Variability and trends of carbon parameters at a time series in the eastern tropical Atlantic
Hourly fCO2 is recorded at a time series at the PIRATA buoy located at 6°S 10°W in the eastern tropical Atlantic since June 2006. This site is located south and west of the seasonal Atlantic cold tongue and is affected by its propagation from June to September. Using an alkalinity–salinity relations...
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ftdoajarticles:oai:doaj.org/article:3b96d30b060b4909814caba42b62d7cf 2023-05-15T17:51:52+02:00 Variability and trends of carbon parameters at a time series in the eastern tropical Atlantic Nathalie Lefèvre Doris Veleda Moacyr Araujo Guy Caniaux 2016-05-01T00:00:00Z https://doi.org/10.3402/tellusb.v68.30305 https://doaj.org/article/3b96d30b060b4909814caba42b62d7cf EN eng Stockholm University Press http://www.tellusb.net/index.php/tellusb/article/view/30305/46547 https://doaj.org/toc/1600-0889 1600-0889 doi:10.3402/tellusb.v68.30305 https://doaj.org/article/3b96d30b060b4909814caba42b62d7cf Tellus: Series B, Chemical and Physical Meteorology, Vol 68, Iss 0, Pp 1-16 (2016) fugacity of CO2 ocean acidification time series eastern tropical Atlantic Meteorology. Climatology QC851-999 article 2016 ftdoajarticles https://doi.org/10.3402/tellusb.v68.30305 2022-12-30T23:25:16Z Hourly fCO2 is recorded at a time series at the PIRATA buoy located at 6°S 10°W in the eastern tropical Atlantic since June 2006. This site is located south and west of the seasonal Atlantic cold tongue and is affected by its propagation from June to September. Using an alkalinity–salinity relationship determined for the eastern tropical Atlantic and the observed fCO2, pH and the inorganic carbon concentration are calculated. The time series is investigated to explore the intraseasonal, seasonal and interannual timescales for these parameters, and to detect any long-term trends. At intraseasonal timescales, fCO2 and pH are strongly correlated. On seasonal timescales, the correlation still holds between fCO2 and pH and their variations are in agreement with those of sea surface salinity. At interannual timescales, some important differences appear in 2011–2012: lower fCO2 and fluxes are observed from September to December 2011 and are explained by higher advection of salty waters at the mooring, in agreement with the wind. In early 2012, the anomaly is still present and associated with lower sea surface temperatures. No significant long-term trend is detected over the period 2006–2013 on CO2 and any other physical parameter. However, as atmospheric fCO2 is increasing over time, the outgassing of CO2 is reduced over the period 2006–2013 as the flux is mainly controlled by the difference of fCO2 between the ocean and the atmosphere. A longer time series is required to determine if any significant trend exists in this region. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Tellus B: Chemical and Physical Meteorology 68 1 30305 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
fugacity of CO2 ocean acidification time series eastern tropical Atlantic Meteorology. Climatology QC851-999 |
spellingShingle |
fugacity of CO2 ocean acidification time series eastern tropical Atlantic Meteorology. Climatology QC851-999 Nathalie Lefèvre Doris Veleda Moacyr Araujo Guy Caniaux Variability and trends of carbon parameters at a time series in the eastern tropical Atlantic |
topic_facet |
fugacity of CO2 ocean acidification time series eastern tropical Atlantic Meteorology. Climatology QC851-999 |
description |
Hourly fCO2 is recorded at a time series at the PIRATA buoy located at 6°S 10°W in the eastern tropical Atlantic since June 2006. This site is located south and west of the seasonal Atlantic cold tongue and is affected by its propagation from June to September. Using an alkalinity–salinity relationship determined for the eastern tropical Atlantic and the observed fCO2, pH and the inorganic carbon concentration are calculated. The time series is investigated to explore the intraseasonal, seasonal and interannual timescales for these parameters, and to detect any long-term trends. At intraseasonal timescales, fCO2 and pH are strongly correlated. On seasonal timescales, the correlation still holds between fCO2 and pH and their variations are in agreement with those of sea surface salinity. At interannual timescales, some important differences appear in 2011–2012: lower fCO2 and fluxes are observed from September to December 2011 and are explained by higher advection of salty waters at the mooring, in agreement with the wind. In early 2012, the anomaly is still present and associated with lower sea surface temperatures. No significant long-term trend is detected over the period 2006–2013 on CO2 and any other physical parameter. However, as atmospheric fCO2 is increasing over time, the outgassing of CO2 is reduced over the period 2006–2013 as the flux is mainly controlled by the difference of fCO2 between the ocean and the atmosphere. A longer time series is required to determine if any significant trend exists in this region. |
format |
Article in Journal/Newspaper |
author |
Nathalie Lefèvre Doris Veleda Moacyr Araujo Guy Caniaux |
author_facet |
Nathalie Lefèvre Doris Veleda Moacyr Araujo Guy Caniaux |
author_sort |
Nathalie Lefèvre |
title |
Variability and trends of carbon parameters at a time series in the eastern tropical Atlantic |
title_short |
Variability and trends of carbon parameters at a time series in the eastern tropical Atlantic |
title_full |
Variability and trends of carbon parameters at a time series in the eastern tropical Atlantic |
title_fullStr |
Variability and trends of carbon parameters at a time series in the eastern tropical Atlantic |
title_full_unstemmed |
Variability and trends of carbon parameters at a time series in the eastern tropical Atlantic |
title_sort |
variability and trends of carbon parameters at a time series in the eastern tropical atlantic |
publisher |
Stockholm University Press |
publishDate |
2016 |
url |
https://doi.org/10.3402/tellusb.v68.30305 https://doaj.org/article/3b96d30b060b4909814caba42b62d7cf |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Tellus: Series B, Chemical and Physical Meteorology, Vol 68, Iss 0, Pp 1-16 (2016) |
op_relation |
http://www.tellusb.net/index.php/tellusb/article/view/30305/46547 https://doaj.org/toc/1600-0889 1600-0889 doi:10.3402/tellusb.v68.30305 https://doaj.org/article/3b96d30b060b4909814caba42b62d7cf |
op_doi |
https://doi.org/10.3402/tellusb.v68.30305 |
container_title |
Tellus B: Chemical and Physical Meteorology |
container_volume |
68 |
container_issue |
1 |
container_start_page |
30305 |
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1766159151122087936 |