from imod.mf6.pkgbase import BoundaryCondition
[docs]class Evapotranspiration(BoundaryCondition):
"""
Evapotranspiration (EVT) Package.
Any number of EVT Packages can be specified for a single groundwater flow
model. All single-valued variables are free format.
https://water.usgs.gov/water-resources/software/MODFLOW-6/mf6io_6.0.4.pdf#page=86
Parameters
----------
surface: array of floats (xr.DataArray)
is the elevation of the ET surface (L). A time-series name may be
specified.
rate: array of floats (xr.DataArray)
is the maximum ET flux rate (LT −1). A time-series name may be
specified.
depth: array of floats (xr.DataArray)
is the ET extinction depth (L). A time-series name may be specified.
proportion_rate: array of floats (xr.DataArray)
is the proportion of the maximum ET flux rate at the bottom of a segment
(dimensionless). A time-series name may be specified. (petm)
proportion_depth: array of floats (xr.DataArray)
is the proportion of the ET extinction depth at the bottom of a segment
(dimensionless). A timeseries name may be specified. (pxdp)
fixed_cell: array of floats (xr.DataArray)
indicates that evapotranspiration will not be reassigned to a cell
underlying the cell specified in the list if the specified cell is
inactive.
print_input: ({True, False}, optional)
keyword to indicate that the list of evapotranspiration information will
be written to the listing file immediately after it is read.
Default is False.
print_flows: ({True, False}, optional)
Indicates that the list of evapotranspiration flow rates will be printed
to the listing file for every stress period time step in which “BUDGET
PRINT”is specified in Output Control. If there is no Output Control
option and PRINT FLOWS is specified, then flow rates are printed for the
last time step of each stress period.
Default is False.
save_flows: ({True, False}, optional)
Indicates that evapotranspiration flow terms will be written to the file
specified with “BUDGET FILEOUT” in Output Control.
Default is False.
observations: [Not yet supported.]
Default is None.
"""
__slots__ = (
"surface",
"rate",
"depth",
"proportion_rate",
"proportion_depth",
"fixed_cell",
"print_input",
"print_flows",
"save_flows",
"observations",
)
_pkg_id = "evt"
_binary_data = ("surface", "rate", "depth", "proportion_depth", "proportion_rate")
_template = BoundaryCondition._initialize_template(_pkg_id)
def __init__(
self,
surface,
rate,
depth,
proportion_rate,
proportion_depth,
fixed_cell=False,
print_input=False,
print_flows=False,
save_flows=False,
observations=None,
):
super(__class__, self).__init__()
self["surface"] = surface
self["rate"] = rate
self["depth"] = depth
if ("segment" in proportion_rate.dims) ^ ("segment" in proportion_depth.dims):
raise ValueError(
"Segment must be provided for both proportion_rate and"
" proportion_depth, or for none at all."
)
self["proportion_rate"] = proportion_rate
self["proportion_depth"] = proportion_depth
self["fixed_cell"] = fixed_cell
self["print_input"] = print_input
self["print_flows"] = print_flows
self["save_flows"] = save_flows
self["observations"] = observations
# TODO: add write logic for transforming proportion rate and depth to
# the right shape in the binary file.