oggm.core.massbalance.MultipleFlowlineMassBalance

class oggm.core.massbalance.MultipleFlowlineMassBalance(gdir, fls=None, mu_star=None, mb_model_class=<class 'oggm.core.massbalance.PastMassBalance'>, use_inversion_flowlines=False, input_filesuffix='', bias=None, **kwargs)[source]

Handle mass-balance at the glacier level instead of flowline level.

Convenience class doing not much more than wrapping a list of mass-balance models, one for each flowline.

This is useful for real-case studies, where each flowline might have a different mu*.

Attributes
flslist

list of flowline objects

mb_modelslist

list of mass-balance objects

__init__(self, gdir, fls=None, mu_star=None, mb_model_class=<class 'oggm.core.massbalance.PastMassBalance'>, use_inversion_flowlines=False, input_filesuffix='', bias=None, **kwargs)[source]

Initialize.

Parameters
gdirGlacierDirectory

the glacier directory

mu_starfloat or list of floats, optional

set to the alternative value of mu* you want to use (the default is to use the calibrated value). Give a list of values for flowline-specific mu*

flslist, optional

list of flowline objects to use (defaults to ‘model_flowlines’, and if not available, to ‘inversion_flowlines’)

mb_model_classclass, optional

the mass-balance model to use (e.g. PastMassBalance, ConstantMassBalance…)

use_inversion_flowlines: bool, optional

if True ‘inversion_flowlines’ instead of ‘model_flowlines’ will be used.

input_filesuffixstr

the file suffix of the input climate file

biasfloat, optional

set to the alternative value of the calibration bias [mm we yr-1] you want to use (the default is to use the calibrated value) Note that this bias is substracted from the computed MB. Indeed: BIAS = MODEL_MB - REFERENCE_MB.

kwargskwargs to pass to mb_model_class

Methods

__init__(self, gdir[, fls, mu_star, …])

Initialize.

get_annual_mb(self, heights[, year, fl_id])

Like self.get_monthly_mb(), but for annual MB.

get_annual_mb_on_flowlines(self[, fls, year])

Get the MB on all points of the glacier at once.

get_ela(self[, year])

Compute the equilibrium line altitude for this year

get_monthly_mb(self, heights[, year, fl_id])

Monthly mass-balance at given altitude(s) for a moment in time.

get_specific_mb(self[, heights, widths, …])

Specific mb for this year and a specific glacier geometry.

Attributes

bias

Residual bias to apply to the original series.

prcp_bias

Precipitation factor to apply to the original series.

temp_bias

Temperature bias to add to the original series.