oggm.tasks.apparent_mb_from_any_mb¶

oggm.tasks.apparent_mb_from_any_mb(gdir, mb_model=None, mb_years=None)[source]¶

Compute apparent mb from an arbitrary mass balance profile.

This searches for a mass balance residual to add to the mass balance profile so that the average specific MB is zero.

Parameters

gdiroggm.GlacierDirectory: the glacier directory to process
mb_modeloggm.core.massbalance.MassBalanceModel: the mass balance model to use - if None, will use the default OGGM one.
mb_yearsarray: the array of years from which you want to average the MB for (for mb_model only). Default is to pick from the reference geodetic MB period, i.e. PARAMS[‘geodetic_mb_period’]. It does not matter much, but it should be a period long enough to have a representative MB gradient.

Notes

Files written to the glacier directory:

inversion_flowlines.pkl: A “better” version of the Centerlines, now on a regular spacing i.e., not on the gridded (i, j) indices. The tails of the tributaries are cut out to make more realistic junctions. They are now “1.5D” i.e., with a width.