INSTRUCTIONS FOR RUNNING THE SHAW MODEL (Version 2.3)
https://www.ars.usda.gov/pacific-west-area/boise-id/northwest-watershed-research-center/docs/shaw-model/
https://www.ars.usda.gov/ARSUserFiles/20520500/SHAW/ShawDocumentation.30.pdf
https://www.researchgate.net/publication/262588150_Downward_longwave_radiation_estimates_for_clear-sky_conditions_over_northeast_Brazil
Thank you for your interest in the SHAW Model. I hope you find the model
useful for your particular application. This ReadMe.txt file will hopefully get
you started in using the model. It contains information on running the sample
input files provided with the model and compiling the model for non-DOS
applications.
Files included with this distribution of The Simultaneous Heat and Water
(SHAW) Model include: this "ReadMe.txt" file; an executable image of the SHAW
model (SHAW23.EXE); an error interpreter file for the Lahey FORTRAN compiler,
just in case the program crashes (Lf90.EER); user-interface software
(MODel SHELL, i.e. MODSHELL.EXE; a sample input file for the user interface
(TRIALMOD.MOD); five trial input files for a sample SHAW run (TRIAL.*); and
two directories named "Code" and "Output". The FORTRAN source file for the
SHAW model is located in directory "Code"; output from the trial input files
are located in the directory "Output".
The five sample input files for the model are:
TRIAL.INP -- input file containing list of input/output files
TRIAL.WEA -- input file containing weather data
TRIAL.SIT -- input file containing site characteristics
TRIAL.MOI -- input file containing soil moisture profiles
TRIAL.TMP -- input file containing soil temperature profiles
You can run the SHAW model with or without the user-interface software. The
user interface has restrictions (such as no options for solute transport and no
provisions for changing plant characteristics during the simulation) that are
somewhat limiting. If this is the case, you can use the interface to build the
input files, then alter them as needed.
To run the sample input data set without the user-interface software,
either double-click on the SHAW23.exe file within Windows or execute SHAW23 from
the MS-DOS prompt. Upon executing SHAW23, enter "TRIAL.INP" when prompted for
the file containing the list of input/output files. The trial simulation may
take a few minutes depending on the system you are using. (The trial data set
includes snow, canopy, residue and solutes, so it is likely to run slower than
most applications.) The trial simulation will generate the following files:
OUT.OUT -- output file for general information
TEMP.OUT -- simulated soil temperature profiles
MOIST.OUT -- simulated soil water profiles
ENERGY.OUT -- summary of simulated energy balance at the surface
WATER.OUT -- simulated water balance summary
FROST.OUT -- simulated frost, thaw, and snow depths
For information on specifying other output files that may be generated or on
putting together data sets for your own applications, you are referred to
either the user-interface or the instructions entitled "Input for the SHAW Model
(Version 2.3)". For information on the the user-interface software, see the
instructions entitled "SHAW Interface Documentation".
UPDATES AND NEWS
Watch the SHAW Home Page on the internet for updates and news on the SHAW model.
The address is: http://www.nwrc.ars.usda.gov/Models/SHAW.html. If you do not
have access to the internet, you may request this information at the address
given at the end of this file.
RUN-TIME ERRORS
If for some reason the SHAW model encounters an error, the program will
search for the file Lf90.EER to interpret the error and hopefully give the user
some clue as to what the problem is. If you get a message that it cannot find
this file, make sure it is in a directory where it can be found at the time you
run the model.
COMPILING THE MODEL
If you wish to run the model on a system other than MS-DOS, you will
probably need to compile the program on the particular system you plan to use.
The computer code for the model uses standard Fortran 77 and should be
transferrable to most any system.
ASSISTANCE
If you have questions concerning the model, encounter problems, or need
additional information, please contact:
Gerald N. Flerchinger
USDA - ARS
800 Park Blvd, Suite 105
Boise, Idaho 83712
(208) 422-0716
Email: gflerchi@nwrc.ars.usda.gov