Model:OTIS

OTIS

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Also known as
Model type	Single
Model part of larger framework
Note on status model
Date note status model

Spatial dimensions	1D
Spatial extent	Watershed-Scale, Reach-Scale
Model domain
One-line model description	One-Dimensional Transport with Inflow and Storage (OTIS): A Solute Transport Model for Streams and Rivers
Extended model description	One-Dimensional Transport with Inflow and Storage (OTIS): A Solute Transport Model for Streams and Rivers OTIS is a mathematical simulation model used to characterize the fate and transport of water-borne solutes in streams and rivers. The governing equation underlying the model is the advection-dispersion equation with additional terms to account for transient storage, lateral inflow, first-order decay, and sorption. This equation and the associated equations describing transient storage and sorption are solved using a Crank-Nicolson finite-difference solution. OTIS may be used in conjunction with data from field-scale tracer experiments to quantify the hydrologic parameters affecting solute transport. This application typically involves a trial-and-error approach wherein parameter estimates are adjusted to obtain an acceptable match between simulated and observed tracer concentrations. Additional applications include analyses of nonconservative solutes that are subject to sorption processes or first-order decay. OTIS-P, a modified version of OTIS, couples the solution of the governing equation with a nonlinear regression package. OTIS-P determines an optimal set of parameter estimates that minimize the squared differences between the simulated and observed concentrations, thereby automating the parameter estimation process.

Keywords:	biogeochemistry, water quality,

Name	Rob Runkel
Type of contact	Model developer
Institute / Organization	USGS
Postal address 1
Postal address 2
Town / City	Boulder
Postal code	80303
State	Colorado
Country	United States
Email address	runkel@usgs.gov
Phone
Fax

Supported platforms	Unix, Linux, Windows
Other platform
Programming language	Fortran77
Other program language
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	1990
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	As code
Source code availability (Or provide future intension)	Through web repository
Source web address	http://water.usgs.gov/software/OTIS/
Source csdms web address
Program license type	Other
Program license type other	http://water.usgs.gov/software/help/notice/
Memory requirements
Typical run time

Describe input parameters	see user documentation on website
Input format	ASCII
Other input format
Describe output parameters	solute concentrations as a function of time and space at user-defined locations within the modeled stream system
Output format	ASCII
Other output format
Pre-processing software needed?	Yes
Describe pre-processing software	OTIS relies on flat ASCII (text) files for input and output. At present, a graphical user interface for comprehensive management of OTIS input and output is not available. OTIS input files have traditionally been developed on the user's local computer system using a text-based editor. As an alternative, users may fill out the web-based forms available via the Generate Input section of http://water.usgs.gov/software/OTIS/. After providing the required information, users can download the resultant input files and run OTIS in the usual manner.
Post-processing software needed?	Yes
Describe post-processing software	All output is written to flat ASCII files. OTIS output files are usually read into a spreadsheet or graphics program for plotting and analysis.
Visualization software needed?	No
If above answer is yes
Other visualization software

Describe processes represented by the model	Advection, Dispersion, Inflow, and Transient Storage. First-order loss/production, sorption.
Describe key physical parameters and equations	Instream mass transport based on the Advection-Dispersion equation with additional terms to consider inflow, transient storage, and chemical transformation.
Describe length scale and resolution constraints
Describe time scale and resolution constraints
Describe any numerical limitations and issues

Describe available calibration data sets	See user documentation available at website
Upload calibration data sets if available:
Describe available test data sets	See user documentation available at website
Upload test data sets if available:
Describe ideal data for testing	See user documentation available at website

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

Is there a manual available?	Yes
Upload manual if available:	Media:Wrir98-4018.pdf
Model website if any	http://water.usgs.gov/software/OTIS/
Model forum / discussion board

Comments

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OpenMI compliant	No not possible
BMI compliant	Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "BMICompliant" property.
WMT component	Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code CMT compliant or not" property.
PyMT component
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Model info

Authors

Rob Runkel

Source code

Go to external source code site

Model citations

Nr. of publications:	95
Total citations:	6145
h-index:	39
m-quotient:	0.97

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References

Nr. of publications:	95
Total citations:	6145
h-index:	39
m-quotient:	0.97

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Input Files

Output Files