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| Titel |
Assimilation of radar altimeter data in numerical wave models: an impact study in two different wave climate regions |
| VerfasserIn |
G. Emmanouil, G. Galanis, G. Kallos, L. A. Breivik, H. Heiberg, M. Reistad |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 25, no. 3 ; Nr. 25, no. 3 (2007-03-29), S.581-595 |
| Datensatznummer |
250015801
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| Publikation (Nr.) |
 copernicus.org/angeo-25-581-2007.pdf |
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| Zusammenfassung |
| An operational assimilation system incorporating significant wave height
observations in high resolution numerical wave models is studied and
evaluated. In particular, altimeter satellite data provided by the European
Space Agency (ESA-ENVISAT) are assimilated in the wave model WAM which
operates in two different wave climate areas: the Mediterranean Sea and the
Indian Ocean. The first is a wind-sea dominated area while in the second,
swell is the principal part of the sea state, a fact that seriously affects
the performance of the assimilation scheme. A detailed study of the
different impact is presented and the resulting forecasts are evaluated
against available buoy and satellite observations. The corresponding results
show a considerable improvement in wave forecasting for the Indian Ocean
while in the Mediterranean Sea the assimilation impact is restricted to
isolated areas. |
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