Model help:Gc2d

Gc2d

GC2D simulates glacier evolution. The component simulates the formation and evolution of temperate valley glaciers or ice sheets on a two-dimensional topographic surface as driven by a specified meteorological setting.

Model introduction

gc2d is a two-dimensional finite difference numerical model that is driven by a calculations of glacier mass balance (snow precipitation - melt rate). The model calculates ice surface elevations above a two-dimensional terrain by solving equations for ice flux and mass conservation using explicit methods.
The present component is a simplified version of the original Gc2d model, it focuses on the interaction with a hydrological model, and thus generates meltwater to a river system.
gc2d integrates glacier and climate simulation components explicitly, and thus has the unique ability to simulate feedbacks between the changing ice surface and the climate forcing.
The efficiency of this model allows simulation of glacial evolution over millennial timescales at spatial scales that resolve valley glaciers. Finally, from a computational standpoint, the simplicity of this model permits the investigation of significant regions of parameter space, allowing us to determine the effect of new processes or altered algorithms for them.

Model parameters

First tab header

Second tab header

Etc. tab header

Parameter	Description	Unit
First parameter	Description parameter	[Units]

Parameter	Description	Unit
First parameter	Description parameter	[Units]

Uses ports

This will be something that the CSDMS facility will add

Provides ports

This will be something that the CSDMS facility will add

Main equations

A list of the key equations. HTML format is supported; latex format will be supported in the future

Notes

Any notes, comments, you want to share with the user

Numerical scheme

Examples

An example run with input parameters, BLD files, as well as a figure / movie of the output

Follow the next steps to include images / movies of simulations:

• Upload file: http://csdms.colorado.edu/wiki/Special:Upload
• Create link to the file on your page: [[Image:<file name>]].

See also: Help:Images or Help:Movies

Developer(s)

Original development by Mark Kessler, the component in the CMT as of November 2010, is simplified Python version (called Gc2dV0) as revised by Scott Peckham.

References

• Paterson, W.S.B., 1994. The Physics of Glaciers. 3rd edition. Elsevier Science, UK.

• MacGregor, K.R., Anderson, R.S., Anderson, S.P., Waddington, E.D., 2000. Numerical Simulations of Glacial-Valley Longitudinal Profile Evolution. Geology, 28, 11,1031-1034.

• Kessler, M.A., R.S. Anderson, and G.S. Stock, 2006. Modeling topographic and climatic control of east-west asymmetry in Sierra Nevada Glacier length during the Last Glacial Maximum, J. Geophys. Res., 111, F2, F02002, doi:10.1029/2005JF000365.

• Kessler, M.A., Anderson, R.S., Briner, J.P. 2008. Fjord insertion into continental margins driven by topographic steering of ice. Nature Geoscience 1, 365-369 (11 May 2008) doi:10.1038/ngeo201 Letter

Links

Any link, eg. to the model questionnaire, etc.