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Observed carbon dioxide and oxygen dynamics in a Baltic Sea coastal region
Department of Earth Sciences, University of Gothenburg, Sweden.
Department of Chemistry, University of Gothenburg, Sweden.
Department of Chemistry, University of Gothenburg, Sweden.
Aix-Marseille Universite´, CNRS, LMGEM-UMR 6117, Laboratoire de Microbiologie, Géochimie et Ecologie Marines, Marseille France.
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2011 (English)In: Journal of Marine Systems, ISSN 0924-7963, E-ISSN 1879-1573, Vol. 86, no 1-2, 1-9 p.Article in journal (Refereed) Published
Abstract [en]

In April 2006, diurnal variations of carbon dioxide (CO2) and oxygen (O-2) in the surface water east of Gotland in the Baltic Sea were investigated with a unique multitechnology approach. Several parameters were measured simultaneously providing an overview of the CO2 system. Moored instruments were continuously recording partial pressure of CO2 in the surface water (pCO(2)(w)), currents, mixing, waves, salinity, temperature and O-2. Measurements of total alkalinity (A(T)) and dissolved inorganic carbon (C-T) were taken from R/V Skagerak. These measurements were converted to pCO(2)(w) to support the continuous pCO(2)(w) data and also calculate the air-sea exchange of CO2. Additionally, the time derivatives of O-2 and CT concentrations in the water were determined using incubations and a Productivity Autosampler (PA). O-2 and pCO(2)(w) were significantly anti-correlated and periods dominated of either biological processes, mixing, air-sea exchange or a combination of these were detected. O-2 and pCO(2)(w) had a daily cycle and variations occurred on the 1 h time scale. In April 2006, the sea was a CO2 sink and the averaged parameterized air-sea exchange was -1.0+/-0.6 mmol m(-2) h(-1).

Place, publisher, year, edition, pages
2011. Vol. 86, no 1-2, 1-9 p.
Keyword [en]
Baltic Sea, Carbon dioxide, Oxygen, pCO(2), Air-sea exchange
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-151973DOI: 10.1016/j.jmarsys.2011.01.001ISI: 000289178800001OAI: oai:DiVA.org:uu-151973DiVA: diva2:412605
Available from: 2011-04-26 Created: 2011-04-20 Last updated: 2017-12-11Bibliographically approved

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Rutgersson, AnnaSahlée, Erik

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