Questions about vertical water exchange, total phosphorus calculation

EFDC+
1

Hi all,
I have two questions about EFDC. May anyone kindly help me?

1. Is there any vertical water exchange between different water layer? If so, where can I output vertical water exchange velocity?
2. How can I calculate total phosphorus based on simulation results? Is it the sum of ROP, LOP, DOP, P4D? Do we need to consider the phosphorus in phytoplankton?

Thanks in advanced.
Huang

2

In answer to your first question, you can display vertical velocities using the Vertical Vel checkbox in ViewPlan as described here: https://eemodelingsystem.atlassian.net/wiki/display/EEREF/Velocities

3

Total Phosphorus is a derived parameter in EE. The derivation is described here: https://eemodelingsystem.atlassian.net/wiki/display/EEREF/Appendix+C±+Derived+Constituents+for+Water+Quality ’ *** 25 - Total P TP = AlgaeRatio(P:C)*(CHC + CHG + CHD) + ROP + LOP + DOP + P4D Phosphorus is required in the EFDC kinetic equations for phytoplankton.