A class implementing a temperature-index (positive degree-day) scheme to compute melt and runoff, and thus surface mass balance, from precipitation and air temperature. More...
#include <TemperatureIndex.hh>
Inheritance diagram for pism::surface::TemperatureIndex:Public Member Functions | |
| TemperatureIndex (std::shared_ptr< const Grid > g, std::shared_ptr< atmosphere::AtmosphereModel > input) | |
| virtual | ~TemperatureIndex ()=default |
| const array::Scalar & | firn_depth () const |
| const array::Scalar & | snow_depth () const |
| const array::Scalar & | air_temp_sd () const |
| Public Member Functions inherited from pism::surface::SurfaceModel | |
| SurfaceModel (std::shared_ptr< const Grid > g) | |
| SurfaceModel (std::shared_ptr< const Grid > g, std::shared_ptr< SurfaceModel > input) | |
| SurfaceModel (std::shared_ptr< const Grid > g, std::shared_ptr< atmosphere::AtmosphereModel > atmosphere) | |
| virtual | ~SurfaceModel ()=default |
| void | init (const Geometry &geometry) |
| void | update (const Geometry &geometry, double t, double dt) |
| const array::Scalar & | accumulation () const |
| Returns accumulation. More... | |
| const array::Scalar & | layer_mass () const |
| Returns mass held in the surface layer. More... | |
| const array::Scalar & | layer_thickness () const |
| Returns thickness of the surface layer. Could be used to compute surface elevation as a sum of elevation of the top surface of the ice and surface layer (firn, etc) thickness. More... | |
| const array::Scalar & | liquid_water_fraction () const |
| Returns the liquid water fraction of the ice at the top ice surface. More... | |
| const array::Scalar & | mass_flux () const |
| const array::Scalar & | melt () const |
| Returns melt. More... | |
| const array::Scalar & | runoff () const |
| Returns runoff. More... | |
| const array::Scalar & | temperature () const |
| Public Member Functions inherited from pism::Component | |
| Component (std::shared_ptr< const Grid > grid) | |
| virtual | ~Component ()=default |
| DiagnosticList | diagnostics () const |
| TSDiagnosticList | ts_diagnostics () const |
| std::shared_ptr< const Grid > | grid () const |
| const Time & | time () const |
| const Profiling & | profiling () const |
| void | define_model_state (const File &output) const |
| Define model state variables in an output file. More... | |
| void | write_model_state (const File &output) const |
| Write model state variables to an output file. More... | |
| MaxTimestep | max_timestep (double t) const |
| Reports the maximum time-step the model can take at time t. More... | |
Protected Member Functions | |
| virtual void | init_impl (const Geometry &geometry) |
| virtual void | update_impl (const Geometry &geometry, double t, double dt) |
| virtual MaxTimestep | max_timestep_impl (double t) const |
| virtual void | define_model_state_impl (const File &output) const |
| The default (empty implementation). More... | |
| virtual void | write_model_state_impl (const File &output) const |
| The default (empty implementation). More... | |
| virtual DiagnosticList | diagnostics_impl () const |
| virtual const array::Scalar & | mass_flux_impl () const |
| virtual const array::Scalar & | temperature_impl () const |
| virtual const array::Scalar & | accumulation_impl () const |
| virtual const array::Scalar & | melt_impl () const |
| virtual const array::Scalar & | runoff_impl () const |
| double | compute_next_balance_year_start (double time) |
| Protected Member Functions inherited from pism::surface::SurfaceModel | |
| virtual const array::Scalar & | layer_mass_impl () const |
| virtual const array::Scalar & | layer_thickness_impl () const |
| virtual const array::Scalar & | liquid_water_fraction_impl () const |
| virtual TSDiagnosticList | ts_diagnostics_impl () const |
| void | dummy_accumulation (const array::Scalar &smb, array::Scalar &result) |
| void | dummy_melt (const array::Scalar &smb, array::Scalar &result) |
| void | dummy_runoff (const array::Scalar &smb, array::Scalar &result) |
| Protected Member Functions inherited from pism::Component | |
| void | regrid (const std::string &module_name, array::Array &variable, RegriddingFlag flag=NO_REGRID_WITHOUT_REGRID_VARS) |
Protected Attributes | |
| std::unique_ptr< LocalMassBalance > | m_mbscheme |
| mass balance scheme to use More... | |
| std::unique_ptr< FaustoGrevePDDObject > | m_faustogreve |
| if not NULL then user wanted fausto PDD stuff More... | |
| LocalMassBalance::DegreeDayFactors | m_base_ddf |
| holds degree-day factors in location-independent case More... | |
| double | m_base_pddStdDev |
| K; daily amount of randomness. More... | |
| double | m_next_balance_year_start |
| array::Scalar | m_mass_flux |
| cached surface mass balance rate More... | |
| std::shared_ptr< array::Scalar > | m_temperature |
| array::Scalar | m_firn_depth |
| firn depth More... | |
| array::Scalar | m_snow_depth |
| snow depth (reset once a year) More... | |
| std::shared_ptr< array::Forcing > | m_air_temp_sd |
| standard deviation of the daily variability of the air temperature More... | |
| std::shared_ptr< array::Scalar > | m_accumulation |
| total accumulation during the last time step More... | |
| std::shared_ptr< array::Scalar > | m_melt |
| total melt during the last time step More... | |
| std::shared_ptr< array::Scalar > | m_runoff |
| total runoff during the last time step More... | |
| bool | m_sd_use_param |
| bool | m_sd_file_set |
| double | m_sd_param_a |
| double | m_sd_param_b |
| Protected Attributes inherited from pism::surface::SurfaceModel | |
| std::shared_ptr< array::Scalar > | m_liquid_water_fraction |
| std::shared_ptr< array::Scalar > | m_layer_mass |
| std::shared_ptr< array::Scalar > | m_layer_thickness |
| std::shared_ptr< array::Scalar > | m_accumulation |
| std::shared_ptr< array::Scalar > | m_melt |
| std::shared_ptr< array::Scalar > | m_runoff |
| std::shared_ptr< SurfaceModel > | m_input_model |
| std::shared_ptr< atmosphere::AtmosphereModel > | m_atmosphere |
| Protected Attributes inherited from pism::Component | |
| const std::shared_ptr< const Grid > | m_grid |
| grid used by this component More... | |
| const Config::ConstPtr | m_config |
| configuration database used by this component More... | |
| const units::System::Ptr | m_sys |
| unit system used by this component More... | |
| const Logger::ConstPtr | m_log |
| logger (for easy access) More... | |
Additional Inherited Members | |
| Protected Types inherited from pism::Component | |
| enum | RegriddingFlag { REGRID_WITHOUT_REGRID_VARS , NO_REGRID_WITHOUT_REGRID_VARS } |
This flag determines whether a variable is read from the -regrid_file file even if it is not listed among variables in -regrid_vars. More... | |
| Static Protected Member Functions inherited from pism::surface::SurfaceModel | |
| static std::shared_ptr< array::Scalar > | allocate_layer_mass (std::shared_ptr< const Grid > grid) |
| static std::shared_ptr< array::Scalar > | allocate_layer_thickness (std::shared_ptr< const Grid > grid) |
| static std::shared_ptr< array::Scalar > | allocate_liquid_water_fraction (std::shared_ptr< const Grid > grid) |
| static std::shared_ptr< array::Scalar > | allocate_mass_flux (std::shared_ptr< const Grid > grid) |
| static std::shared_ptr< array::Scalar > | allocate_temperature (std::shared_ptr< const Grid > grid) |
| static std::shared_ptr< array::Scalar > | allocate_accumulation (std::shared_ptr< const Grid > grid) |
| static std::shared_ptr< array::Scalar > | allocate_melt (std::shared_ptr< const Grid > grid) |
| static std::shared_ptr< array::Scalar > | allocate_runoff (std::shared_ptr< const Grid > grid) |
Detailed Description
A class implementing a temperature-index (positive degree-day) scheme to compute melt and runoff, and thus surface mass balance, from precipitation and air temperature.
Temperature-index schemes are far from perfect as a way of modeling surface mass balance on ice sheets which experience surface melt, but they are known to have reasonable data requirements and to do a good job when tuned appropriately [Hock05].
Definition at line 39 of file TemperatureIndex.hh.
The documentation for this class was generated from the following files:
- src/coupler/surface/TemperatureIndex.hh
- src/coupler/surface/TemperatureIndex.cc
