Global Snowmelt Processing Methods

Global snowmelt processing methods. More...

Collaboration diagram for Global Snowmelt Processing Methods:

Functions
int	snow_readMeltParams (char *tok[], int ntoks)
	Reads snowmelt parameters from a tokenized line of input data.
int	snow_createSnowpack (int subcatchIndex, int snowIndex)
	Creates a snowpack object for a subcatchment.
void	snow_validateSnowmelt (int snowIndex)
	Checks for valid values in a snowmelt parameter set.
void	snow_initSnowpack (int subcatchIndex)
	Initializes state of a subcatchment's snowpack.
void	snow_initSnowmelt (int snowIndex)
	Initializes values in a snowmelt parameter set.
void	snow_getState (int subcatchIndex, int subAreaIndex, double x[])
	Retrieves the current state of a snowpack object.
void	snow_setState (int subcatchIndex, int subAreaIndex, double x[])
	Sets the current state of a snowpack object.
void	snow_setMeltCoeffs (int snowIndex, double season)
	Sets values of snowmelt coefficients for a particular time of year.
void	snow_plowSnow (int subcatchIndex, double tStep)
	Adds new snow to subcatchment and plows it between sub-areas.
double	snow_getSnowMelt (int subcatchIndex, double rainfall, double snowfall, double tStep, double netPrecip[])
	Modifies rainfall input to subcatchment's subareas based on possible snow melt and updates snow depth over entire subcatchment.
double	snow_getSnowCover (int subcatchIndex)
	Computes volume of snow on a subcatchment.

Detailed Description

Global snowmelt processing methods.

Function Documentation

snow_createSnowpack()

int snow_createSnowpack	(	int	subcatchIndex,
		int	snowIndex )

Creates a snowpack object for a subcatchment.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	snowIndex	Snowmelt parameter set index

Returns

TRUE if successful, FALSE if not

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snow_getSnowCover()

double snow_getSnowCover

(

int

subcatchIndex

)

Computes volume of snow on a subcatchment.

Parameters

[in]

subcatchIndex

Subcatchment index

Returns

Volume of snow cover (ft3)

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snow_getSnowMelt()

double snow_getSnowMelt	(	int	subcatchIndex,
		double	rainfall,
		double	snowfall,
		double	tStep,
		double	netPrecip[] )

Modifies rainfall input to subcatchment's subareas based on possible snow melt and updates snow depth over entire subcatchment.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	rainfall	Rainfall (ft/sec)
[in]	snowfall	Snowfall (ft/sec)
[in]	tStep	Time step (sec)
[out]	netPrecip	Rainfall + snowmelt on each runoff sub-area (ft/sec)

Returns

New snow depth over subcatchment

snow_getState()

void snow_getState	(	int	i,
		int	j,
		double	x[] )

Retrieves the current state of a snowpack object.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	subAreaIndex	Snowpack sub-area index
[out]	x	Array of snowpack state variables
[in]	subcatch	Subcatchment index
[in]	subArea	Snowpack sub-area index
[out]	x	Array of snowpack state variables

snow_initSnowmelt()

void snow_initSnowmelt

(

int

snowIndex

)

Initializes values in a snowmelt parameter set.

Parameters

[in]

snowIndex

Snowmelt parameter set index

snow_initSnowpack()

void snow_initSnowpack

(

int

subcatchIndex

)

Initializes state of a subcatchment's snowpack.

Parameters

[in]

subcatchIndex

Subcatchment index

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snow_plowSnow()

void snow_plowSnow	(	int	subcatchIndex,
		double	tStep )

Adds new snow to subcatchment and plows it between sub-areas.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	tStep	Time step (sec)

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snow_readMeltParams()

int snow_readMeltParams	(	char *	tok[],
		int	ntoks )

Reads snowmelt parameters from a tokenized line of input data.

Parameters

[in]	tok	Array of string tokens
[in]	ntoks	Number of tokens

Returns

Error code

Format of data are:

• Name SubArea Cmin Cmax Tbase FWF SD0 FW0 SNN0/SD100
• Name REMOVAL SDplow Fout Fimperv Fperv Fimelt Fsubcatch (Subcatch)

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snow_setMeltCoeffs()

void snow_setMeltCoeffs	(	int	snowIndex,
		double	season )

Sets values of snowmelt coefficients for a particular time of year.

Parameters

[in]	snowIndex	Snowmelt parameter set index
[in]	season	Season of the year

snow_setState()

void snow_setState	(	int	subcatchIndex,
		int	subAreaIndex,
		double	x[] )

Sets the current state of a snowpack object.

Parameters

[in]	subcatchIndex	Subcatchment index
[in]	subAreaIndex	Snowpack sub-area index
[in]	x	Array of snowpack state variables

snow_validateSnowmelt()

void snow_validateSnowmelt

(

int

snowIndex

)

Checks for valid values in a snowmelt parameter set.

Parameters

[in]

snowIndex

Snowmelt parameter set index

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