Model:ThawLake1D

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ThawLake1D

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as Model type Single Model part of larger framework Note on status model Date note status model Incorporated models or components: Spatial dimensions 1D Spatial extent Point-Based, Watershed-Scale Model domain Terrestrial, Hydrology, Cryosphere One-line model description 1-D numerical model of permafrost and subsidence processes. Extended model description This model a 1-D numerical model of permafrost and subsidence processes. It aims to investigate the subsurface thermal impact of thaw lakes of various depths, and to evaluate how this impact might change in a warming climate. Keywords: permafrost, thermal, subsurface, thaw lake, talik, Name Nora Matell Type of contact Model developer Institute / Organization INSTAAR Postal address 1 1560 30th street Postal address 2 Town / City Boulder Postal code 80303 State Colorado Country United States Email address nlmatell@gmail.com Phone Fax Name Irina Overeem Type of contact Model developer Institute / Organization INSTAAR Postal address 1 1560 30th street Postal address 2 Town / City Boulder Postal code State Colorado Country United States Email address Irina.overeem@colorado.edu Phone 303-4926631 Fax Supported platforms Mac OS Other platform Programming language Matlab Other program language Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 2009 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 Source code availability (Or provide future intension) Through CSDMS repository Source web address Source csdms web address https://github.com/csdms-contrib/thawlake1d Program license type GPL v2 Program license type other Memory requirements Typical run time 2 hrs for 1000 year simulation Describe input parameters Requires an input file called: radin_dailyavg.mat This specifies the daily average incoming radiation. Input format Other input format Describe output parameters temperature time series at variable depths into the subsurface in deg C lake depth in m ice thickness in m Output format Other output format matlab plots and variables Pre-processing software needed? No Describe pre-processing software Post-processing software needed? Yes Describe post-processing software Matlab Visualization software needed? Yes If above answer is yes Matlab Other visualization software Describe processes represented by the model ThawLake1D Model couples a permafrost thermal model, a lake ice model and a subsidence model. It models heat conductio through a lake-permafrost system, evaluating temperature with depth. Describe key physical parameters and equations - permafrost thermal model: calculates thermal condutivity and specific heat capacity - lake ice model: conduction of heat within water depending on incoming solar radiation - subsiidence model: melted permafrost cells with excess ice are subsided by the excess ice content. A talik can form under a lake Describe length scale and resolution constraints 1D Uppermost 10 m has high resolution gridcells (0.05m). Below 10 m to 500 m depth, grid cells are coarser (1m). Describe time scale and resolution constraints Simulations are run at daily time step Total simulation duration is typically over 100's of years. Describe any numerical limitations and issues Describe available calibration data sets Model is designed and calibrated for Alaska Coastal Plain. We calibrated the model against temperature data in the subsurface from the Drew point, AK, USGS meteorological station. Upload calibration data sets if available: Describe available test data sets Upload test data sets if available: Describe ideal data for testing Do you have current or future plans for collaborating with other researchers? Yes, the project is ongoing at CU Boulder and with USGS partners Is there a manual available? No Upload manual if available: Model website if any Model forum / discussion board Comments This part will be filled out by CSDMS staff OpenMI compliant No but possible BMI compliant No but possible WMT component No not possible PyMT component Is this a data component Can be coupled with:

Model info Authors Nora Matell Overeem Source code View in CSDMS GitHub repository Model citations Nr. of publications: 1 Total citations: 20 h-index: 1 m-quotient: 0.09 QR-code Link to this page Other models by author Lake-Permafrost with Subsidence ThawLake1D

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Nr. of publications:	1
Total citations:	20
h-index:	1
m-quotient:	0.09

Featured publication(s)	Year	Model described	Type of Reference	Citations
Matell, N.; Anderson, R.S.; Overeem, I.; Wobus, C.; Urban, F.E.; Clow, G.D.; 2013. Modeling the subsurface thermal impact of Arctic thaw lakes in a warming climate. Computers & Geosciences, 53, 69–79. 10.1016/j.cageo.2011.08.028 (View/edit entry)	2013	ThawLake1D	Model overview	20
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