PAYearlyCycle Class Reference

#include <PISMAtmosphere.hh>

Inheritance diagram for PAYearlyCycle:

Public Member Functions
	PAYearlyCycle (IceGrid &g, const NCConfigVariable &conf)
virtual PetscErrorCode	init (PISMVars &vars)
	Allocates memory and reads in the snow precipitaion data.
virtual PetscErrorCode	write_model_state (PetscReal, PetscReal, string filename)
	Writes fields that were read from an input file and are necessary for restarting.
virtual PetscErrorCode	write_diagnostic_fields (PetscReal t_years, PetscReal dt_years, string filename)
	Updates the model and writes all the internal fields (for testing and debugging).
virtual PetscErrorCode	write_fields (set< string > vars, PetscReal t_years, PetscReal dt_years, string filename)
virtual PetscErrorCode	update (PetscReal t_years, PetscReal dt_years)=0
	This method implements the parameterization.
virtual PetscErrorCode	mean_precip (PetscReal t_years, PetscReal dt_years, IceModelVec2S &result)
	Copies the stored snow precipitation field into result.
virtual PetscErrorCode	mean_annual_temp (PetscReal t_years, PetscReal dt_years, IceModelVec2S &result)
	Copies the stored mean annual near-surface air temperature field into result.
virtual PetscErrorCode	begin_pointwise_access ()
virtual PetscErrorCode	end_pointwise_access ()
virtual PetscErrorCode	temp_time_series (int i, int j, int N, PetscReal ts, PetscReal values)
	Sets a pre-allocated N-element array "values" to the time-series of near-surface air temperature (degrees Kelvin) at the point i,j on the grid. Times (in years) are specified in ts. NB! Has to be surrounded by begin_pointwise_access() and end_pointwise_access().
virtual PetscErrorCode	temp_snapshot (PetscReal t_years, PetscReal dt_years, IceModelVec2S &result)
	Sets result to a snapshot of temperature for the interval (t_years, dt_years).
Protected Attributes
PetscScalar	snow_temp_july_day
string	reference
string	snowprecip_filename
IceModelVec2S	temp_ma
IceModelVec2S	temp_mj
IceModelVec2S	snowprecip

Detailed Description

A class containing an incomplete implementation of an atmosphere model based on a temperature parameterization using mean annual and mean July (mean summer) temperatures and a cosine yearly cycle. Uses a stored (constant in time) precipitation field.

Definition at line 91 of file PISMAtmosphere.hh.

Constructor & Destructor Documentation

PAYearlyCycle	(	IceGrid &	g,
		const NCConfigVariable &	conf
	)

Definition at line 93 of file PISMAtmosphere.hh.

Member Function Documentation

PetscErrorCode begin_pointwise_access ( ) [virtual]

Implements PISMAtmosphereModel.

Definition at line 214 of file PAYearlyCycle.cc.

References IceModelVec.begin_access(), temp_ma, and temp_mj.

PetscErrorCode end_pointwise_access ( ) [virtual]

Implements PISMAtmosphereModel.

Definition at line 223 of file PAYearlyCycle.cc.

References IceModelVec.end_access(), temp_ma, and temp_mj.

PetscErrorCode init ( PISMVars & vars ) [virtual]

Allocates memory and reads in the snow precipitaion data.

Implements PISMComponent.

Reimplemented in PA_SeaRISE_Greenland, and PA_EISMINT_Greenland.

Definition at line 23 of file PAYearlyCycle.cc.

References IceGrid.com, PISMComponent.config, IceModelVec2S.create(), PISMComponent.find_pism_input(), NCConfigVariable.get(), PISMComponent.grid, IceModelVec.read(), reference, IceModelVec.regrid(), IceModelVec.set_attr(), IceModelVec.set_attrs(), IceModelVec.set_glaciological_units(), snow_temp_july_day, snowprecip, snowprecip_filename, temp_ma, temp_mj, IceModelVec.time_independent, verbPrintf(), and IceModelVec.write_in_glaciological_units.

PetscErrorCode mean_annual_temp	(	PetscReal	t_years,
		PetscReal	dt_years,
		IceModelVec2S &	result
	)			`[virtual]`

Copies the stored mean annual near-surface air temperature field into result.

Implements PISMAtmosphereModel.

Definition at line 160 of file PAYearlyCycle.cc.

References IceModelVec.copy_to(), reference, IceModelVec.set_attr(), temp_ma, and update().

PetscErrorCode mean_precip	(	PetscReal	t_years,
		PetscReal	dt_years,
		IceModelVec2S &	result
	)			`[virtual]`

Copies the stored snow precipitation field into result.

Implements PISMAtmosphereModel.

Reimplemented in PA_SeaRISE_Greenland.

Definition at line 145 of file PAYearlyCycle.cc.

References IceModelVec.copy_to(), IceModelVec.set_attr(), snowprecip, snowprecip_filename, and update().

PetscErrorCode temp_snapshot	(	PetscReal	t_years,
		PetscReal	dt_years,
		IceModelVec2S &	result
	)			`[virtual]`

Sets result to a snapshot of temperature for the interval (t_years, dt_years).

Implements PISMAtmosphereModel.

Definition at line 189 of file PAYearlyCycle.cc.

References IceModelVec.add(), PISMComponent.config, NCConfigVariable.get(), pi, reference, IceModelVec.scale(), secpera, IceModelVec.set_attr(), temp_ma, temp_mj, and update().

Referenced by write_diagnostic_fields(), and write_fields().

PetscErrorCode temp_time_series	(	int	i,
		int	j,
		int	N,
		PetscReal *	ts,
		PetscReal *	values
	)			`[virtual]`

Sets a pre-allocated N-element array "values" to the time-series of near-surface air temperature (degrees Kelvin) at the point i,j on the grid. Times (in years) are specified in ts. NB! Has to be surrounded by begin_pointwise_access() and end_pointwise_access().

Implements PISMAtmosphereModel.

Definition at line 173 of file PAYearlyCycle.cc.

References pi, secpera, snow_temp_july_day, temp_ma, and temp_mj.