Satellite Data Assimilation in an operative wave model of the Caribbean
DOI:
https://doi.org/10.26640/22159045.202Keywords:
Wave spectra, significant wave height, data assimilation, JASON-1, spectral wave modelAbstract
Two techniques for satellite data assimilation in a spectral wave model are developed, implemented and evaluated in the Caribbean Sea. One of them is a sequential method that created an analyzed wave height field by optimal interpolation, also correcting the frequency spectra of the model within a correlation distance, using the JONSWAP spectra with parameters proposed for the Caribbean. A quantitative improvement was not found when comparing the analyzed to the fist-guess fields; however an improvement of the wave height field was evident as result of other tests, which remained about 24 hours. The other technique is a variational assimilation method, based on the small disturbances theory to create a functional that minimizes the error, used to modify some correction constants introduced on the model equations. The results did not consider of the heterogeneity of he wave fields in the Caribbean, as a correlation distance was not used. Carrying out these experiments allowed the calibration of the CarbWAM-III model to achieve adequate levels for operational forecasts.Downloads
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References
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[19] Lonin, S. & L. López. Comparación de los pronósticos de UKMO y MM5 para su utilización en el sistema de pronóstico oceanográfico del Caribe. Boletín Científico CIOH, 2003. (21): 51-65.
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[25] Emmanouil G., Galanis G., Kallos G., Breivik L., Heiberg H. & Reistad M., 2007: Assimilation of radar altimeter data in numerical wave models: an impact study in two different wave climate regions. Annales Geophysicae; (25): 581-595. 81
[2] Francis P. & Stratton R., 1990: Some experiments to investigate the assimilation of SEASAT altimeter wave height data into a global wave model. Q.J.R. Meteorol. Soc., 116, pp. 1225-1251.
[3] Bauer E., Hasselmann S., Hasselmann K. & Graber H., 1992: Validation and assimilation of SEASAT altimeter wave heights using the WAM wave model, J. Geophys. Res., 97, 12, 671-628.
[4] Lionello, P., H. Günther & P.A.E.M. Janssen. 1992: Assimilation of altimeter data in a global third generation wave model. J. Geophys. Res. C97, 14453-14474.
[5] Thomas J., 1988: Retrieval of energy spectra from measured data for assimilation into a wave model. Q.J.R. Meteorol. Soc., (114): 781-800.
[6] Hasselmann K., T. Barnett, E. Bouws, H. Carlson, D. Cartwright, K. Enke, J. Ewing, H. Gienapp, D. Hasselmann, P. Kruseman, A. Meerburg, P. Muller, D. Olbers, K. Richter, W. Sell & H. Walden, 1973: Measurements of wind-wave growth and swell decay during the Joint North Sea Wave Project (JONSWAP), Dtsch. Hydrogr. Z. Suppl. A8(12), 95p.
[7] De Valk C. & Calkoen C., 1989: Wave data assimilation in a third generation wave prediction model for the North sea. Delft Hydraulics Report.
[8] Hasselmann K., Hasselmann S., Bauer E., Bruning C., Lehner S., Graber H. & Lionello P., 1988: Development of a satellite SAR image spectra and altimeter wave height data assimilation system for ERS-1. Max Planck Institut fur Meteorologie, Hamburg, Germany. Report 19, 155 pp.
[9] Bauer E., Hasselmann K., Young I. & Hasselmann S., 1996: Assimilation of wave data into the wave model WAM using an impulse response function method. J. Geophys. Res. 101, (C2): 3801-3816.
[10] Skandrani Ch. & Queffeulou P., 2004: Impact of multisatellite altimeter data assimilation on wave analysis and forecast. Marine Geodesy, 27: 511 -533.
[11] Torres R. 2006: Ficha anteproyecto “Sistema de Pronósticos Oceánicos y Atmosféricos a escala local – SPOA”, DIMAR – CIOH.
[12] Moreno L. & Muñoz A.Desarrollo de un sistema de medición de parámetros oceanográficos y de meteorología marina para el litoral Caribe y Pacífico colombianos. Boletín Científico CIOH. 2006. (24): 148-157.
[13] Torres R. & Lonin S. Estudio del espectro de oleaje en el Caribe observado con boyas y su representación en el espectro JONSWAP. Boletín Científico CIOH. 2007. (25): 8-18.
[14] Torres R. & Lonin S. Construcción de espectros de oleaje en el mar Caribe a partir de mediciones satelitales. Boletín Científico CIOH. 2007. (25): 19-31.
[15] Torres R. 2008: Asimilación de mediciones satelitales en un modelo operacional de oleaje en el Caribe. Tesis de Maestría. Escuela Naval Almirante Padilla, Colombia. 166 pp.
[16] Komen G., Cavaleri L., Donelan M., Hasselmann K., Hasselmann S. & P. Janssen, 1994: Dynamics and modelling of ocean waves. Cambridge Univ. Press, New York. 532 pp.
[17] Lonin S., I. Lonina & J. Tuchkovenko. Utilización del modelo Ned WAM para el cálculo y pronóstico del oleaje en el mar Caribe. Boletín Científico CIOH. 1996. (17): 37-45.
[18] Lonin, S., Torres R. & Lonina I. Propagación del oleaje y asimilación de datos satelitales en un modelo espectral de tercera generación. Boletín Científico CIOH. 2007. (25): 32-44.
[19] Lonin, S. & L. López. Comparación de los pronósticos de UKMO y MM5 para su utilización en el sistema de pronóstico oceanográfico del Caribe. Boletín Científico CIOH, 2003. (21): 51-65.
[20] Marchuk, G.I., 1974: Solución numérica de los problemas de dinámica de la atmósfera y el océano. Leningrado, Gidrometeoizdat, 303 p. (en ruso).
[21] Ortiz-Royero, J. & A. Mercado-Irizarry. An inter comparison of SWAN and WAVEWATCH III models with data from NDBC-NOAA buoys at oceanic scales. Coastal Engineering Journal, 2008. 50 (1): 47-73.
[22] Wittmann, P.A. 2001: Implementation of WAVEWATCH III at Fleet Numerical Meteorology and Oceanography Center”. Oceans 2001 MTS/IEEE Conference Proceedings (available from The Marine Technology society, 1828 L. Street, N.W., Suite 906 Washington, DC 20035).
[23] Willmott, C. J. 1981: On the validation of models. Phys. Geograp. J. (2): 184-194.
[24] Wornom, S. & Welsh, D. 2002: An MPI quasi time-accurate approach for nearshore wave prediction using SWAN code. Part I. Coastal Engineering Journal 44 (3): 247-256; Part II., Coastal Engineering Journal; 44 (3): 257-280.
[25] Emmanouil G., Galanis G., Kallos G., Breivik L., Heiberg H. & Reistad M., 2007: Assimilation of radar altimeter data in numerical wave models: an impact study in two different wave climate regions. Annales Geophysicae; (25): 581-595. 81
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2009-12-05
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How to Cite
Satellite Data Assimilation in an operative wave model of the Caribbean. (2009). CIOH Scientific Bulletin, 27, 66-81. https://doi.org/10.26640/22159045.202
