Summary
In this paper ERS-1 altimeter data are used for the calibration of a tidal model of the European Continental Shelf. The data assimilation procedure to estimate the uncertain parameters in the model is based on the adjoint method. Here the estimation problem is formulated as a large scale optimization problem, that is solved with a gradient based optimization method. The gradient is determined efficiently by using the solution of the adjoint problem. The data assimilation procedure is applied by using the ERS-1 data with and without other measurement information from water level stations.
Zusammenfassung
In dieser Arbeit werden ERS-1 Altimeter Daten zum Kalibrieren eines Gezeitenmodells des Europäischen Kontinentalschelfs benutzt. Das Verfahren der Datenassimilation zur Bestimmung der unbekannten Modellparameter beruht auf der adjungierten Methode. Die Aufgabe ist ein großskaliges Optimierungsproblem, das mit einem Gradientenverfahren gelöst wird. Zur Gradientenbestimmung benutzt man die Lösung des adjungierten Problems. Neben den Daten von ERS-1 werden wahlweise noch Beobachtungen von Küstenpegeln assimiliert.
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Mouthaan, E.E.A., Heemink, A.W. & Robaczewska, K.B. Assimilation of ERS-1 altimeter data in a tidal model of the continental shelf. Deutsche Hydrographische Zeitschrift 46, 285–319 (1994). https://doi.org/10.1007/BF02226308
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DOI: https://doi.org/10.1007/BF02226308