Introduction

This section provides an overview of all model parameters, states and variables in tables that can be exchanged (input and output) with standard names (subsection below) for:

• The Land Hydrology SBM model.
• The Land Sediment model
• Routing concepts

These tables include standard names, descriptions, units and default values (input parameters) for model parameters, states and variables. Note that a state variable can also be specified as a model output variable but is listed only in the states table and not in in the output table. The time unit of input flux parameters is day (the model base time step size), hence default values for these parameters are expressed per day. During model initialization these input parameters are converted to the user-defined model time step size Δt.

Standard names

The standard names of model parameters, states and variables are based on CSDMS Standard Names. These standard names are used in the TOML configuration file and mapped to internal model parameters, states and variables. Model output of model parameters ([output] section of TOML file) is not possible by providing standard names as these are only used for setting model parameters during model initialization, except for parameters that can also have cyclic input. These parameters are listed in tables below “Static or cyclic/forcing input” subsections (for example). To output model parameters and variables without a standard name one to one mapping (dot notation) can be used in the TOML configuration file, but this is not considered as part of the public API, e.g.:

[output.netcdf_grid.variables]
land.interception.variables.canopy_storage = "canopystorage"

Standard names that contain instantaneous in the quantity part of the standard name can be valid for an internal time step (for example for kinematic wave routing an internal time step is optional (and recommended), with a time step equal to the model simulation time step the standard name nonetheless contains instantaneous) and thus considered instantaneous compared to the model simulation time step Δt $[\mathrm{s}]$. Standard names can contain a tilde that are used to distinguish nouns and adjectives in the object part of the standard name. These standard names should be quoted in the TOML configuration file, e.g.:

[input.static]
"soil~compacted__area_fraction".value = 0.2

Generic input maps

The table below lists static input maps that are not directly part of wflow models and are required to run wflow.

Standard Name	Description	Unit	Default value
basin__local_drain_direction	Local drain direction (1-9)	-	-
subbasin_location__count	Subbasin ids	-	-
river_location__mask	River mask (0-1)	-	-

For reservoir generic input see reservoir-input.