Model:ParFlow

ParFlow

Model:	ParFlow
Contact person:	Reed Maxwell (Project manager)
Institute:	International Groundwater Modeling Center, Colorado School of Mines
City:	Golden, CO
Country:	USA
Email:	rmaxwell@mines.edu
2nd person involved:	Steven Smith (Model developer)
3rd person involved:	Stefan Kollet (Technical contact)

Model type:	Modular model for the terrestrial domain.
Description:	ParFlow is an open-source, object-oriented, parallel watershed flow model. It includes fully-integrated overland flow, the ability to simulate complex topography, geology and heterogeneity and coupled land-surface processes including the land-energy budget, biogeochemistry and snow (via CLM). It is multi-platform and runs with a common I/O structure from laptop to supercomputer. ParFlow is the result of a long, multi-institutional development history and is now a collaborative effort between CSM, LLNL, UniBonn and UCB. ParFlow has been coupled to the mesoscale, meteorological code ARPS and the NCAR code WRF.

Supported platforms:	UNIX, Linux, Mac OSX
Programming language:	Fortran90, C
Model development started at:	1994 and development still takes place.
To what degree will the model become available:	Source code, as executable & teaching tool
Current license type:	LGPL
Memory requirements:	depends on problem size
Typical run time:	depends on problem size

Input parameters:	TCL script, many physical and numerical parameters needed.
Input format:	ASCII, Binary
Output parameters:	Many: pressure, saturation, temperature, energy fluxes, flow, etc.
Output format:	ASCII, Binary
Post-processing software (if needed):	Yes, ParFlow comes with a robust, integrated toolkit (pftools) that provides a wide range of postprocessing options.
Visualization software (if needed):	Yes, Matlab & Visit

Processes represented by model:	Saturated subsurface flow. Variably-saturated subsurface flow. Integrated overland flow. Land-energy budget. Shallow heat transport. Bio-geochemistry (plant/water interactions). Correlated, Gaussian random field generators.
Key physical parameters & equations:	Fully described in manual.
Length scale & resolution constraints:	Depends upon application.
Time scale & resolution constraints:	Depends upon application.
Numerical limitations and issues :	Depends only on computer resources.

Available calibration data sets:	ParFlow contains a directory of test cases that may be automated as a check of the code.
Available test data sets:	ParFlow contains a directory of test cases that may be automated as a check of the code
Ideal data for testing:	--

Currently or plans for collaborating with:	Yes, many already in progress.

Key papers of the model:	Ashby S.F. and R.D. Falgout, Nuclear Science and Engineering 124:145-159, 1996 Jones, J.E. and C.S. Woodward, Advances in Water Resources 24:763-774, 2001 Kollet, S.J. and R.M. Maxwell, Advances in Water Resources 29:945-958, 2006 Maxwell, R.M. and N.L. Miller, Journal of Hydrometeorology 6(3):233-247, 2005 Kollet, S.J. and R.M. Maxwell, Water Resources Research 44:W02402, 2008
Is there a manual available:	Yes
Model website if any:	http://inside.mines.edu/~rmaxwell/maxwell_software.shtml

Comments:	--