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S9.2.1 - Marine security in the Northwest Shelf seas
The marine security for the Northwest Shelf seas is based on the oil drift model, i.e., the OD3D model, that is operational at the Norwegian Meteorological institute (met.no). Within ECOOP the focus is to enhance the forecast reliability by
- using different ocean models to enable ensemble forecasts
- using high resolution models for coastal areas.
We also pursue the development of new ways to include wave drift and wave-oil interaction in the oil drift service. This is work in progress.
To provide an example of the oil drift service, and the enhancement of the service made possible through ECOOP, we consider an oil spill outside the Norwegian coast.
Here we display the oil drift using currents from four different ocean models
- met.no Nordic 4, which is the standard model used at met.no
- met.no Skagerrak 1.5km, whic is a high resolution model for the Skagerrak area (i.e., the southernmost part of Norway)
- Mercator 1/15'th degree model for the North Atlantic.
- Mercator 1/4'th degree global model.
We see that all models give the same drift direction in all those cases, and this suggests that the drift trajectories are probably very robust for this case. The difference is mainly that the met.no forcing takes a trajectory closer to the coast and the oil becomes stranded after some time. In fact, the drift is using the met.no models, however, because of the stranding of the oil in these cases this is not very clear in the figure but will show up in a more detailed analysis.