S. Ponsar
Royal Belgian Institute of Natural Sciences
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Publication
Featured researches published by S. Ponsar.
Ocean Dynamics | 2016
S. Ponsar; Patrick Luyten; Valérie Dulière
Coastal management and maritime safety strongly rely on accurate representations of the sea state. Both dynamical models and observations provide abundant pieces of information. However, none of them provides the complete picture. The assimilation of observations into models is one way to improve our knowledge of the ocean state. Its application in coastal models remains challenging because of the wide range of temporal and spatial variabilities of the processes involved. This study investigates the assimilation of temperature profiles with the ensemble Kalman filter in 3-D North Sea simulations. The model error is represented by the standard deviation of an ensemble of model states. Parameters’ values for the ensemble generation are first computed from the misfit between the data and the model results without assimilation. Then, two square root algorithms are applied to assimilate the data. The impact of data assimilation on the simulated temperature is assessed. Results show that the ensemble Kalman filter is adequate for improving temperature forecasts in coastal areas, under adequate model error specification.
Ocean Dynamics | 2009
S. Ponsar; Patrick Luyten
Climate Services | 2018
Piet Termonia; Bert Van Schaeybroeck; Lesley De Cruz; Rozemien De Troch; Steven Caluwaerts; Olivier Giot; Rafiq Hamdi; Stéphane Vannitsem; François Duchêne; Patrick Willems; Hossein Tabari; Els Van Uytven; Parisa Hosseinzadehtalaei; Nicole Van Lipzig; Hendrik Wouters; Sam Vanden Broucke; Jean-Pascall Van Ypersele; Philippe Marbaix; Cecille Villanueva-Birriel; Xavier Fettweis; Coraline Wyard; Chloé Scholzen; Sébastien Doutreloup; Koen De Ridder; Anne Gobin; Dirk Lauwaet; Trissevgeni Stavrakou; Maite Bauwens; Jean-François Müller; Patrick Luyten
Ocean Dynamics | 2011
S. Ponsar; Patrick Luyten; Jose Ozer
Archive | 2009
D. Van den Eynde; R. De Sutter; L. De Smet; F. Francken; J. Haelters; Frank Maes; Elke Malfait; J. Ozer; Hans Polet; S. Ponsar; J. Reyns; K. Van der Biest; Els Vanderperren; T. Verwaest; A.M. Volckaert; Marian Willekens
Archive | 2017
Piet Termonia; Bert Van Schaeybroeck; Lesley De Cruz; Rozemien De Troch; Olivier Giot; Rafiq Hamdi; Stéphane Vannitsem; Patrick Willems; Hossein Tabari; Els Van Uytven; Parisa Hosseinzadehtalaei; Nicole Van Lipzig; Hendrik Wouters; Sam Vanden Broucke; Jean-Pascal van Ypersele; Philippe Marbaix; Cecille Villanueva-Birriel; Xavier Fettweis; Coraline Wyard; Chloé Scholzen; Sébastien Doutreloup; K. De Ridder; Anne Gobin; D. Lauwaet; Trissevgeni Stavrakou; Maite Bauwens; J-F. Müller; P. Luyten; S. Ponsar; D. Van den Eynde
Archive | 2016
S. Ponsar; P. Luyten; D. Van den Eynde
Archive | 2015
Piet Termonia; Bert Van Schaeybroeck; Lesley De Cruz; Rozemien De Troch; Olivier Giot; Rafiq Hamdi; Stéphane Vannitsem; François Duchêne; Patrick Willems; Hossein Tabari; Els Van Uytven; Parisa Hosseinzadehtalaei; Nicole Van Lipzig; Hendrik Wouters; Sam Vanden Broucke; Matthias Demuzere; Jean-Pascal van Ypersele; Philippe Marbaix; Cecille Villanueva-Birriel; Xavier Fettweis; Coraline Wyard; Chloé Scholzen; Sébastien Doutreloup; Koen De Ridder; Dirk Lauwaet; Anne Gobin; Trissevgeni Stavrakou; Maite Bauwens; Jean-François Müller; P. Luyten
VLIZ Special Publication | 2011
D. Van den Eynde; J. Ozer; S. Ponsar
Archive | 2008
D. Van den Eynde; R. De Sutter; Frank Maes; J. Ozer; Hans Polet; S. Ponsar; K. Van der Biest; Els Vanderperren; T. Verwaest; A.M. Volckaert