INTEGRAL CONTROL DATA ASSIMILATION IN WAVE PREDICTIONS

L.H. Holthuijsen; N. Booij; M. van Endt; S. Caires; C. Guedes Soares

doi:10.9753/icce.v25.%p

No. 25 (1996), Conference Proceedings

No. 25 (1996)

INTEGRAL CONTROL DATA ASSIMILATION IN WAVE PREDICTIONS

Conference Proceedings

https://doi.org/10.9753/icce.v25.%25p

Published 1996-01-29

L.H. Holthuijsen⁺⁻
N. Booij⁺⁻
M. van Endt⁺⁻
S. Caires⁺⁻
C. Guedes Soares⁺⁻

L.H. Holthuijsen

Delft University of Technology, Department of Civil Engineering

N. Booij

Delft University of Technology, Department of Civil Engineering

M. van Endt

Delft University of Technology, Department of Civil Engineering

S. Caires

Lisbon University of Technology

C. Guedes Soares

Lisbon University of Technology

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Keywords

integral control data
data assimilation
wave prediction

How to Cite

Holthuijsen, L., Booij, N., van Endt, M., Caires, S., & Soares, C. G. (1996). INTEGRAL CONTROL DATA ASSIMILATION IN WAVE PREDICTIONS. Coastal Engineering Proceedings, 1(25). https://doi.org/10.9753/icce.v25.%p

Abstract

In the present study a technique for assimilating observed wave data in numerical wave predictions is developed that exploits (a) the efficiency of a limited number of integral control variables and (b) the effectiveness of variational (model-consistent) assimilation. The formal procedure is independent of the type of control variables and of the wave model. The integral control variables in this study are chosen to represent large-scale errors in the driving wind fields and uncertainties in the wave model. The assimilation technique is validated with observations of the ERS-1 satellite altimeter and two waverider buoys in two consecutive storms in the Norwegian Sea. The assimilation of the observations reduced the errors in the predicted significant wave height at the buoy locations typically from 25% to 15%. The technique is also demonstrated with an simulation of swell prediction in the Indian Ocean based on simulated buoy data and satellite data.

https://doi.org/10.9753/icce.v25.%25p

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INTEGRAL CONTROL DATA ASSIMILATION IN WAVE PREDICTIONS

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