1. Environmental Time Functions & Segment Parameters

2. Environmental Time Functions
Varies Conditions over Simulation Period
Environmental properties with multiple time functions:
Temperature
Water velocity
Light extinction
Time Functions can have their own intervals

3. Segment Parameters Varies Environmental Conditions Spatially
Scales Environmental Conditions for Individual Segments.

4. Working Together
Segment parameters can point to individual time functions
User can specify up to 4 temperature functions.
User can specify segment temperature by point to 1 of the 4

5. Seg 1 Seg 2 Temperature Function 1 Temperature Scale 1
Temperature Time Series used is 1
Temperature Function 2
Temperature Scale 1
Temperature Time Series used is 2
Seg 2

6. EUTRO Module Time Functions
Water temperature (4) (degrees C)
Water velocity (4) (m/sec)
Light intensity (langleys)
Fraction of daylight (fraction)
Wind speed at 10 meters (m/sec)
Light extinction coefficient (5) (per meter)
Ammonia & phosphorus benthic flux (mg/m2-day)
Zooplankton
Ice cover (fraction)
Air Temperature (degrees C)
Reaeration rate constant (per day)

7. EUTRO Module Segment Parameters
Water velocity time function pointer
Water temperature (time function pointer and multiplier)
Reaeration rate multiplier
Incoming solar radiation multiplier
Light extinction (time function pointer and multiplier)
Fraction of light intercepted by canopy (fraction)
Ammonia & phosphorus flux multipliers
Sediment oxygen demand, SOD (g/m2-day)
SOD temperature correction factor
Zooplankton

8. Additional EUTRO Module Parameters
CBOD deoxygenation rate constant scale factors (3)
Tsivoglou reaeration escape coefficient
Dam elevation (m)
Dam pool water quality coefficient
Dam type coefficient
Fraction of bottom area covered by benthic algae

9. SOD - EUTRO Module Parameters – (to be implemented)
Particulate Organic Nitrogen (3 types) mg N/g
Dissolved NH3 (3 types) mg N/L
NO2, mg N/L
NO3, mg N/L
Particulate Organic Phosphorus (3 types), mg P/g
Dissolved PO4, mg P/L
Particulate Organic Carbon (3 types), mg O2/g

10. TOXI Module Time Functions
Water temperature (4) (degrees C)
Water velocity (4) (m/sec)
pH of water column & benthic segments
Normalized light intensity (photolysis option 2)
Wind speed at 10 meters (m/sec)
Bacteria population (Water & Benthos)
Air temperature (degrees C)
Reaeration rate constant (per day)
Chlorophyll-a (mg/L)

11. TOXI Module Segment Parameters
Water velocity time function pointer
Water temperature (time function pointer and multiplier)
Wind speed multiplier
Reaeration rate multiplier
Dissolved organic carbon, DOC (mg/L)
Fraction organic carbon for solids 1, 2, 3 (fraction)
Chlorophyll a concentration (mg/L) pH
Light extinction coefficient (per meter)
Oxidative radical concentration (moles/L)
Bacteria Population (cells/100 mL)
Extra environmental property
Overall decay rate constant for chemicals 1, 2, 3 (per day)

12. MERC Module Time Functions
Water temperature (4) (degrees C)
Normalized light intensity (photolysis option 2)
Wind speed at 10 meters (m/sec)

13. MERC Module Segment Parameters
Water temperature (time function pointer and multiplier)
Wind speed multiplier
Dissolved organic carbon, DOC (mg/L)
Light extinction coefficient (per meter)
Oxidation rate constant (per day)
Methylation rate constant (per day)
Bacterial demethylation rate constant (per day)

14. HEAT Module Time Functions
Cloud cover (4) (percent)
Wind speed at 10 meters (4) (m/sec)
Air temperature (4) (degrees C)
Dew point (3) (degrees C)
Light extinction coefficient (4) (per meter)
Wind sheltering function (unitless)

15. HEAT Module Segment Parameters
Cloud cover pointer and multiplier
Wind speed pointer and multiplier
Air temperature pointer and multiplier
Dew point pointer and multiplier
Light extinction pointer and multiplier
Wind sheltering pointer and multiplier

16. Kinetic Time Functions
Steps to specify time functions:
Point and click on “Used” field to select or de-select time functions
Highlight Time Function
In bottom window, fill in time function values for beginning and ending times
As needed, add time rows by pressing “+ Insert” and edit Date, Time, and Value
Continue selecting time functions and entering data
Press “OK” and save

17. Segment Properties - Parameters
Steps to specify parameters:
Press “Parameters” to enter screen
Highlight and edit parameter values for rows
Press “OK” and save