Model:Gc2d: Difference between revisions
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==Introduction== | |||
[[image:gc2d.jpg| border|right|300px ]] | [[image:gc2d.jpg| border|right|300px ]] | ||
''gc2d'' a two-dimensional finite difference numerical model that simulates the formation and evolution of temperate valley glaciers on a two-dimensional topographic surface with a specified meteorological setting. Driven by a time series of 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. A number of other authors have employed one- and two-dimensional models based on similar sets of equations. However, ''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. In addition, the framework of this model permits the inclusion of discrete processes that modify the ice distribution, such as avalanching on steep terrain. 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. | ''gc2d'' a two-dimensional finite difference numerical model that simulates the formation and evolution of temperate valley glaciers on a two-dimensional topographic surface with a specified meteorological setting. Driven by a time series of 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. A number of other authors have employed one- and two-dimensional models based on similar sets of equations. However, ''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. In addition, the framework of this model permits the inclusion of discrete processes that modify the ice distribution, such as avalanching on steep terrain. 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. | ||
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<ref name=kessler>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. </ref>. | <ref name=kessler>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. </ref>. | ||
=== References === | |||
<references/> | <references/> | ||
== History == | |||
== Issues == | |||
== Help == | |||
== Input Files == | |||
== Output Files == | |||
== Download == | |||
{{Download Model|gc2d}} | {{Download Model|gc2d}} | ||
== Source == | |||
=== Command-Line Access === | |||
If you plan to make changes, use this command to check out the code as yourself using HTTPS: | If you plan to make changes, use this command to check out the code as yourself using HTTPS: | ||
< | <syntaxhighlight lang=bash> | ||
# Project members authenticate over HTTPS to allow committing changes. | # Project members authenticate over HTTPS to allow committing changes. | ||
svn checkout https://csdms.colorado.edu/svn/gc2d | svn checkout https://csdms.colorado.edu/svn/gc2d | ||
</ | </syntaxhighlight> | ||
When prompted, enter your CSDMS Subversion password. | When prompted, enter your CSDMS Subversion password. | ||
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To obtain a CSDMS Subversion account or to become a member of this project, please email [mailto:csdms@colorado.edu csdms@colorado.edu]. | To obtain a CSDMS Subversion account or to become a member of this project, please email [mailto:csdms@colorado.edu csdms@colorado.edu]. | ||
=== GUI and IDE Access === | |||
This project's Subversion repository may be accessed using many different client programs and plug-ins. See your client's documentation for more information. | This project's Subversion repository may be accessed using many different client programs and plug-ins. See your client's documentation for more information. | ||
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[https://csdms.colorado.edu/svn/gc2d https://csdms.colorado.edu/svn/gc2d] | [https://csdms.colorado.edu/svn/gc2d https://csdms.colorado.edu/svn/gc2d] | ||
=== Subversion Help === | |||
For help on how to use Subversion, an excellent manual is available online at [http://svnbook.red-bean.com/ http://svnbook.red-bean.com/] | For help on how to use Subversion, an excellent manual is available online at [http://svnbook.red-bean.com/ http://svnbook.red-bean.com/] | ||
Revision as of 08:15, 29 September 2009
Contact
| Name | Mark Kessler |
| Type of contact | Model developer |
| Institute / Organization | University of Colorado |
| Postal address 1 | 1560 30th street |
| Postal address 2 | |
| Town / City | Boulder |
| Postal code | 80305 |
| State | Colorado |
| Country | USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Country" property. |
| Email address | mark.kessler@colorado.edu |
| Phone | |
| Fax |
| Name | Eric Hutton |
| Type of contact | Technical contact |
| Institute / Organization | CSDMS, INSTAAR, University of Colorado |
| Postal address 1 | 1560 30th street |
| Postal address 2 | |
| Town / City | Boulder |
| Postal code | 80305 |
| State | Colorado |
| Country | USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Additional country" property. |
| Email address | huttone@colorado.edu |
| Phone | |
| Fax |
Gc2d
Metadata
Summary
Technical specs
In/Output
Process
Testing
Other
Introduction gc2d a two-dimensional finite difference numerical model that simulates the formation and evolution of temperate valley glaciers on a two-dimensional topographic surface with a specified meteorological setting. Driven by a time series of 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. A number of other authors have employed one- and two-dimensional models based on similar sets of equations. However, 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. In addition, the framework of this model permits the inclusion of discrete processes that modify the ice distribution, such as avalanching on steep terrain. 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. The above description is taken almost verbatim from Kessler et al. (2006) [1]. References
HistoryIssuesHelpInput FilesOutput FilesDownloadSourceCommand-Line AccessIf you plan to make changes, use this command to check out the code as yourself using HTTPS: # Project members authenticate over HTTPS to allow committing changes.
svn checkout https://csdms.colorado.edu/svn/gc2d
When prompted, enter your CSDMS Subversion password. Non-members may only check out a read-only working copy of the project source. To obtain a CSDMS Subversion account or to become a member of this project, please email csdms@colorado.edu. GUI and IDE AccessThis project's Subversion repository may be accessed using many different client programs and plug-ins. See your client's documentation for more information. https://csdms.colorado.edu/svn/gc2d Subversion HelpFor help on how to use Subversion, an excellent manual is available online at http://svnbook.red-bean.com/ |
