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Improvements to SAR models

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Presentation on theme: "Improvements to SAR models"— Presentation transcript:

1 Improvements to SAR models
Dr Øyvind Breivik Norwegian Meteorological Institute

2 Improved wind and currents
Winds Higher resolution – 4 km near rugged coastlines and in fjords, bays and estuaries to resolve topographic effects Currents Higher resolution – 1 km for fjords, bays and estuaries HF currents and the STPS

3 300 m resolution ocean model

4 Errors and uncertainties
Assessing the relative importance of uncertainties in wind, currents and drift properties Ensemble winds (ECMWF 51) Random flight – autocorrelated wind and current perturbations

5 Alternative strategies
Currents switched off for very high resolution simulations? Inverse leeway for backtracking from debris

6 Improved taxonomy Redo older leeway categories with new field methods
Refine the taxonomy for different parts of the world – in close collaboration with RCCs

7 ECMWF 51

8 ECMWF 51


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