Model:WTM

WTM

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	2D
Spatial extent	Global, Continental, Regional-Scale
Model domain	Terrestrial
One-line model description	Coupled groundwater and dynamic lake modelling
Extended model description	The Water Table Model (WTM) simulates terrestrial water changes over the full range of relevant spatial (watershed to global) and temporal (monthly to millennial) scales. It comprises coupled components to compute dynamic lake and groundwater levels. The groundwater component solves the 2D horizontal groundwater-flow equation by using non-linear equation solvers in the C++ PETSc library. The dynamic lakes component makes use of the Fill-Spill-Merge (FSM) algorithm to move surface water into lakes, where it may evaporate or affect groundwater flow.

Keywords:	Lake levels, groundwater,

Name	Richard Barnes
Type of contact	Technical contact
Institute / Organization	Lawrence Berkeley National Lab
Postal address 1
Postal address 2
Town / City	Berkeley
Postal code
State	California
Country	United States
Email address
Phone
Fax

Supported platforms	Unix, Linux, Mac OS
Other platform
Programming language	C++
Other program language
Code optimized	Multiple Processors
Multiple processors implemented	Distributed memory
Nr of distributed processors
Nr of shared processors
Start year development	2021
Does model development still take place?	Yes
If above answer is no, provide end year model development
Code development status	Active
When did you indicate the 'code development status'?	2024
Model availability	As code
Source code availability (Or provide future intension)	Through web repository
Source web address	https://github.com/KCallaghan/WTM/
Source csdms web address
Program license type	GPL v3
Program license type other
Memory requirements	--
Typical run time	--

Describe input parameters	deltat {Number of seconds per time step, e.g. 315360000 for a 10-year time step} southern_edge {Southern-most latitude of your domain in decimal degrees, e.g. 5} maxiter 500 {How many times GW should run before FSM runs} total_cycles 1000 {how many times FSM should run before completion} infiltration_on 0 {true is 1, false is 0. Only recommend true for high-resolution input data.} fdepth_a 200 {e-folding depth coefficients} fdepth_b 150 {e-folding depth coefficients} fdepth_fmin 2 {e-folding depth coefficients}
Input format	Binary
Other input format
Describe output parameters	The program outputs a text file that provides information on the current minimum and maximum water table elevation, the changes in surface water and groundwater within the past iteration, and the number of iterations passed. The main output is a geoTiff file that supplies the depth to/elevation of the water table. Negative values indicate a water table below the surface, while positive values indicate a water table above the surface (i.e. a lake).
Output format	Binary
Other output format
Pre-processing software needed?	No
Describe pre-processing software
Post-processing software needed?	No
Describe post-processing software
Visualization software needed?	No
If above answer is yes
Other visualization software

Describe processes represented by the model	--
Describe key physical parameters and equations	--
Describe length scale and resolution constraints	--
Describe time scale and resolution constraints	--
Describe any numerical limitations and issues	--

Describe available calibration data sets
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Describe available test data sets
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Describe ideal data for testing

Do you have current or future plans for collaborating with other researchers?

Is there a manual available?	No
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Model website if any
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Model info

Authors

Wickert, Barnes

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