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Implementation of Boundary Conditions for Inflow Data

Mon, 08/18/2003 - 12:25pm — CBrown_PCEB
I am using CE-QUAL-W2 to examine nutrient and phytoplankton dynamics in a small estuary along the Oregon coast. I have collected inflow data at daily intervals for nutrients and chlorophyll-a, as well as weekly data inside the bay. For the ocean boundary condition, I collected water samples during flood tides. I would like some more information on the boundary condition for inflow of constituents. Specifically, I am wondering if tidal forcing is being used, are the nutrient boundary conditions only being imposed during flood tides (during periods of inflow) and during ebb tides (outflow) or high river flow conditions the constituents are allowed to flow out of the model domain and are not influenced by the specification of the inflow? [addsig]
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Water Quality
Mon, 08/18/2003 - 1:22pm — Tom

Boundary conditions are only used when water enters the computational domain so you are correct. Keep in mind that you will have to specify a boundary temperature/constituent value for all of the layers as the model cannot know ahead of time which layer the water surface resides in. I always set temperatures/concentrations starting at the bottom and working up till I get to the values at the surface, and then repeat those up to layer 2.[addsig]
Mon, 08/18/2003 - 1:58pm — CBrown_PCEB

Thank you very much for the prompt reply. I just wanted to confirm that the BC was implemented in such a manner. Thanks. Cheryl [addsig]