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Which data to output is selected in the Primary Model Results Linkage Options frame, with the sub-item check boxes, such as Velocities. Water Surface must be turned on for EFDC_Explorer to post process any of the model results.
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Figure 1 Timing/Linkage Tab: EE Linkage.
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If simulating sediment transport with the maximum number of bed layers > 1, EFDC_DSI can write the sediment bed properties by layer. Given that the sediment bed dynamics are generally slow relative to the water column dynamics, the user may want to set the sediment bed layer data output interval to a number greater than 1. For example, if the user is writing the water column data every hour but the user only wants sediment bed date every day, the user would specify an output interval of 24 to tell EFDC_DSI to output the sediment data only every 24th water column snapshot.
The user may also manually adjust the output interval for the Rooted Plant & Epiphyte Model when applicable (see Section 5.15.6.1. for details on RPEM).
High Frequency Dates
The High Frequency Dates option (Figure 12380716) is an EFDC_DSI +I option that inserts higher frequency output snapshots into the base snapshot frequency defined in the Linkage Output Frequency. This function allows the user to use a larger base snapshot frequency, resulting in smaller output files and faster post processing times, and still capture specific times in detail. This approach is very useful when matching model results to specific sampling events.
Selecting the Domain check box and then setting the calendar date (or Julian date), frequency and duration of the snapshots. Creates , creates high frequency snapshots covering the whole model domain for the time specified. This approach will clearly lead to slower run times than the approach described above.
Checking the Cells checkbox (as in Figure 1 2380716) and selecting the Dates button provides the user with the option of creating high frequency snapshots of individual cells as shown in Figure 2 2380716. The user may create any number of subsets of the model domain by inputting a number in the Number of Subsets text box. Further subsets may be added one at a time with the Add Subset button.
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Figure 2 Timing/Linkage: High frequency snapshots by subset
The Subset frame shows which subset is in view at any given time and allows the user to cycle through the subsets with the Current Subset arrows. The Julian start time, duration (in hours) and frequency (in minutes) are set by the user for each subset of cells. Cells are defined by their x, y coordinates and may be designated with an ID for easy reference. The full set of subsets are saved with the Save button.