Improvement of bias detection in Argo float conductivity sensors and its application in the North Atlantic
We propose modifications of the OW method (Owens and Wong, 2009) used to estimate the time-varying correction of conductivity measurements from Argo floats. These modifications are necessary to account for large interannual to decadal variability of the large-scale salinity field observed, for insta...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Pergamon-elsevier Science Ltd
2016
|
Subjects: | |
Online Access: | https://archimer.ifremer.fr/doc/00337/44843/44431.pdf https://doi.org/10.1016/j.dsr.2016.05.007 https://archimer.ifremer.fr/doc/00337/44843/ |
id |
ftarchimer:oai:archimer.ifremer.fr:44843 |
---|---|
record_format |
openpolar |
spelling |
ftarchimer:oai:archimer.ifremer.fr:44843 2023-05-15T17:28:05+02:00 Improvement of bias detection in Argo float conductivity sensors and its application in the North Atlantic Cabanes, Cecile Thierry, Virginie Lagadec, Catherine 2016-08 application/pdf https://archimer.ifremer.fr/doc/00337/44843/44431.pdf https://doi.org/10.1016/j.dsr.2016.05.007 https://archimer.ifremer.fr/doc/00337/44843/ eng eng Pergamon-elsevier Science Ltd https://archimer.ifremer.fr/doc/00337/44843/44431.pdf doi:10.1016/j.dsr.2016.05.007 https://archimer.ifremer.fr/doc/00337/44843/ 2016 Elsevier Ltd. All rights reserved. info:eu-repo/semantics/openAccess restricted use Deep-sea Research Part I-oceanographic Research Papers (0967-0637) (Pergamon-elsevier Science Ltd), 2016-08 , Vol. 114 , P. 128-136 text Publication info:eu-repo/semantics/article 2016 ftarchimer https://doi.org/10.1016/j.dsr.2016.05.007 2021-09-23T20:28:31Z We propose modifications of the OW method (Owens and Wong, 2009) used to estimate the time-varying correction of conductivity measurements from Argo floats. These modifications are necessary to account for large interannual to decadal variability of the large-scale salinity field observed, for instance, in the North-Atlantic Ocean and to provide corrections with realistic error bars. The covariance function used to map reference salinity data at the float profile position was modified in order to minimize the contribution of the oldest reference data to the large-scale salinity field estimate. Mapping error now includes errors in the large-scale field estimates and fit error now takes into account the lateral dependence between climatological profiles. Finally, we used the modified OW method to check the consistency of the Argo salinity dataset available in delayed mode in the North-Atlantic Ocean. Overall, salinity corrections need to be reconsidered for 4.5% of the floats. Article in Journal/Newspaper North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Deep Sea Research Part I: Oceanographic Research Papers 114 128 136 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
We propose modifications of the OW method (Owens and Wong, 2009) used to estimate the time-varying correction of conductivity measurements from Argo floats. These modifications are necessary to account for large interannual to decadal variability of the large-scale salinity field observed, for instance, in the North-Atlantic Ocean and to provide corrections with realistic error bars. The covariance function used to map reference salinity data at the float profile position was modified in order to minimize the contribution of the oldest reference data to the large-scale salinity field estimate. Mapping error now includes errors in the large-scale field estimates and fit error now takes into account the lateral dependence between climatological profiles. Finally, we used the modified OW method to check the consistency of the Argo salinity dataset available in delayed mode in the North-Atlantic Ocean. Overall, salinity corrections need to be reconsidered for 4.5% of the floats. |
format |
Article in Journal/Newspaper |
author |
Cabanes, Cecile Thierry, Virginie Lagadec, Catherine |
spellingShingle |
Cabanes, Cecile Thierry, Virginie Lagadec, Catherine Improvement of bias detection in Argo float conductivity sensors and its application in the North Atlantic |
author_facet |
Cabanes, Cecile Thierry, Virginie Lagadec, Catherine |
author_sort |
Cabanes, Cecile |
title |
Improvement of bias detection in Argo float conductivity sensors and its application in the North Atlantic |
title_short |
Improvement of bias detection in Argo float conductivity sensors and its application in the North Atlantic |
title_full |
Improvement of bias detection in Argo float conductivity sensors and its application in the North Atlantic |
title_fullStr |
Improvement of bias detection in Argo float conductivity sensors and its application in the North Atlantic |
title_full_unstemmed |
Improvement of bias detection in Argo float conductivity sensors and its application in the North Atlantic |
title_sort |
improvement of bias detection in argo float conductivity sensors and its application in the north atlantic |
publisher |
Pergamon-elsevier Science Ltd |
publishDate |
2016 |
url |
https://archimer.ifremer.fr/doc/00337/44843/44431.pdf https://doi.org/10.1016/j.dsr.2016.05.007 https://archimer.ifremer.fr/doc/00337/44843/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Deep-sea Research Part I-oceanographic Research Papers (0967-0637) (Pergamon-elsevier Science Ltd), 2016-08 , Vol. 114 , P. 128-136 |
op_relation |
https://archimer.ifremer.fr/doc/00337/44843/44431.pdf doi:10.1016/j.dsr.2016.05.007 https://archimer.ifremer.fr/doc/00337/44843/ |
op_rights |
2016 Elsevier Ltd. All rights reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.dsr.2016.05.007 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
114 |
container_start_page |
128 |
op_container_end_page |
136 |
_version_ |
1766120543776407552 |