Lagrangian water mass tracing from pseudo-Argo, model-derived salinity, tracer and velocity data: An application to Antarctic Intermediate Water in the South Atlantic Ocean
We use the tracer and velocity fields of a climatological ocean model to investigate the ability of Argo-like data to estimate accurately water mass movements and transformations, in the style of analyses commonly applied to the output of ocean general circulation model. To this end, we introduce an...
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fttriple:oai:gotriple.eu:10670/1.3za58j 2023-05-15T13:51:38+02:00 Lagrangian water mass tracing from pseudo-Argo, model-derived salinity, tracer and velocity data: An application to Antarctic Intermediate Water in the South Atlantic Ocean Blanke, Bruno Speich, Sabrina Rusciano, Emanuela https://doi.org/10.1016/j.ocemod.2014.11.004 https://archimer.ifremer.fr/doc/00238/34910/33219.pdf https://archimer.ifremer.fr/doc/00238/34910/33597.pdf https://archimer.ifremer.fr/doc/00238/34910/ en eng Elsevier Sci Ltd doi:10.1016/j.ocemod.2014.11.004 10670/1.3za58j https://archimer.ifremer.fr/doc/00238/34910/33219.pdf https://archimer.ifremer.fr/doc/00238/34910/33597.pdf https://archimer.ifremer.fr/doc/00238/34910/ other Archimer, archive institutionnelle de l'Ifremer Ocean Modelling (1463-5003) (Elsevier Sci Ltd), 2015-01 , Vol. 85 , P. 56-67 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1016/j.ocemod.2014.11.004 2023-01-22T17:40:34Z We use the tracer and velocity fields of a climatological ocean model to investigate the ability of Argo-like data to estimate accurately water mass movements and transformations, in the style of analyses commonly applied to the output of ocean general circulation model. To this end, we introduce an algorithm for the reconstruction of a fully non-divergent three-dimensional velocity field from the simple knowledge of the model vertical density profiles and 1000-m horizontal velocity components. The validation of the technique consists in comparing the resulting pathways for Antarctic Intermediate Water in the South Atlantic Ocean to equivalent reference results based on the full model information available for velocity and tracers. We show that the inclusion of a wind-induced Ekman pumping and of a well-thought-out expression for vertical velocity at the level of the intermediate waters is essential for the reliable reproduction of quantitative Lagrangian analyses. Neglecting the seasonal variability of the velocity and tracer fields is not a significant source of errors, at least well below the permanent thermocline. These results give us confidence in the success of the adaptation of the algorithm to true gridded Argo data for investigating the dynamics of flows in the ocean interior. Text Antarc* Antarctic South Atlantic Ocean Unknown Antarctic Ocean Modelling 85 56 67 |
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English |
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envir geo Blanke, Bruno Speich, Sabrina Rusciano, Emanuela Lagrangian water mass tracing from pseudo-Argo, model-derived salinity, tracer and velocity data: An application to Antarctic Intermediate Water in the South Atlantic Ocean |
topic_facet |
envir geo |
description |
We use the tracer and velocity fields of a climatological ocean model to investigate the ability of Argo-like data to estimate accurately water mass movements and transformations, in the style of analyses commonly applied to the output of ocean general circulation model. To this end, we introduce an algorithm for the reconstruction of a fully non-divergent three-dimensional velocity field from the simple knowledge of the model vertical density profiles and 1000-m horizontal velocity components. The validation of the technique consists in comparing the resulting pathways for Antarctic Intermediate Water in the South Atlantic Ocean to equivalent reference results based on the full model information available for velocity and tracers. We show that the inclusion of a wind-induced Ekman pumping and of a well-thought-out expression for vertical velocity at the level of the intermediate waters is essential for the reliable reproduction of quantitative Lagrangian analyses. Neglecting the seasonal variability of the velocity and tracer fields is not a significant source of errors, at least well below the permanent thermocline. These results give us confidence in the success of the adaptation of the algorithm to true gridded Argo data for investigating the dynamics of flows in the ocean interior. |
format |
Text |
author |
Blanke, Bruno Speich, Sabrina Rusciano, Emanuela |
author_facet |
Blanke, Bruno Speich, Sabrina Rusciano, Emanuela |
author_sort |
Blanke, Bruno |
title |
Lagrangian water mass tracing from pseudo-Argo, model-derived salinity, tracer and velocity data: An application to Antarctic Intermediate Water in the South Atlantic Ocean |
title_short |
Lagrangian water mass tracing from pseudo-Argo, model-derived salinity, tracer and velocity data: An application to Antarctic Intermediate Water in the South Atlantic Ocean |
title_full |
Lagrangian water mass tracing from pseudo-Argo, model-derived salinity, tracer and velocity data: An application to Antarctic Intermediate Water in the South Atlantic Ocean |
title_fullStr |
Lagrangian water mass tracing from pseudo-Argo, model-derived salinity, tracer and velocity data: An application to Antarctic Intermediate Water in the South Atlantic Ocean |
title_full_unstemmed |
Lagrangian water mass tracing from pseudo-Argo, model-derived salinity, tracer and velocity data: An application to Antarctic Intermediate Water in the South Atlantic Ocean |
title_sort |
lagrangian water mass tracing from pseudo-argo, model-derived salinity, tracer and velocity data: an application to antarctic intermediate water in the south atlantic ocean |
publisher |
Elsevier Sci Ltd |
url |
https://doi.org/10.1016/j.ocemod.2014.11.004 https://archimer.ifremer.fr/doc/00238/34910/33219.pdf https://archimer.ifremer.fr/doc/00238/34910/33597.pdf https://archimer.ifremer.fr/doc/00238/34910/ |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic South Atlantic Ocean |
genre_facet |
Antarc* Antarctic South Atlantic Ocean |
op_source |
Archimer, archive institutionnelle de l'Ifremer Ocean Modelling (1463-5003) (Elsevier Sci Ltd), 2015-01 , Vol. 85 , P. 56-67 |
op_relation |
doi:10.1016/j.ocemod.2014.11.004 10670/1.3za58j https://archimer.ifremer.fr/doc/00238/34910/33219.pdf https://archimer.ifremer.fr/doc/00238/34910/33597.pdf https://archimer.ifremer.fr/doc/00238/34910/ |
op_rights |
other |
op_doi |
https://doi.org/10.1016/j.ocemod.2014.11.004 |
container_title |
Ocean Modelling |
container_volume |
85 |
container_start_page |
56 |
op_container_end_page |
67 |
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1766255621629280256 |