Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys
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...
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Language: | English |
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Copernicus Publications
2012
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Online Access: | https://doi.org/10.5194/os-8-551-2012 http://www.ocean-sci.net/8/551/2012/os-8-551-2012.pdf https://doaj.org/article/48ecbc19d10b453da9de463988c44870 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:48ecbc19d10b453da9de463988c44870 2023-05-15T18:25:20+02:00 Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys E. W. Blockley M. J. Martin P. Hyder 2012-07-01 https://doi.org/10.5194/os-8-551-2012 http://www.ocean-sci.net/8/551/2012/os-8-551-2012.pdf https://doaj.org/article/48ecbc19d10b453da9de463988c44870 en eng Copernicus Publications doi:10.5194/os-8-551-2012 1812-0784 1812-0792 http://www.ocean-sci.net/8/551/2012/os-8-551-2012.pdf https://doaj.org/article/48ecbc19d10b453da9de463988c44870 undefined Ocean Science, Vol 8, Iss 4, Pp 551-565 (2012) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2012 fttriple https://doi.org/10.5194/os-8-551-2012 2023-01-22T19:27:46Z 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. Article in Journal/Newspaper Southern Ocean Unknown Southern Ocean Ocean Science 8 4 551 565 |
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Open Polar |
collection |
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op_collection_id |
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language |
English |
topic |
geo envir |
spellingShingle |
geo envir E. W. Blockley M. J. Martin P. Hyder Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys |
topic_facet |
geo envir |
description |
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. |
format |
Article in Journal/Newspaper |
author |
E. W. Blockley M. J. Martin P. Hyder |
author_facet |
E. W. Blockley M. J. Martin P. Hyder |
author_sort |
E. W. Blockley |
title |
Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys |
title_short |
Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys |
title_full |
Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys |
title_fullStr |
Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys |
title_full_unstemmed |
Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys |
title_sort |
validation of foam near-surface ocean current forecasts using lagrangian drifting buoys |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/os-8-551-2012 http://www.ocean-sci.net/8/551/2012/os-8-551-2012.pdf https://doaj.org/article/48ecbc19d10b453da9de463988c44870 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Ocean Science, Vol 8, Iss 4, Pp 551-565 (2012) |
op_relation |
doi:10.5194/os-8-551-2012 1812-0784 1812-0792 http://www.ocean-sci.net/8/551/2012/os-8-551-2012.pdf https://doaj.org/article/48ecbc19d10b453da9de463988c44870 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/os-8-551-2012 |
container_title |
Ocean Science |
container_volume |
8 |
container_issue |
4 |
container_start_page |
551 |
op_container_end_page |
565 |
_version_ |
1766206711366942720 |