARRAY	mm	-	-	-
state	sCAWRT	Total crop available water in the retained fraction over the actual rooting depth	DOUBLE	mm	0.0	2000000.0	0.0
state	sCAWT	Total crop available water over the actual rooting depth	DOUBLE	mm	0.0	2000000.0	0.0
state	sDEF	Daily soil moisture deficit (Difference between Rainfall and (Transpiration+Soil evaporation))	DOUBLE	mm	-2000.0	200000.0	-
state	sECUM	Daily soil moisture deficit in the retained water fraction (WRH(I)-WR(I)) of the topsoil layer (i=0) in mm	DOUBLE	mm	-2000.0	2000.0	-
state	sNNR	Number of successive days when 0.9*(potential soil evaporation) exceeds rainfall	DOUBLE	mm	0.0	2000.0	-
state	sSOILAV	Sum of soil available retained (SAWR) and soil available mobile (SAWM) water in each layer	DOUBLEARRAY	mm	-	-	-
state	sTWM	Total amount of mobile water over the soil profile	DOUBLE	mm	0.0	200000.0	0.0
state	sTWR	Total amount of retained water over the soil profile	DOUBLE	mm	0.0	200000.0	0.0
state	sTWRH	Total soil available water capacity over the soil profile	DOUBLE	mm	0.0	200000.0	0.0
state	sWFR	Amount of less mobile water in each layer not available for upward movement of solutes or water (DUL(i)-AML(i))	DOUBLEARRAY	mm	-	-	-
state	sWHT15R	Retained water below 0.5*wilting point in each layer not available for movement of solutes	DOUBLEARRAY	mm	-	-	-
state	sWLM	Total amount of less mobile water (WR-WHT15R) in each layer (only used for solute transport)	DOUBLEARRAY	mm	-	-	-
state	sWM	Daily amount of mobile water (WM) in each soil layer (mm)	DOUBLEARRAY	mm	-	-	-
state	sWM1S	Amount of mobile water (WM) in the top layer at saturation (mm)	DOUBLE	mm	0.0	20.0	10.3
state	sWMBeforeLeaching	Daily amount of mobile water in each soil layer before leaching occurs	DOUBLEARRAY	mm	-	-	-
state	sWR	Daily amount of retained water (WR) in each soil layer (mm)	DOUBLEARRAY	mm	-	-	-
state	sWR33	Amount of retained water in finer pores of each layer available for upward movement of solutes or water(AML(i)-WHT15R(i))	DOUBLEARRAY	mm	-	-	-
state	sWRH	Retained water at field capacity in layer i	DOUBLEARRAY	mm	-	-	-
state	sW_out	Water leaving each soil layer by vertical drainage percolating to the layer below	DOUBLEARRAY	mm	-	-	-
out	ActualEvapotranspiration	Sum of 'Evaporation' and 'Transpiration'	DOUBLE	mm	0.0	20.0	0.0
out	ActualSoilEvaporation	Actual soil evaporation as affected by potential evporation and soil mositure in the upper soil layers	DOUBLE	mm	0.0	20.0	0.0
out	ActualTranspiration	Actual crop transpiration as affected by crop water demand (EVAPC) and crop available soil water (CAWT)	DOUBLE	mm	0.0	20.0	0.0
out	CumulativeActualSoilEvaporation	Cumulative soil evaporation over time	DOUBLE	mm	0.0	2000000.0	0.0
out	CumulativeActualTranspiration	Cumulative crop transpiration over time	DOUBLE	mm	0.0	2000000.0	0.0
out	DRYFAC	Dryness factor in each layer	DOUBLEARRAY	1	-	-	-
out	MobileWaterUptakePerLayer	Water uptake of plant per layer	DOUBLEARRAY	mm	0.0	-	-
out	PotentialEvapotranspiration	Sum of 'Potential Transpiration' and 'Potential Evaporation'	DOUBLE	mm	0.0	22.0	0.0
out	PotentialSoilEvaporation	Potential soil evaporation (provided by other SimComponents e.g. CropEvapoTranspirationDualCoeff.java)	DOUBLE	mm	0.0	20.0	0.0
out	PotentialTranspiration	Potential crop transpiration (provided by other SimComponents e.g. CropEvapoTranspirationDualCoeff.java)	DOUBLE	mm	0.0	20.0	0.0
out	RetainedWaterUptakePerLayer	Water uptake of plant per layer	DOUBLEARRAY	mm	0.0	-	-
out	THICKL	Standardized thickness of soil layers (after soil layer transformation)	DOUBLE	m	0.001	20.0	0.0
out	TLW	Sum of Mobile and retained water content over all soil layers (mm)	DOUBLE	mm	0.0	2000.0	0.0
out	TotalCropAvailVolumetricWaterContent	Volumetric total crop avail water over the actual rooting depth	DOUBLE	m3/m3	0.0	1000.0	-
out	TotalCropAvailVolumetricWaterContentFirstLayer	Volumetric total water content in the first soil layer	DOUBLE	m3/m3	0.0	-	-
out	TotalCropAvailVolumetricWaterContentPerLayer	Volumetric crop available water content in each soil layer	DOUBLEARRAY	m3/m3	0.0	50.0	-
out	TotalCropAvailWaterContent	Total crop available water over the actual rooting depth	DOUBLE	mm	0.0	-	-
out	TotalCropAvailWaterContentFirstLayer	Total crop available water content in the first soil layer	DOUBLE	mm	0.0	-	-
out	TotalCropAvailWaterContentPerLayer	Total crop available water per soil layer (mm)	DOUBLEARRAY	mm	0.0	-	-
out	TotalSoilAvailVolumetricWaterContent	Volumetric total Sum of mobile and retained water over all layers	DOUBLE	m3/m3	0.0	1000.0	-
out	TotalSoilAvailVolumetricWaterContentPerLayer	Sum of volumetric mobile and retained water in each layer	DOUBLEARRAY	m3/m3	0.0	-	-
out	TotalSoilAvailWaterContent	Total Sum of mobile and retained water over all layers	DOUBLE	mm	0.0	-	-
out	TotalSoilAvailWaterContentPerLayer	Sum of mobile and retained water in each layer	DOUBLEARRAY	mm	0.0	-	-
out	TotalVolumetricWaterContent	Volumetric total water content over all soil layers	DOUBLE	m3/m3	0.0	1000.0	-
out	TotalVolumetricWaterContentFirstLayer	Volumetric total water content in the first layer	DOUBLE	m3/m3	0.0	-	-
out	TotalVolumetricWaterContentPerLayer	Volumetric total water content in each soil layer	DOUBLEARRAY	m3/m3	0.0	0.6	-
out	TotalVolumetricWaterContentUpperLayers	Volumetric total water content over the rooting depth	DOUBLE	m3/m3	0.0	-	-
out	TotalWaterContent	Total water content over all soil layers (mm)	DOUBLE	mm	0.0	1000.0	0.0
out	TotalWaterContentFirstLayer	Total water content in the first layer (mm)	DOUBLE	mm	0.0	-	-
out	TotalWaterContentPerLayer	Total water content in each soil layer (mm)	DOUBLEARRAY	mm	0.0	-	-
out	TotalWaterContentUpperLayers	Total water content over the rooting depth in mm	DOUBLE	mm	0.0	-	-
out	WDRAIN	Daily amount of water lost through mole drains (only calculated if MD>-1)	DOUBLE	mm	0.0	2000.0	0.0
out	WFAST	If cCalculateSurfaceRunoff is TRUE: Daily amount of surface run-off (mm); If FALSE: WFAST is the infiltration excess water by-passing the soil matrix	DOUBLE	mm	0.0	2000.0	0.0
out	WSEEP	Daily amount of deep percolation (mm)	DOUBLE	mm	0.0	2000.0	0.0
out	WaterBalance	Daily Water Balance over the soil profile (mm)	DOUBLE	mm	-20000.0	20000.0	0.0
out	WaterUptakePerLayer	Water uptake of plant per layer	DOUBLEARRAY	mm	0.0	-	-

Nested Class Summary

Nested classes/interfaces inherited from class net.simplace.sim.model.FWSimComponent

net.simplace.sim.model.FWSimComponent.TEST_STATE

Field Summary

Fields inherited from class net.simplace.sim.model.FWSimComponent

iFieldMap, iFrequence, iInputMap, iJexlRule, iMasterComponentGroup, iName, iOrderNumber, isComponentGroup, iSimComponentElement, iSimModel, iVarMap

Constructor Summary

Constructors

Modifier	Constructor	Description
	SlimWater()	called from class.forName()
protected	SlimWater(String aName, HashMap<String,net.simplace.sim.util.FWSimVariable<?>> aFieldMap, HashMap<String,String> aInputMap, org.jdom2.Element aSimComponentElement, net.simplace.sim.util.FWSimVarMap aVarMap, int aOrderNumber)

Method Summary

Modifier and Type	Method	Description
protected net.simplace.sim.model.FWSimComponent	clone(net.simplace.sim.util.FWSimVarMap aVarMap)
HashMap<String,net.simplace.sim.util.FWSimVariable<?>>	createVariables()
HashMap<String,net.simplace.sim.util.FWSimVariable<?>>	fillTestVariables(int aParamIndex, net.simplace.sim.model.FWSimComponent.TEST_STATE aDefineOrCheck)	called for single component test to check the components algorithm.
protected void	init()
protected void	process()
protected void	reInitialize()

Methods inherited from class net.simplace.sim.model.FWSimComponent

addVariable, bind, checkCondition, createSimComponent, createSimComponent, createSimComponent, createSimComponent, doProcess, getConstantVariables, getContentType, getCreateFormXML, getDescription, getEditFormXML, getFieldMap, getFrequence, getFrequenceRuleScript, getInputs, getInputVariables, getMasterComponentGroup, getName, getOrderNumber, getOutputVariables, getVariable, getVariableField, getVarMap, initialize, isConditionCheck, isVariableAvailable, performLinks, performLinks, readInputs, removeVariable, reset, runComponentTest, setVariablesDefault, toComponentLinkingXML, toDocXML, toGroupXML, toOutputDefinitionXML, toResourcesDataXML, toResourcesDefinitionXML, toString, toXML, writeVarInfos

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

SlimWater

protected SlimWater(String aName,
 HashMap<String,net.simplace.sim.util.FWSimVariable<?>> aFieldMap,
 HashMap<String,String> aInputMap,
 org.jdom2.Element aSimComponentElement,
 net.simplace.sim.util.FWSimVarMap aVarMap,
 int aOrderNumber)

Parameters:

aName -

aFieldMap -

aInputMap -

aSimComponentElement -

aVarMap -

aOrderNumber -

SlimWater

public SlimWater()

called from class.forName()

Method Details

createVariables

public HashMap<String,net.simplace.sim.util.FWSimVariable<?>> createVariables()

Specified by:

createVariables in interface net.simplace.sim.util.FWSimFieldContainer

Specified by:

createVariables in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.createVariables()

init

protected void init()

Specified by:

init in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.init()

reInitialize

protected void reInitialize()

process

protected void process()

Specified by:

process in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.process()

fillTestVariables

public HashMap<String,net.simplace.sim.util.FWSimVariable<?>> fillTestVariables(int aParamIndex,
 net.simplace.sim.model.FWSimComponent.TEST_STATE aDefineOrCheck)

called for single component test to check the components algorithm.

Specified by:

fillTestVariables in class net.simplace.sim.model.FWSimComponent

See Also:

• net.simplace.sim.util.FWSimFieldContainer#fillTestVariables(int aParamIndex, TEST_STATE aDefineOrCheck)

clone

protected net.simplace.sim.model.FWSimComponent clone(net.simplace.sim.util.FWSimVarMap aVarMap)

Specified by:

clone in class net.simplace.sim.model.FWSimComponent

See Also:

• FWSimComponent.clone(net.simplace.sim.util.FWSimVarMap)