oggm-edu package documentation

Here follows a list of the oggm-edu classes and their functionality. The best way to learn is to navigate between this static documentation and the rendered notebooks or the interactive version on MyBinder!

GlacierBed

GlacierBed([top, bottom, width, altitudes, ...])	The glacier bed used to construct a oggm_edu.Glacier.
GlacierBed.plot()	Plot the bed

GlacierBed example

In [1]: from oggm_edu import GlacierBed

In [2]: bed = GlacierBed(top=3400, bottom=1500, width=300)

In [3]: bed.plot();

MassBalance

MassBalance(ela, gradient[, breakpoints, ...])	Oggm Edu mass balance, used to construct the oggm_edu.Glacier.
MassBalance.reset()	Reset the mass balance to initial state.
MassBalance.get_monthly_mb(heights[, year])	Calculate the monthly mass balance for the glacier.
MassBalance.get_annual_mb(heights[, year])	Get the annual mass balance.
MassBalance.gradient	Mass balance altitude gradient, mm/m.
MassBalance.ela	Altitude of the equilibrium line altitude (m).
MassBalance.temp_bias	Current temperature bias applied to the mass balance (unit: °C)

MassBalance example

In [4]: from oggm_edu import MassBalance

In [5]: mass_balance = MassBalance(ela=3000, gradient=4)

In [6]: mass_balance
Out[6]: 
Glacier mass balance 
ELA [m]: 3000 
Original ELA [m]: 3000 
Temperature bias [C]: 0 
Gradient [mm/m/yr]: [4] 

Glacier

Glacier(bed, mass_balance)

Provides the user with an easy way to create and perform experiments on simulated glaciers.

Glacier methods

Glacier.reset()	Reset the glacier to initial state.
Glacier.copy()	Return a copy of the glacier.
Glacier.progress_to_year(year)	Progress the glacier to year n.
Glacier.progress_to_equilibrium([years, t_rate])	Progress the glacier to equilibrium.
Glacier.plot([axes, title_number])	Plot the current state of the glacier.
Glacier.plot_mass_balance()	Plot the mass balance profile of the glacier.
Glacier.plot_history([show_bias, window, ...])	Plot the history of the glacier.
Glacier.plot_state_history([interval, eq_states])	Plot the state history of the glacier (thicknesses) at specified intervals.
Glacier.add_temperature_bias(bias, duration)	Add a gradual temperature bias to the future mass balance of the glacier.

Glacier attributes

Glacier.ela	Expose the mass balance ela for the glacier.
Glacier.mb_gradient	Expose the mass balance gradient.
Glacier.mass_balance	Glacier mass balance.
Glacier.annual_mass_balance	The annual mass balance at each grid point of the glacier.
Glacier.specific_mass_balance	The specific mass balance of the glacier [m w.e.
Glacier.age	Set the age of the glacier.
Glacier.history	The history of the glacier.
Glacier.state_history	The state history of the glacier, i.e. geometrical changes over time.
Glacier.creep	Set the value for the creep parameter A in Glens equation.
Glacier.basal_sliding	Set the sliding parameter of the glacier
Glacier.eq_states	Glacier equilibrium states.
Glacier.response_time	The response time of the glacier.
Glacier.current_state	For advanced users: get access to the current OGGM Flowline object.

Glacier example

In [7]: from oggm_edu import Glacier

In [8]: glacier = Glacier(bed=bed, mass_balance=mass_balance)

In [9]: glacier.progress_to_equilibrium()

In [10]: glacier.plot();

In [11]: glacier.plot_history();

SurgingGlacier

SurgingGlacier([bed, mass_balance])	A surging glacier.
SurgingGlacier.reset()	Reset the state of the surging glacier.
SurgingGlacier.progress_to_year(year)	Progress the surging glacier to specified year.
SurgingGlacier.plot_history()	Plot the history of the surging glacier.
SurgingGlacier.normal_years	Number of years that the glacier progress without surging.
SurgingGlacier.surging_years	Number of years that the glacier progress during surges.
SurgingGlacier.basal_sliding_surge

GlacierCollection

GlacierCollection([glacier_list])

This is an object used to store multiple glaciers.

GlacierCollection methods

GlacierCollection.reset()	Reset all glaciers in the collection
GlacierCollection.fill(glacier, n[, ...])	Fill the collection with a desired number of glaciers.
GlacierCollection.add(glacier)	Adds one or more glaciers to the collection.
GlacierCollection.change_attributes(...)	Change the attribute(s) of the glaciers in the collection.
GlacierCollection.progress_to_year(year)	Progress the glaciers within the collection to the specified year.
GlacierCollection.progress_to_equilibrium([...])	Progress the glaciers to equilibrium.
GlacierCollection.plot()	Plot the glaciers in the collection to compare them.
GlacierCollection.plot_side_by_side()	Plot the collection but side by side.
GlacierCollection.plot_history()	Plot the histories of the collection.
GlacierCollection.plot_mass_balance()	Plot the mass balance(s) for the glaciers in the collection.

GlacierCollection attributes

GlacierCollection.glaciers	Glaciers stored in the collection
GlacierCollection.annual_mass_balance	Glaciers mass balances

GlacierCollection example

In [12]: from oggm_edu import GlacierCollection

In [13]: wide_narrow_bed = GlacierBed(altitudes=[3400, 2800, 1500],
   ....:                              widths=[600, 300, 300])
   ....: 

In [14]: wide_narrow_glacier = Glacier(bed=wide_narrow_bed,
   ....:                               mass_balance=mass_balance)
   ....: 

In [15]: collection = GlacierCollection()

In [16]: collection.add([glacier, wide_narrow_glacier])

In [17]: collection.progress_to_year(600)

In [18]: collection.plot()