Assessments of anthropogenic CO2 distribution in the tropical Atlantic Ocean |
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Authors: | F Touratier C Goyet C Coatanoan C Andri |
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Institution: | aBDSI, Université de Perpignan Via Domitia, 52 avenue Paul Alduy, 66860 Perpignan, France;bIFREMER, Centre de Brest, BP 70, 29280 Plouzané, France;cLODYC, CNRS/IRD/Université Pierre et Marie Curie, 4 place Jussieu, case 100, 75252 Paris Cedex 05, France |
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Abstract: | With a limited number of properties (salinity, temperature, total dissolved inorganic carbon, total alkalinity, and oxygen) from a recent cruise in the tropical Atlantic Ocean, we use the simple and recent approach TrOCA (Tracer combining Oxygen, inorganic Carbon, and total Alkalinity) to estimate the distribution of anthropogenic CO2 along three latitudinal sections. In order to assess the quality of the anthropogenic CO2 distribution, results from the method are compared to the CFC-11 measurements. We discuss the large-scale distribution of the main water masses of the tropical Atlantic Ocean in the light of the anthropogenic CO2 and the CFC-11 distributions. Keeping in mind that the anthropogenic CO2 emission began 60 years earlier than that of CFC-11, the former provides new insight on the local circulation and efficiency of the tropical waters to store the atmospheric carbon. |
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Keywords: | Carbon cycle Water mass Atlantic Ocean Tropical belt |
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