Model:SPARROW: Difference between revisions

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SPARROW

Metadata

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

Spatial dimensions	2D
Spatial extent	Continental, Regional-Scale, Landscape-Scale, Watershed-Scale
Model domain
One-line model description	The SPARROW Surface Water-Quality Model
Extended model description	SPARROW (SPAtially Referenced Regressions On Watershed attributes) is a watershed modeling technique for relating water-quality measurements made at a network of monitoring stations to attributes of the watersheds containing the stations. The core of the model consists of a nonlinear regression equation describing the non-conservative transport of contaminants from point and diffuse sources on land to rivers and through the stream and river network. The model predicts contaminant flux, concentration, and yield in streams and has been used to evaluate alternative hypotheses about the important contaminant sources and watershed properties that control transport over large spatial scales.

Keywords:	biogeochemistry, water quality,

Name	Richard Alexander
Type of contact	Model developer
Institute / Organization	USGS, NAWQA Hydrologic Systems Team
Postal address 1	12201 Sunrise Valley Drive, MS 413
Postal address 2
Town / City	Reston
Postal code	20192
State	Virginia
Country	USA"USA" is not in the list (Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina, Armenia, Australia, Austria, ...) of allowed values for the "Country" property.
Email address	ralex@usgs.gov
Phone	703-648-6869
Fax

Name	Steve Preston
Type of contact	Model developer
Institute / Organization
Postal address 1
Postal address 2
Town / City
Postal code
State
Country	United States
Email address	spreston@usgs.gov
Phone
Fax

Name	Gregory Schwarz
Type of contact
Institute / Organization
Postal address 1
Postal address 2
Town / City
Postal code
State
Country	United States
Email address	gschwarz@usgs.gov
Phone
Fax

Name	Richard Smith
Type of contact
Institute / Organization
Postal address 1
Postal address 2
Town / City
Postal code
State
Country	United States
Email address	rsmith1@usgs.gov
Phone
Fax

Supported platforms	Windows
Other platform
Programming language
Other program language	SAS Macro Language, SAS IML
Code optimized	Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development	1992
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/nawqa/sparrow/
Source csdms web address
Program license type	Other
Program license type other	NOT SURE
Memory requirements	--
Typical run time	--

Describe input parameters	SPARROW modeling requires the integration of many types of geospatial data for use as explanatory variables which are considered as either constituent sources or delivery factors. Sources might include certain land types such as urban area, or known contaminant sources such as sewage treatment plants. Delivery terms can include any basin characteristic that may be associated with natural attenuation. For example, denitrification is often associated with certain soil characteristics and the spatial pattern of those soil characteristics is often related to that of constituent loads. In some cases delivery terms might also be associated with enhanced delivery. For example, high basin slope might cause more rapid flows which could increase the delivery of constituents. Delivery is also influenced by the water time of travel in streams, which can be estimated from published USGS time-of-travel studies (e.g., Reed and Stuckey, 2001).
Input format	ASCII, Binary
Other input format
Describe output parameters	SPARROW is designed to describe the spatial patterns in water quality and the factors that affect it. SPARROW models are developed using mass balance constraints to quantify the relation between stream constituent load (the mass of the constituent being transported by the stream) and the sources and losses of mass in watersheds. Thus the models are inherently designed to predict load (mass per time) for all stream reaches in the modeling region. However, the predictions of stream load can be modified to provide a variety of water-quality metrics that can support various types of assessments. The SPARROW prediction metrics include constituent yields, concentrations, and source contributions to stream loads: Constituent yields Constituent concentrations Source contributions to stream loads
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
Upload calibration data sets if available:
Describe available test data sets
Upload test data sets if available:
Describe ideal data for testing

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

Is there a manual available?	Yes
Upload manual if available:
Model website if any	http://water.usgs.gov/nawqa/sparrow/
Model forum / discussion board	--

Comments	This form is filled out by Albert Kettner, based on the SPARROW website

This part will be filled out by CSDMS staff

OpenMI compliant	No not possible
BMI compliant	No not possible
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
Is this a data component

Can be coupled with:

Model info

Authors

Richard Alexander

Preston, Schwarz, Smith

Source code

Go to external source code site

Model citations

Nr. of publications:	36
Total citations:	3726
h-index:	23
m-quotient:	0.79

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SPARROW

Introduction

History

References

Source code

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Publication(s)	Model described	Citations

Overview and general

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Publication(s)	Model described	Citations

Applications

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Related theory and data

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Input Files

Output Files

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