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Real-time sea-level gauge observations and operational oceanography.
Baptiste Mourre1, Laurence Crosnier, Christian Le Provost
1LEGOS 14 avenue Edouard Belin, 31400 Toulouse, France. mourre@icm.csic.es
Summary
Real-time tide-gauge data enhance operational oceanography by validating ocean models and improving storm surge predictions. This sea-level monitoring is crucial for accurate coastal forecasts and system reliability.
Area of Science:
- Operational Oceanography
- Coastal Monitoring
- Sea-Level Variability
Background:
- Tide-gauge data offer unique insights into global sea-level changes along coastlines.
- Real-time data delivery is essential for effective application in operational oceanography.
Purpose of the Study:
- To discuss the utility of tide-gauge data in operational oceanography.
- To illustrate two distinct real-time applications of tide-gauge data.
Main Methods:
- Basin-scale operational model validation using tide-gauge observations in the North Atlantic (Mercator system).
- Assimilation of tide-gauge data into a North Sea storm surge model using an advanced assimilation scheme.
Main Results:
- Tide-gauge data enable accurate evaluation of ocean model nowcasts and forecasts, crucial for coastal prediction systems.
- Real-time validation requires data delivery within a week for model boundary conditions.
- Frequent assimilation (within hours) of tide-gauge data efficiently controls storm surge model errors.
Conclusions:
- Real-time tide-gauge data are vital for validating and improving operational oceanographic models.
- The timeliness of data significantly impacts its effectiveness in different applications, from model validation to storm surge prediction.