Detailed Description

Calculates ETpot after Turc (DVWK).

\(ET_{act}\) is calculated using a WaterStressFunction

\[ ET_{pot,Turc} = 0.0031 C(rH) (R_G + 209) \frac{T}{T + 15} \]

where:

\(T\) is the mean daily temperature
\(C(rH) = \begin{cases} 1 + \frac{50\% - rH}{70\%}, & rH < 50\% \\ 1 & rH > 50\% \end{cases} \), a modification parameter for low humidity
\(rH\) relative Humidity in %
\(R_G\) global radiation in \(J/cm^2\)

Public Member Functions
real	conc (cmf::math::Time t, const cmf::water::solute &_Solute)
	Returns the concentration of the flux.

flux_node::ptr	get_target (const flux_node &inquirer)
	Returns the other end of a connection than the asking end.

flux_node::ptr	get_target (int index) const
	With index 0, the left node is returned, with index 1 the right node of the connection.

real	get_tracer_filter ()
	A value ranging from 0 to 1 to filter tracers out of the water flux.

real	get_tracer_filter (solute S)
	A value ranging from 0 to 1 to filter tracers out of the water flux.

bool	kill_me ()
	Deregisters this connection from its nodes. Returns true if only one reference is left.

flux_node::ptr	left_node () const
	Returns the left node of this connection.

real	q (const flux_node &inquirer, cmf::math::Time t)
	Returns the current flux through a connection. Negative signs mean out of the inquirer, positive are inflows to the inquirer.

void	refresh (cmf::math::Time t)
	Performes a new calculation of the flux.

flux_node::ptr	right_node () const
	returns the right node of this connection

void	set_tracer_filter (real value)
	A value ranging from 0 to 1 to filter tracers out of the water flux.

Static Public Member Functions
static void	use_for_cell (cmf::upslope::Cell &cell)
	Connects all soil layers with the transpiration node of the cell.

Public Attributes
const std::string	type
	A string describing the type of the connection.

Member Function Documentation

real conc	(	cmf::math::Time	t,
		const cmf::water::solute &	_Solute )

inherited

Returns the concentration of the flux.

If not overridden, it returns the concentration of the source of the flux (direction depending)

real get_tracer_filter ( )

inherited

A value ranging from 0 to 1 to filter tracers out of the water flux.

1.0 is no filter and 0.0 means no solute is crossing this connection

void set_tracer_filter ( real value )

inherited

A value ranging from 0 to 1 to filter tracers out of the water flux.

1.0 is no filter and 0.0 means no solute is crossing this connection