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from ..entities.initParamVariables import InitialCondition
from ..entities.modelConstants import ModelConstants
from typing import Tuple, TYPE_CHECKING
if TYPE_CHECKING:
# Important: classes are only imported when types are checked, not in production.
from aquacrop.entities.crop import Crop
from aquacrop.entities.inititalWaterContent import InitialWaterContent
from aquacrop.entities.clockStruct import ClockStruct
from aquacrop.entities.paramStruct import ParamStruct
from aquacrop.entities.initParamVariables import InitialCondition
def read_model_initial_conditions(
ParamStruct: "ParamStruct",
ClockStruct: "ClockStruct",
InitWC: "InitialWaterContent",
crop: "Crop") -> Tuple["ParamStruct", "InitialCondition"]:
"""
Function to set up initial model conditions
Arguments:
ParamStruct (ParamStruct): Contains model paramaters
ClockStruct (ClockStruct): time paramaters
InitWC (InitialWaterContent): initial water content
crop (Crop): crop parameters
Returns:
ParamStruct (ParamStruct): updated ParamStruct object
InitCond (InitialCondition): containing initial model conditions/counters
"""
###################
# creat initial condition class
###################
InitCond = InitialCondition(len(ParamStruct.Soil.profile))
# class_args = {key:value for key, value in InitCond_class.__dict__.items() if not key.startswith('__') and not callable(key)}
# InitCond = InitCondStruct(**class_args)
if ClockStruct.season_counter == -1:
InitCond.z_root = 0.
InitCond.cc0_adj = 0.
elif ClockStruct.season_counter == 0:
InitCond.z_root = ParamStruct.Seasonal_Crop_List[0].Zmin
InitCond.cc0_adj = ParamStruct.Seasonal_Crop_List[0].CC0
# Set HIfinal to crop's reference harvest index
InitCond.HIfinal = crop.HI0
##################
# save field management
##################
# Initial surface storage between any soil bunds
if ClockStruct.season_counter == -1:
# First day of simulation is in fallow period
if (ParamStruct.FallowFieldMngt.bunds) and (
float(ParamStruct.FallowFieldMngt.z_bund) > 0.001
):
# Get initial storage between surface bunds
InitCond.surface_storage = float(ParamStruct.FallowFieldMngt.bund_water)
if InitCond.surface_storage > float(ParamStruct.FallowFieldMngt.z_bund):
InitCond.surface_storage = float(ParamStruct.FallowFieldMngt.z_bund)
else:
# No surface bunds
InitCond.surface_storage = 0
elif ClockStruct.season_counter == 0:
# First day of simulation is in first growing season
# Get relevant field management structure parameters
FieldMngtTmp = ParamStruct.FieldMngt
if (FieldMngtTmp.bunds) and (float(FieldMngtTmp.z_bund) > 0.001):
# Get initial storage between surface bunds
InitCond.surface_storage = float(FieldMngtTmp.bund_water)
if InitCond.surface_storage > float(FieldMngtTmp.z_bund):
InitCond.surface_storage = float(FieldMngtTmp.z_bund)
else:
# No surface bunds
InitCond.surface_storage = 0
############
# watertable
############
profile = ParamStruct.Soil.profile
# Check for presence of groundwater table
if ParamStruct.water_table == 0: # No water table present
# Set initial groundwater level to dummy value
InitCond.z_gw = ModelConstants.NO_VALUE
InitCond.wt_in_soil = False
# Set adjusted field capacity to default field capacity
InitCond.th_fc_Adj = profile.th_fc.values
elif ParamStruct.water_table == 1: # Water table is present
# Set initial groundwater level
InitCond.z_gw = float(ParamStruct.z_gw[ClockStruct.time_step_counter])
# Find compartment mid-points
zMid = profile.zMid
# Check if water table is within modelled soil profile
if InitCond.z_gw >= 0:
idx = zMid[zMid >= InitCond.z_gw].index
if idx.shape[0] == 0:
InitCond.wt_in_soil = False
else:
InitCond.wt_in_soil = True
else:
InitCond.wt_in_soil = False
# Adjust compartment field capacity
compi = int(len(profile)) - 1
thfcAdj = np.zeros(compi + 1)
while compi >= 0:
# get soil layer of compartment
compdf = profile.loc[compi]
if compdf.th_fc <= 0.1:
Xmax = 1
else:
if compdf.th_fc >= 0.3:
Xmax = 2
else:
pF = 2 + 0.3 * (compdf.th_fc - 0.1) / 0.2
Xmax = (np.exp(pF * np.log(10))) / 100
if (InitCond.z_gw < 0) or ((InitCond.z_gw - zMid.iloc[compi]) >= Xmax):
for ii in range(compi+1):
compdfii = profile.loc[ii]
thfcAdj[ii] = compdfii.th_fc
compi = -1
else:
if compdf.th_fc >= compdf.th_s:
thfcAdj[compi] = compdf.th_fc
else:
if zMid.iloc[compi] >= InitCond.z_gw:
thfcAdj[compi] = compdf.th_s
else:
dV = compdf.th_s - compdf.th_fc
dFC = (dV / (Xmax ** 2)) * ((zMid.iloc[compi] - (InitCond.z_gw - Xmax)) ** 2)
thfcAdj[compi] = compdf.th_fc + dFC
compi = compi - 1
# Store adjusted field capacity values
InitCond.th_fc_Adj = np.round(thfcAdj, 3)
profile["th_fc_Adj"] = np.round(InitCond.th_fc_Adj, 3)
# create hydrology df to group by layer instead of compartment
ParamStruct.Soil.Hydrology = profile.groupby("Layer").mean().drop(["dz", "dzsum"], axis=1)
ParamStruct.Soil.Hydrology["dz"] = profile.groupby("Layer").sum().dz
###################
# initial water contents
###################
typestr = InitWC.wc_type
methodstr = InitWC.method
depth_layer = InitWC.depth_layer
datapoints = InitWC.value
values = np.zeros(len(datapoints))
hydf = ParamStruct.Soil.Hydrology
# Assign data
if typestr == "Num":
# Values are defined as numbers (m3/m3) so no calculation required
depth_layer = np.array(depth_layer, dtype=float)
values = np.array(datapoints, dtype=float)
elif typestr == "Pct":
# Values are defined as percentage of taw. Extract and assign value for
# each soil layer based on calculated/input soil hydraulic properties
depth_layer = np.array(depth_layer, dtype=float)
datapoints = np.array(datapoints, dtype=float)
for ii in range(len(values)):
if methodstr == "Depth":
depth = depth_layer[ii]
value = datapoints[ii]
# Find layer at specified depth
if depth < profile.dzsum.iloc[-1]:
layer = profile.query(f"{depth}<dzsum").Layer.iloc[0]
else:
layer = profile.Layer.iloc[-1]
compdf = hydf.loc[layer]
# Calculate moisture content at specified depth
values[ii] = compdf.th_wp + ((value / 100) * (compdf.th_fc - compdf.th_wp))
elif methodstr == "Layer":
# Calculate moisture content at specified layer
layer = depth_layer[ii]
value = datapoints[ii]
compdf = hydf.loc[layer]
values[ii] = compdf.th_wp + ((value / 100) * (compdf.th_fc - compdf.th_wp))
elif typestr == "Prop":
# Values are specified as soil hydraulic properties (SAT, FC, or WP).
# Extract and assign value for each soil layer
depth_layer = np.array(depth_layer, dtype=float)
datapoints = np.array(datapoints, dtype=str)
for ii in range(len(values)):
if methodstr == "Depth":
# Find layer at specified depth
depth = depth_layer[ii]
value = datapoints[ii]
# Find layer at specified depth
if depth < profile.dzsum.iloc[-1]:
layer = profile.query(f"{depth}<dzsum").Layer.iloc[0]
else:
layer = profile.Layer.iloc[-1]
compdf = hydf.loc[layer]
# Calculate moisture content at specified depth
if value == "SAT":
values[ii] = compdf.th_s
if value == "FC":
values[ii] = compdf.th_fc
if value == "WP":
values[ii] = compdf.th_wp
elif methodstr == "Layer":
# Calculate moisture content at specified layer
layer = depth_layer[ii]
value = datapoints[ii]
compdf = hydf.loc[layer]
if value == "SAT":
values[ii] = compdf.th_s
if value == "FC":
values[ii] = compdf.th_fc
if value == "WP":
values[ii] = compdf.th_wp
# Interpolate values to all soil compartments
thini = np.zeros(int(profile.shape[0]))
if methodstr == "Layer":
for ii in range(len(values)):
layer = depth_layer[ii]
value = values[ii]
idx = profile.query(f"Layer=={int(layer)}").index
thini[idx] = value
InitCond.th = thini
elif methodstr == "Depth":
depths = depth_layer
# Add zero point
if depths[0] > 0:
depths = np.append([0], depths)
values = np.append([values[0]], values)
# Add end point (bottom of soil profile)
if depths[-1] < ParamStruct.Soil.zSoil:
depths = np.append(depths, [ParamStruct.Soil.zSoil])
values = np.append(values, [values[-1]])
# Find centroids of compartments
SoilDepths = profile.dzsum.values
comp_top = np.append([0], SoilDepths[:-1])
comp_bot = SoilDepths
comp_mid = (comp_top + comp_bot) / 2
# Interpolate initial water contents to each compartment
thini = np.interp(comp_mid, depths, values)
InitCond.th = thini
# If groundwater table is present and calculating water contents based on
# field capacity, then reset value to account for possible changes in field
# capacity caused by capillary rise effects
if ParamStruct.water_table == 1:
if (typestr == "Prop") and (datapoints[-1] == "FC"):
InitCond.th = InitCond.th_fc_Adj
# If groundwater table is present in soil profile then set all water
# contents below the water table to saturation
if InitCond.wt_in_soil is True:
# Find compartment mid-points
SoilDepths = profile.dzsum.values
comp_top = np.append([0], SoilDepths[:-1])
comp_bot = SoilDepths
comp_mid = (comp_top + comp_bot) / 2
idx = np.where(comp_mid >= InitCond.z_gw)[0][0]
for ii in range(idx, len(profile)):
layeri = profile.loc[ii].Layer
InitCond.th[ii] = hydf.th_s.loc[layeri]
InitCond.thini = InitCond.th
ParamStruct.Soil.profile = profile
ParamStruct.Soil.Hydrology = hydf
return ParamStruct, InitCond
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