Modeling a waterbody requires the estimation of the mass balance of all the constituents that enter and exit the modeling domain. Mass balance is an essential aspect of weight-of-evidence based model calibration. Once you develop a model EE can be used to quickly estimate the mass balance. The Boundary Mass Loading can be selected from the Tool menu as shown in 2189492230Online Tidal Harmonics: This tool can be treated as a shortcut or an alternative method to generate a tidal water level series. The user must specify the simulation period beforehand so EE can generate data series for this period. To generate water level data series for model boundary cells, the user can bring up a 2DH view and then select a range of boundary cells for which water level data series will be generated (Figure 6). When the boundary cells have been selected, the user can select from the main menu Tools and the sub-menu Online Tidal Harmonics then Download for Model Boundaries (Figure 7). The download dialog will show up with the position of the selected cells populated in the List of Locations in Figure 8. The user can manage the list of the selected locations using Add, Remove and Update buttons. The phase lag of the harmonic constants is referred to as zero UTC so the user may need to change the time shift to adjust for the model local time. Once everything is ready, the user can click the Get Data button to download the harmonics and generate the data series. The generated water level data series will be populated to the Water Level group in External Forcing Data and can be used for the model boundary conditions.
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Figure 1. Boundary Mass Loading.
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Mass Loading
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Figure 2. Flow Boundary Mass Loading Form: Water.
The unit for some constituents such as sediment, salinity, and toxics can be selected from the drop-down list of the Unit Options , as shown in 2189492230. After clicking on the Compute button, a mass loading report will be shown as 2189492230.
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Figure 3. Flow Boundary Mass Loading Form: Sediment.
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Figure 4. Flow Boundary Mass Loading: Report.
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