Model:GOLEM

Contact

Name	Greg Tucker
Type of contact	Model developer
Institute / Organization	University of Colorado
Postal address 1	CIRES & Dept. Geological Sciences
Postal address 2	Campus Box 399
Town / City	Boulder
Postal code	80309-0399
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	Gregory.Tucker@colorado.edu
Phone	+1 303 492 6985
Fax	+1 303 492 2606

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GOLEM

Metadata

Summary Also known as Model type Single Model part of larger framework Note on status model Date note status model landscape evolution, Technical specs Supported platforms Unix, Linux, Mac OS Other platform Programming language C Other program language Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 1991 Does model development still take place? Yes If above answer is no, provide end year model development Code development status When did you indicate the 'code development status'? Model availability As code Source code availability (Or provide future intension) Through CSDMS repository Source web address Source csdms web address Program license type GPL v2 Program license type other Memory requirements Variable Typical run time minutes to days In/Output Describe input parameters Standard input parameter files (ascii). For some conditions, also require additional binary file specifying boundary configuration. Input format ASCII, Binary Other input format Describe output parameters Elevation, drainage area, and related gridded information. Output format ASCII Other output format Pre-processing software needed? No Describe pre-processing software Post-processing software needed? No Describe post-processing software Visualization software needed? Yes If above answer is yes IDL, Matlab Other visualization software some visualization scripts for IDL and Matlab available. Process Describe processes represented by the model Runoff, hillslope and channel sediment transport. Describe key physical parameters and equations Key state variables include surface elevation, soil thickness, and discharge. Describe length scale and resolution constraints Has been used on scales from small (few km2) watersheds to sub-continental areas. Describe time scale and resolution constraints Designed for time scales over which topography changes appreciably, which might be years for badlands, up to thousands or millions of years for other landscapes. Describe any numerical limitations and issues Equation set is still and uses robust but relatively inefficient solvers. Recommend testing with coarse grid resolutions (say, 20x20 cells) before attempting larger/finer grids. Testing Describe available calibration data sets Few or none, unfortunately Upload calibration data sets if available: Describe available test data sets -- Upload test data sets if available: Describe ideal data for testing See paper on geomorphic natural experiments by Tucker (in review, 2008) Other Do you have current or future plans for collaborating with other researchers? -- Is there a manual available? Yes Upload manual if available: Model website if any http://geode.colorado.edu/~gtucker/Software/Golem/GolemMain.html Model forum / discussion board Comments GOLEM was written in the 1990s by one of the creators of CHILD. Although it lacks many of the special capabilities of CHILD, it has a simpler, more compact code base (just a single C source file) and uses a raster grid data structure. Download statistics <pbars ytitle=Downloads Title='Monthly Downloads golem' xlabels=true size=900x200 ymax=20 grid=true box=true cubic=true plots=open xformat=number connected=true angle=90 legend> ,Total downloads: 143 2008 - Jan,0 Feb,0 Mar,0 Apr,0 May,0 Jun,0 Jul,0 Aug,0 Sep,0 Oct,0 Nov,0 Dec,0 2009 - Jan,0 Feb,0 Mar,0 Apr,0 May,0 Jun,0 Jul,0 Aug,0 Sep,0 Oct,0 Nov,0 Dec,0 2010 - Jan,0 Feb,0 Mar,0 Apr,0 May,6 Jun,3 Jul,2 Aug,6 Sep,5 Oct,1 Nov,4 Dec,6 2011 - Jan,3 Feb,1 Mar,0 Apr,2 May,3 Jun,1 Jul,3 Aug,2 Sep,1 Oct,2 Nov,4 Dec,1 2012 - Jan,1 Feb,7 Mar,2 Apr,3 May,4 Jun,1 Jul,5 Aug,4 Sep,1 Oct,1 Nov,1 Dec,4 2013 - Jan,0 Feb,4 Mar,1 Apr,5 May,2 Jun,3 Jul,0 Aug,0 Sep,4 Oct,3 Nov,0 Dec,3 2014 - Jan,1 Feb,3 Mar,4 Apr,3 May,3 Jun,2 Jul,2 Aug,0 Sep,5 Oct,1 Nov,3 Dec,1 2015 - Jan,0 Feb,0 Mar,0 Apr,0 May,0 Jun,0 Jul,0 </pbars> Introduction History Papers Issues Help Input Files Output Files Download source code