Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry
We present a new and fast method that blends altimetric and drifter positions data in order to predict the surface velocity in the Eastern Levantine Mediterranean. The method relies on a variational assimilation approach where a velocity correction is continuously obtained by matching observed drift...
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| Format: | article |
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2016
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| Online Access: | http://hdl.handle.net/10725/7723 https://doi.org/10.1016/j.ocemod.2016.05.006 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.sciencedirect.com/science/article/pii/S1463500316300385 |
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| _version_ | 1864513482712416256 |
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| author | Issa, Leila |
| author2 | Brajard, Julien Fakhri, Milad Hayes, Daniel Mortier, Laurent Poulian, Pierre-Marie |
| author2_role | author author author author author |
| author_facet | Issa, Leila Brajard, Julien Fakhri, Milad Hayes, Daniel Mortier, Laurent Poulian, Pierre-Marie |
| author_role | author |
| dc.creator.none.fl_str_mv | Issa, Leila Brajard, Julien Fakhri, Milad Hayes, Daniel Mortier, Laurent Poulian, Pierre-Marie |
| dc.date.none.fl_str_mv | 2016 2018-05-02T10:37:44Z 2018-05-02T10:37:44Z 2018-05-02 |
| dc.identifier.none.fl_str_mv | 1463-5011 http://hdl.handle.net/10725/7723 https://doi.org/10.1016/j.ocemod.2016.05.006 Issa, L., Brajard, J., Fakhri, M., Hayes, D., Mortier, L., & Poulain, P. M. (2016). Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry. Ocean Modelling, 104, 1-14. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.sciencedirect.com/science/article/pii/S1463500316300385 |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | Ocean Modelling |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | We present a new and fast method that blends altimetric and drifter positions data in order to predict the surface velocity in the Eastern Levantine Mediterranean. The method relies on a variational assimilation approach where a velocity correction is continuously obtained by matching observed drifter positions with those predicted by a simple advection model. The background velocity used in the advection of the drifters is the aggregate of a geostrophic and a wind-driven component and the velocity correction is constrained to be divergence free. The algorithm employs a sliding time window that assimilates at once and inside each frame, an entire trajectory of drifters. We show that with few drifters, our method improves the estimation of velocity in two typical situations: an eddy between the Lebanese coast and Cyprus, and velocities along the Lebanese coast. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_ca9c2790593bc66a087bccf32f4e85d0 |
| identifier_str_mv | 1463-5011 Issa, L., Brajard, J., Fakhri, M., Hayes, D., Mortier, L., & Poulain, P. M. (2016). Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry. Ocean Modelling, 104, 1-14. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/7723 |
| publishDate | 2016 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetryIssa, LeilaBrajard, JulienFakhri, MiladHayes, DanielMortier, LaurentPoulian, Pierre-MarieWe present a new and fast method that blends altimetric and drifter positions data in order to predict the surface velocity in the Eastern Levantine Mediterranean. The method relies on a variational assimilation approach where a velocity correction is continuously obtained by matching observed drifter positions with those predicted by a simple advection model. The background velocity used in the advection of the drifters is the aggregate of a geostrophic and a wind-driven component and the velocity correction is constrained to be divergence free. The algorithm employs a sliding time window that assimilates at once and inside each frame, an entire trajectory of drifters. We show that with few drifters, our method improves the estimation of velocity in two typical situations: an eddy between the Lebanese coast and Cyprus, and velocities along the Lebanese coast.PublishedN/A2018-05-02T10:37:44Z2018-05-02T10:37:44Z20162018-05-02Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1463-5011http://hdl.handle.net/10725/7723https://doi.org/10.1016/j.ocemod.2016.05.006Issa, L., Brajard, J., Fakhri, M., Hayes, D., Mortier, L., & Poulain, P. M. (2016). Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry. Ocean Modelling, 104, 1-14.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttps://www.sciencedirect.com/science/article/pii/S1463500316300385enOcean Modellinginfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/77232021-03-19T10:43:20Z |
| spellingShingle | Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry Issa, Leila |
| status_str | publishedVersion |
| title | Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry |
| title_full | Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry |
| title_fullStr | Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry |
| title_full_unstemmed | Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry |
| title_short | Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry |
| title_sort | Modelling surface currents in the Eastern Levantine Mediterranean using surface drifters and satellite altimetry |
| url | http://hdl.handle.net/10725/7723 https://doi.org/10.1016/j.ocemod.2016.05.006 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.sciencedirect.com/science/article/pii/S1463500316300385 |