PAWS
PAWS (Process-based Adaptive Watershed Simulator) is a process-based (or physically-based) watershed model that solves partial differential equations for all flow domains efficiently. The model is coupled with the Community Land Model (CLM, National Center for Atmospheric Research, Boulder, CO) to provide a comprehensive vegetation module. Model documentation is currently being updated and we plan to make the model available to the hydrologic community in the future.
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PPTEST
Push-Pull Tests & PPTEST
PPTEST is a multi-species, radial coordinate reactive tranport model to estimate biogeochemical rates and aquifer physical parameters based on a variety of single-well injection-withdrawl (or push-pull) tests. The code is general and allows the user to simulate microbial processes, arbitrary reaction order kinetics, sorption and reaction lag times to test different hypotheses about chemical and biological processes operating at field sites. The Fortran source code, comparisons with field data and analytical solutions as well as input files and sample output are included in the user manual below. The files can be extracted from the manual by double-clicking on the paper-clip icon in section 5 of the manual (also available as a windows zip file in the second link below). Version 2 of the model can be downloaded using this link: Source code and User's Manual |