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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2012
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ftdoajarticles:oai:doaj.org/article:48ecbc19d10b453da9de463988c44870 2023-05-15T18:25:23+02:00 Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys E. W. Blockley M. J. Martin P. Hyder 2012-07-01T00:00:00Z https://doi.org/10.5194/os-8-551-2012 https://doaj.org/article/48ecbc19d10b453da9de463988c44870 EN eng Copernicus Publications http://www.ocean-sci.net/8/551/2012/os-8-551-2012.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-8-551-2012 1812-0784 1812-0792 https://doaj.org/article/48ecbc19d10b453da9de463988c44870 Ocean Science, Vol 8, Iss 4, Pp 551-565 (2012) Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2012 ftdoajarticles https://doi.org/10.5194/os-8-551-2012 2022-12-31T12:13:01Z 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 Directory of Open Access Journals: DOAJ Articles Southern Ocean Ocean Science 8 4 551 565 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 E. W. Blockley M. J. Martin P. Hyder Validation of FOAM near-surface ocean current forecasts using Lagrangian drifting buoys |
topic_facet |
Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
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 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 |
http://www.ocean-sci.net/8/551/2012/os-8-551-2012.pdf https://doaj.org/toc/1812-0784 https://doaj.org/toc/1812-0792 doi:10.5194/os-8-551-2012 1812-0784 1812-0792 https://doaj.org/article/48ecbc19d10b453da9de463988c44870 |
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_ |
1766206812563963904 |