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| Titel |
Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys |
| VerfasserIn |
E. W. Blockley, M. J. Martin, P. Hyder |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 8, no. 4 ; Nr. 8, no. 4 (2012-07-30), S.551-565 |
| Datensatznummer |
250005750
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| Publikation (Nr.) |
 copernicus.org/os-8-551-2012.pdf |
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| Zusammenfassung |
| In this study, the quality of near-surface current forecasts from the FOAM
ocean forecasting system is assessed using the trajectories of Lagrangian
drifting buoys. A method is presented for deriving pseudo-Eulerian estimates
of ocean currents from the positions of Surface Velocity Program drifters
and the resulting data are compared to velocities observed by the global
tropical moored buoy array. A quantitative analysis of the global FOAM
velocities is performed for the period 2007 and 2008 using currents derived
from over 3000 unique drifters (providing an average of 650 velocity
observations per day). A potential bias is identified in the Southern Ocean
which appears to be caused by wind-slip in the drifter dataset as a result
of drogue loss. The drifter-derived currents are also used to show how the
data assimilation scheme and a recent system upgrade impact upon the quality
of FOAM current forecasts. |
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