The CORA 5.2 dataset for global in situ temperature and salinity measurements: data description and validation
We present the Copernicus in situ ocean dataset of temperature and salinity (version 5.2). Ocean subsurface sampling varied widely from 1950 to 2017 as a result of changes in instrument technology and the development of in situ observational networks (in particular, tropical moorings for the Argo pr...
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ftcopernicus:oai:publications.copernicus.org:os73511 2023-05-15T17:29:13+02:00 The CORA 5.2 dataset for global in situ temperature and salinity measurements: data description and validation Szekely, Tanguy Gourrion, Jérôme Pouliquen, Sylvie Reverdin, Gilles 2019-12-04 application/pdf https://doi.org/10.5194/os-15-1601-2019 https://os.copernicus.org/articles/15/1601/2019/ eng eng doi:10.5194/os-15-1601-2019 https://os.copernicus.org/articles/15/1601/2019/ eISSN: 1812-0792 Text 2019 ftcopernicus https://doi.org/10.5194/os-15-1601-2019 2020-07-20T16:22:33Z We present the Copernicus in situ ocean dataset of temperature and salinity (version 5.2). Ocean subsurface sampling varied widely from 1950 to 2017 as a result of changes in instrument technology and the development of in situ observational networks (in particular, tropical moorings for the Argo program). Thus, global ocean temperature data coverage on an annual basis grew from 10 % in 1950 (30 % for the North Atlantic basin) to 25 % in 2000 (60 % for the North Atlantic basin) and reached a plateau exceeding 80 % (95 % for the North Atlantic Ocean) after the deployment of the Argo program. The average depth reached by the profiles also increased from 1950 to 2017. The validation framework is presented, and an objective analysis-based method is developed to assess the quality of the dataset validation process. Objective analyses (OAs) of the ocean variability are calculated without taking into account the data quality flags (raw dataset OA), with the near-real-time quality flags (NRT dataset OA), and with the delayed-time-mode quality flags (CORA dataset OA). The comparison of the objective analysis variability shows that the near-real-time dataset managed to detect and to flag most of the large measurement errors, reducing the analysis error bar compared to the raw dataset error bar. It also shows that the ocean variability of the delayed-time-mode validated dataset is almost exempt from random-error-induced variability. Text North Atlantic Copernicus Publications: E-Journals Cora ENVELOPE(-60.317,-60.317,-62.467,-62.467) Ocean Science 15 6 1601 1614 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
We present the Copernicus in situ ocean dataset of temperature and salinity (version 5.2). Ocean subsurface sampling varied widely from 1950 to 2017 as a result of changes in instrument technology and the development of in situ observational networks (in particular, tropical moorings for the Argo program). Thus, global ocean temperature data coverage on an annual basis grew from 10 % in 1950 (30 % for the North Atlantic basin) to 25 % in 2000 (60 % for the North Atlantic basin) and reached a plateau exceeding 80 % (95 % for the North Atlantic Ocean) after the deployment of the Argo program. The average depth reached by the profiles also increased from 1950 to 2017. The validation framework is presented, and an objective analysis-based method is developed to assess the quality of the dataset validation process. Objective analyses (OAs) of the ocean variability are calculated without taking into account the data quality flags (raw dataset OA), with the near-real-time quality flags (NRT dataset OA), and with the delayed-time-mode quality flags (CORA dataset OA). The comparison of the objective analysis variability shows that the near-real-time dataset managed to detect and to flag most of the large measurement errors, reducing the analysis error bar compared to the raw dataset error bar. It also shows that the ocean variability of the delayed-time-mode validated dataset is almost exempt from random-error-induced variability. |
format |
Text |
author |
Szekely, Tanguy Gourrion, Jérôme Pouliquen, Sylvie Reverdin, Gilles |
spellingShingle |
Szekely, Tanguy Gourrion, Jérôme Pouliquen, Sylvie Reverdin, Gilles The CORA 5.2 dataset for global in situ temperature and salinity measurements: data description and validation |
author_facet |
Szekely, Tanguy Gourrion, Jérôme Pouliquen, Sylvie Reverdin, Gilles |
author_sort |
Szekely, Tanguy |
title |
The CORA 5.2 dataset for global in situ temperature and salinity measurements: data description and validation |
title_short |
The CORA 5.2 dataset for global in situ temperature and salinity measurements: data description and validation |
title_full |
The CORA 5.2 dataset for global in situ temperature and salinity measurements: data description and validation |
title_fullStr |
The CORA 5.2 dataset for global in situ temperature and salinity measurements: data description and validation |
title_full_unstemmed |
The CORA 5.2 dataset for global in situ temperature and salinity measurements: data description and validation |
title_sort |
cora 5.2 dataset for global in situ temperature and salinity measurements: data description and validation |
publishDate |
2019 |
url |
https://doi.org/10.5194/os-15-1601-2019 https://os.copernicus.org/articles/15/1601/2019/ |
long_lat |
ENVELOPE(-60.317,-60.317,-62.467,-62.467) |
geographic |
Cora |
geographic_facet |
Cora |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
eISSN: 1812-0792 |
op_relation |
doi:10.5194/os-15-1601-2019 https://os.copernicus.org/articles/15/1601/2019/ |
op_doi |
https://doi.org/10.5194/os-15-1601-2019 |
container_title |
Ocean Science |
container_volume |
15 |
container_issue |
6 |
container_start_page |
1601 |
op_container_end_page |
1614 |
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1766122868103446528 |