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Cited by 20Marine and coastal ecosystemsOcean Acidification Effects and ResponsesOceanographic and Atmospheric Processes

Variability and trends of carbon parameters at a time series in the eastern tropical Atlantic.

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Lefévre, Nathalie, Veleda, Doris, Araujo, Moacyr, Caniaux, Guy·2016·Tellus B: Chemical and Physical Meteorology
DOI 10.3402/tellusb.v68.30305
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Abstract

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.

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  • Acidification has been examined at the 6°S, 10°W moored pCO2 site, though the record is not long enough to detect any increase in CO2 or decrease in pH given the strong natural variability of CO2.

    “Acidification has been examined at this site, though the record is not long enough to detect any increase in CO 2 (or decrease of pH) given the strong natural variability of CO 2 (Lefevre et al., 2016).”

    From The tropical atlantic observing system (2019) · cites this paper as Lefevre et al., 2016

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Cited by

Sorted by citations

Authors
Lefévre, N., Veleda, D., Araujo, M., & Caniaux, G.
Affiliations
Centre National de la Recherche Scientifique (FR)
ORCID
Caniaux, Guy
Venue
Tellus B: Chemical and Physical Meteorology
Publisher
Stockholm University Press
Published
2016-01-01
Volume
68
Issue
1
Pages
30305
ISSN
  • 0280-6509 (ISSN-L)
  • 1600-0889
DOI
10.3402/tellusb.v68.30305
OpenAlex
W2372300174
Cited by
20
References
1
Citations by year
2024: 3 · 2023: 1 · 2022: 6 · 2021: 5 · 2019: 4 · 2017: 1
FWCI
1.35
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Tellus B (publishedVersion, cc-by)
  • HAL (submittedVersion, other-oa)
  • Institutional Archive of Ifremer (French Research Institute for Exploitation of the Sea) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Aeronautics and Space Administration
  • National Oceanic and Atmospheric Administration
  • Goddard Space Flight Center
Topics
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Ocean Acidification Effects and Responses
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
Keywords
surface ocean CO2, fugacity of CO2, pH, inorganic carbon, alkalinity, eastern tropical Atlantic, Atlantic cold tongue, seasonal variation, interannual variability, CO2 flux, sea surface salinity, sea surface temperature, atmospheric CO2 increase, ocean carbon cycle

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