runoffGrid Class Reference

Object for storing and calculating the saturation and hence surface runoff when using spatially variable rainfall input (j_mean, but 2D, i.e. j_mean_array[i][j], same as model. More...

#include <LSDRainfallRunoff.hpp>

Public Member Functions
	runoffGrid (int imax, int jmax)
	Basic constructor – initialises arrays to domain size.
	runoffGrid (int current_rainfall_timestep, int imax, int jmax, int rain_factor, double M, const rainGrid &current_rainGrid, const TNT::Array2D< double > &elevations)
	Create a rainfallrunoffGrid from passing params and refs to params.
void	calculate_runoff (int rain_factor, double M, int jmax, int imax, const rainGrid &current_rainGrid, const TNT::Array2D< double > &elevations)
void	write_runoffGrid_to_raster_file (double xmin, double ymin, double cellsize, std::string RUNOFFGRID_FNAME, std::string RUNOFFGRID_EXTENSION)
double	get_j (int m, int n) const
double	get_jo (int m, int n) const
double	get_j_mean (int m, int n) const
double	get_old_j_mean (int m, int n) const
double	get_new_j_mean (int m, int n) const
void	set_j_mean (int m, int n, double cell_j_mean)

Protected Attributes
TNT::Array2D< double >	j_array
TNT::Array2D< double >	jo_array
TNT::Array2D< double >	j_mean_array
TNT::Array2D< double >	old_j_mean_array
TNT::Array2D< double >	new_j_mean_array

Detailed Description

Object for storing and calculating the saturation and hence surface runoff when using spatially variable rainfall input (j_mean, but 2D, i.e. j_mean_array[i][j], same as model.

This object treats runoff production as spatially variable at the same resolution as the model domain DEM. It calculates runoff separately for every grid cell, so is slightly different from the TOPMODEL formulation which divides the runoff response into zones with similar attributes.

Author

DAV

Member Function Documentation

void runoffGrid::calculate_runoff	(	int	rain_factor,
		double	M,
		int	jmax,
		int	imax,
		const rainGrid &	current_rainGrid,
		const TNT::Array2D< double > &	elevations
	)

Calculates runoff and updates the rainfallrunoffGrid object accordingly Introduced to be able to create an empty runoff object and then later initialise it, or update an exisiting runoff grid for a new timestep, Takes a ref to a rainGrid object and the elevations array from LSDCatchmentModel

void runoffGrid::set_j_mean ( int  m, int  n, double  cell_j_mean  )

inline

Sets the value of j_mean when calculating the hydrograh

Parameters

m,n	array indices, new value to set (double)

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The documentation for this class was generated from the following files:

• LSDRainfallRunoff.hpp
• LSDRainfallRunoff.cpp