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Learn how to assess model performance based on calibration objectives for stage, flow, and water quality (EC) in DSM2. Check for phase, amplitude, and accuracy issues in flow and EC estimates, focusing on tidal day averages and dry periods for analysis.
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Measures of Model Performance Based on Last DSM2 Calibration Effort
Objectives • Stage • Flow • Water Quality (EC)
Stage • Instantaneous • Usually checked for a few short (A few weeks) but distinctly different flow periods • Check for Phase & Amplitude • Be aware of Datum issues!
Flow • Instantaneous Check for amplitude, phase and magnitude Large errors may imply lack of accuracy in geometry (Usually checked for a few short distinct periods) • Tidal average Can be checked for a longer period Accuracy maybe an issue when net flows are small compared to tidal flows
Water Quality (EC) • Primary focus on tidal day averages only • Dry periods provide the most interesting analysis (ocean salinity intrusion) • Errors in “net Delta outflow” estimates may lead to significant errors in EC estimates