XBT profilers for operational purposes: application and validation in real exercises
[EN] A methodology for recovering salinity from expendable bathythermograph (XBT) data is presented. The procedure exploits climatological relationships between temperature, salinity and depth to build regional characteristic curves by fitting a polynomial function that minimises both the variance o...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2008 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/9585 |
| Acceso en línea: | http://hdl.handle.net/10261/9585 |
| Access Level: | acceso abierto |
| Palabra clave: | XBT probes Operational oceanography Inverse method Sonda XBT Oceanografía operacional Método inverso XBT |
| id |
ES_1a7b7d5a3a7d34bbd55d3cec8afb9cc7 |
|---|---|
| oai_identifier_str |
oai:digital.csic.es:10261/9585 |
| network_acronym_str |
ES |
| network_name_str |
España |
| repository_id_str |
|
| dc.title.none.fl_str_mv |
XBT profilers for operational purposes: application and validation in real exercises Perfiladores XBT para fines operacionales: aplicación y validación en dos casos reales |
| title |
XBT profilers for operational purposes: application and validation in real exercises |
| spellingShingle |
XBT profilers for operational purposes: application and validation in real exercises Machín, Francisco XBT probes Operational oceanography Inverse method Sonda XBT Oceanografía operacional Método inverso XBT |
| title_short |
XBT profilers for operational purposes: application and validation in real exercises |
| title_full |
XBT profilers for operational purposes: application and validation in real exercises |
| title_fullStr |
XBT profilers for operational purposes: application and validation in real exercises |
| title_full_unstemmed |
XBT profilers for operational purposes: application and validation in real exercises |
| title_sort |
XBT profilers for operational purposes: application and validation in real exercises |
| dc.creator.none.fl_str_mv |
Machín, Francisco Emelianov, Mikhail Salat, Jordi Rodríguez Fornes, Pablo García-Ladona, Emilio Menéndez, Javier |
| author |
Machín, Francisco |
| author_facet |
Machín, Francisco Emelianov, Mikhail Salat, Jordi Rodríguez Fornes, Pablo García-Ladona, Emilio Menéndez, Javier |
| author_role |
author |
| author2 |
Emelianov, Mikhail Salat, Jordi Rodríguez Fornes, Pablo García-Ladona, Emilio Menéndez, Javier |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
XBT probes Operational oceanography Inverse method Sonda XBT Oceanografía operacional Método inverso XBT |
| topic |
XBT probes Operational oceanography Inverse method Sonda XBT Oceanografía operacional Método inverso XBT |
| description |
[EN] A methodology for recovering salinity from expendable bathythermograph (XBT) data is presented. The procedure exploits climatological relationships between temperature, salinity and depth to build regional characteristic curves by fitting a polynomial function that minimises both the variance of residuals and unknowns. Hence, salinity is computed and recovered as a function of temperature and depth. Empirical formula are provided to recover the salinity field from temperature- depth measurements for the Cantabrian Sea and Galician Area. The method is validated and applied in the context of two marine rescue exercises carried out in the Bay of Biscay close to the north coast of Spain and in the Finisterre region, where a series of XBT and conductivity temperature-depth (CTD) profiles were acquired during fast samplings. The results agree reasonably well with independent data in terms of the spatial structure, with the largest errors in the upper 100 m of the ocean and at intermediate levels. The first diagnoses of the surface geostrophic velocity fields obtained through the salinity reconstruction are coherent and may help in rescue and safety operations during marine emergencies. Hence, we recommend that a technical unit should consider this kind of expandable sampling strategy with both XBT and XCTD data during marine emergencies, since it provides useful and comprehensive information rapidly with minimal interference by means of formal operations on board search and rescue ships |
| publishDate |
2008 |
| dc.date.none.fl_str_mv |
2008 2009 2009 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/9585 |
| url |
http://hdl.handle.net/10261/9585 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
https://doi.org/10.3989/scimar.2008.72n4779 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
2387241 bytes application/pdf |
| dc.publisher.none.fl_str_mv |
Consejo Superior de Investigaciones Científicas (España) |
| publisher.none.fl_str_mv |
Consejo Superior de Investigaciones Científicas (España) |
| dc.source.none.fl_str_mv |
reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
| instname_str |
Consejo Superior de Investigaciones Científicas (CSIC) |
| reponame_str |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
| collection |
DIGITAL.CSIC. Repositorio Institucional del CSIC |
| repository.name.fl_str_mv |
|
| repository.mail.fl_str_mv |
|
| _version_ |
1869404108733022208 |
| spelling |
XBT profilers for operational purposes: application and validation in real exercisesPerfiladores XBT para fines operacionales: aplicación y validación en dos casos realesMachín, FranciscoEmelianov, MikhailSalat, JordiRodríguez Fornes, PabloGarcía-Ladona, EmilioMenéndez, JavierXBT probesOperational oceanographyInverse methodSonda XBTOceanografía operacionalMétodo inversoXBT[EN] A methodology for recovering salinity from expendable bathythermograph (XBT) data is presented. The procedure exploits climatological relationships between temperature, salinity and depth to build regional characteristic curves by fitting a polynomial function that minimises both the variance of residuals and unknowns. Hence, salinity is computed and recovered as a function of temperature and depth. Empirical formula are provided to recover the salinity field from temperature- depth measurements for the Cantabrian Sea and Galician Area. The method is validated and applied in the context of two marine rescue exercises carried out in the Bay of Biscay close to the north coast of Spain and in the Finisterre region, where a series of XBT and conductivity temperature-depth (CTD) profiles were acquired during fast samplings. The results agree reasonably well with independent data in terms of the spatial structure, with the largest errors in the upper 100 m of the ocean and at intermediate levels. The first diagnoses of the surface geostrophic velocity fields obtained through the salinity reconstruction are coherent and may help in rescue and safety operations during marine emergencies. Hence, we recommend that a technical unit should consider this kind of expandable sampling strategy with both XBT and XCTD data during marine emergencies, since it provides useful and comprehensive information rapidly with minimal interference by means of formal operations on board search and rescue ships[ES] Presentamos una metodología para el cálculo de la salinidad a partir de datos de XBT. El procedimiento hace uso de la relación climatológica S-T-d para construir curvas características de la región ajustando una función polinomial que minimiza tanto la varianza del residuo como de las incógnitas. De esta manera, la salinidad es calculada en función de la temperatura y la profundidad. Estas expresiones empíricas se han empleado para estimar el campo de salinidad a partir de medidas de temperatura y profundidad realizadas en el Mar Cantábrico y en el área de Galicia. El método se ha validado y aplicado en el contexto de dos ejercicios de salvamento marítimo, llevados a cabo en el Golfo de Vizcaya y en la región de Finisterre, donde se lanzaron XBT’s en muestreos rápidos y se obtuvieron perfiles de CTD. Los resultados muestran una coherencia razonable al compararlos con datos independientes en términos de la estructura espacial, con errores más importantes en los 100 m superiores de la columna de agua y en capas intermedias. Los primeros diagnósticos de la velocidad geostrófia en superficie son igualmente coherentes y pueden ser de gran ayuda en operaciones de salvamento y rescate durante emergencias en el mar. Por tanto, recomendamos a la Unidad Técnica que en situaciones de emergencia considere la posibilidad de realizar campañas con sondas desechables (XBT’s y XCTD’s), en tanto que este proceso es rápido, no interfiere con otras operaciones de salvamento y ofrece información de gran utilidadWe would like to thank the ESEOO Project (VEM2003-20577-C14) for providing the framework in which this study was carried out. The first author would like to thank the CANOA Project (CTM2005-00444/MAR) and Juan de la Cierva Programme, both funded by the Spanish Ministry of Education and Science, for supporting him while working on this studyPeer reviewedConsejo Superior de Investigaciones Científicas (España)200920092008info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_65012387241 bytesapplication/pdfhttp://hdl.handle.net/10261/9585reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3989/scimar.2008.72n4779info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/95852026-05-22T06:33:51Z |
| score |
15,808905 |