Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies
The spectrophotometric methodology for carbonate ion determination in seawater was first published in 2008 and has been continuously evolving in terms of reagents and formulations. Although being fast, relatively simple, affordable, and potentially easy to implement in different platforms and facili...
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Centro Oceanográfico de A Coruña
2022
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Online Access: | http://hdl.handle.net/10508/16355 http://hdl.handle.net/10261/316233 https://doi.org/10.1021/acs.est.1c06083 |
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ftcsic:oai:digital.csic.es:10261/316233 2024-02-11T10:07:26+01:00 Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies Gualart, E.F. Fajar, Noelia M. García-Ibáñez, Maribel I. Castaño-Carrera, M. (Mónica) Santiago, R. (Rocío) Hassoun, Abed El Rahman F. Pérez, Fiz Easley, Regina A. Álvarez, M. (Marta) 2022-10-07T08:16:11Z http://hdl.handle.net/10508/16355 http://hdl.handle.net/10261/316233 https://doi.org/10.1021/acs.est.1c06083 en eng Centro Oceanográfico de A Coruña #PLACEHOLDER_PARENT_METADATA_VALUE# https://pubs.acs.org/doi/full/10.1021/acs.est.1c06083 1064-3389 http://hdl.handle.net/10508/16355 http://hdl.handle.net/10261/316233 https://doi.org/10.1021/acs.est.1c06083 50595 open regions acidification weather climate alkalinity research article SMUR SI 2022 ftcsic https://doi.org/10.1021/acs.est.1c06083 2024-01-16T11:44:25Z The spectrophotometric methodology for carbonate ion determination in seawater was first published in 2008 and has been continuously evolving in terms of reagents and formulations. Although being fast, relatively simple, affordable, and potentially easy to implement in different platforms and facilities for discrete and autonomous observations, its use is not widespread in the ocean acidification community. This study uses a merged overdetermined CO2 system data set (carbonate ion, pH, and alkalinity) obtained from 2009 to 2020 to assess the differences among the five current approaches of the methodology through an internal consistency analysis and discussing the sources of uncertainty. Overall, the results show that none of the approaches meet the climate goal (± 1 % standard uncertainty) for ocean acidification studies for the whole carbonate ion content range in this study but usually fulfill the weather goal (± 10 % standard uncertainty). The inconsistencies observed among approaches compromise the consistency of data sets among regions and through time, highlighting the need for a validated standard operating procedure for spectrophotometric carbonate ion measurements as already available for the other measurable CO2 variables. 4,841 Article in Journal/Newspaper Ocean acidification Digital.CSIC (Spanish National Research Council) Environmental Science & Technology 56 12 7381 7395 |
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Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
regions acidification weather climate alkalinity |
spellingShingle |
regions acidification weather climate alkalinity Gualart, E.F. Fajar, Noelia M. García-Ibáñez, Maribel I. Castaño-Carrera, M. (Mónica) Santiago, R. (Rocío) Hassoun, Abed El Rahman F. Pérez, Fiz Easley, Regina A. Álvarez, M. (Marta) Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies |
topic_facet |
regions acidification weather climate alkalinity |
description |
The spectrophotometric methodology for carbonate ion determination in seawater was first published in 2008 and has been continuously evolving in terms of reagents and formulations. Although being fast, relatively simple, affordable, and potentially easy to implement in different platforms and facilities for discrete and autonomous observations, its use is not widespread in the ocean acidification community. This study uses a merged overdetermined CO2 system data set (carbonate ion, pH, and alkalinity) obtained from 2009 to 2020 to assess the differences among the five current approaches of the methodology through an internal consistency analysis and discussing the sources of uncertainty. Overall, the results show that none of the approaches meet the climate goal (± 1 % standard uncertainty) for ocean acidification studies for the whole carbonate ion content range in this study but usually fulfill the weather goal (± 10 % standard uncertainty). The inconsistencies observed among approaches compromise the consistency of data sets among regions and through time, highlighting the need for a validated standard operating procedure for spectrophotometric carbonate ion measurements as already available for the other measurable CO2 variables. 4,841 |
format |
Article in Journal/Newspaper |
author |
Gualart, E.F. Fajar, Noelia M. García-Ibáñez, Maribel I. Castaño-Carrera, M. (Mónica) Santiago, R. (Rocío) Hassoun, Abed El Rahman F. Pérez, Fiz Easley, Regina A. Álvarez, M. (Marta) |
author_facet |
Gualart, E.F. Fajar, Noelia M. García-Ibáñez, Maribel I. Castaño-Carrera, M. (Mónica) Santiago, R. (Rocío) Hassoun, Abed El Rahman F. Pérez, Fiz Easley, Regina A. Álvarez, M. (Marta) |
author_sort |
Gualart, E.F. |
title |
Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies |
title_short |
Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies |
title_full |
Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies |
title_fullStr |
Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies |
title_full_unstemmed |
Spectrophotometric Measurement of Carbonate Ion in Seawater over a Decade: Dealing with Inconsistencies |
title_sort |
spectrophotometric measurement of carbonate ion in seawater over a decade: dealing with inconsistencies |
publisher |
Centro Oceanográfico de A Coruña |
publishDate |
2022 |
url |
http://hdl.handle.net/10508/16355 http://hdl.handle.net/10261/316233 https://doi.org/10.1021/acs.est.1c06083 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# https://pubs.acs.org/doi/full/10.1021/acs.est.1c06083 1064-3389 http://hdl.handle.net/10508/16355 http://hdl.handle.net/10261/316233 https://doi.org/10.1021/acs.est.1c06083 50595 |
op_rights |
open |
op_doi |
https://doi.org/10.1021/acs.est.1c06083 |
container_title |
Environmental Science & Technology |
container_volume |
56 |
container_issue |
12 |
container_start_page |
7381 |
op_container_end_page |
7395 |
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1790605988968005632 |