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Questionnaire is filled out by Albert Kettner +
Model developer +
No but possible +
No but possible +
No but possible +
Single Processor +
Creation date"Creation date" is a predefined property that corresponds to the date of the first revision of a subject and is provided by <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
00:24:08, 18 November 2009 +
Too many to mention here +
Too many to mention here. See manual. +
The QUAL2K framework includes the followin … The QUAL2K framework includes the following new elements:</br></br>*Software Environment and Interface. Q2K is implemented within the Microsoft Windows environment. Numerical computations are programmed in Fortran 90. Excel is used as the graphical user interface. All interface operations are programmed in the Microsoft Office macro language: Visual Basic for Applications (VBA). </br>*Model segmentation. Q2E segments the system into river reaches comprised of equally spaced elements. Q2K also divides the system into reaches and elements. However, in contrast to Q2E, the element size for Q2K can vary from reach to reach. In addition, multiple loadings and withdrawals can be input to any element.</br>*Carbonaceous BOD speciation. Q2K uses two forms of carbonaceous BOD to represent organic carbon. These forms are a slowly oxidizing form (slow CBOD) and a rapidly oxidizing form (fast CBOD).</br>*Anoxia. Q2K accommodates anoxia by reducing oxidation reactions to zero at low oxygen levels. In addition, denitrification is modeled as a first-order reaction that becomes pronounced at low oxygen concentrations. </br>*Sediment-water interactions. Sediment-water fluxes of dissolved oxygen and nutrients can be simulated internally rather than being prescribed. That is, oxygen (SOD) and nutrient fluxes are simulated as a function of settling particulate organic matter, reactions within the sediments, and the concentrations of soluble forms in the overlying waters.</br>*Bottom algae. The model explicitly simulates attached bottom algae. These algae have variable stoichiometry.</br>*Light extinction. Light extinction is calculated as a function of algae, detritus and inorganic solids.</br>*pH. Both alkalinity and total inorganic carbon are simulated. The river’s pH is then computed based on these two quantities.</br>*Pathogens. A generic pathogen is simulated. Pathogen removal is determined as a function of temperature, light, and settling.</br>*Reach specific kinetic parameters. Q2K allows you to specify many of the *Weirs and waterfalls. The hydraulics of weirs as well as the effect of weirs and waterfalls on gas transfer are explicitly included.s on gas transfer are explicitly included.
QUAL2K (or Q2K) is a river and stream wate … QUAL2K (or Q2K) is a river and stream water quality model that is intended to represent a modernized version of the QUAL2E (or Q2E) model (Brown and Barnwell 1987). Q2K is similar to Q2E in the following respects:</br>One dimensional. The channel is well-mixed vertically and laterally.</br>* Steady state hydraulics. Non-uniform, steady flow is simulated.</br>* Diurnal heat budget. The heat budget and temperature are simulated as a function of meteorology on a diurnal time scale.</br>* Diurnal water-quality kinetics. All water quality variables are simulated on a diurnal time scale.</br>* Heat and mass inputs. Point and non-point loads and abstractions are simulated.oint loads and abstractions are simulated. +
Steve +
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0.83 +
Terrestrial +
quality +, modeling +, framework +, simulating +, brown and barnwell +, river and stream +, intended to represent +, represent a modernized +, modernized version +, brown +, barnwell +, model +, water quality model +, diurnal +, diurnal time scale +, quality model +, stream water quality +, stream water +, simulated +, biogeochemistry +, water quality + and qual2k +
As code +
Media:Q2KDocv2 11b8.pdf +
Single +
http://www.epa.gov/athens/wwqtsc/html/qual2k.html +
Modification date"Modification date" is a predefined property that corresponds to the date of the last modification of a subject and is provided by <a target="_blank" rel="nofollow noreferrer noopener" class="external text" href="https://www.semantic-mediawiki.org/wiki/Help:Special_properties">Semantic MediaWiki</a>.
02:15:29, 17 September 2020 +
132 +
A Modeling Framework for Simulating River and Stream Water Quality +
200 College Avenue +
02155 +
false +
false +
Visual Basic (VBA), Excel +
Other +
NOT SURE +
Fortran90 +
-- +
Through web repository +
http://www.epa.gov/athens/wwqtsc/html/qual2k.html +
Watershed-Scale +
1987 +
Windows +
Model developer +
