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Uptake of atmospheric carbon dioxide in the Barents Sea
Kaltin, S.; Anderson, L.G.; Olsson, K.; Fransson, A.; Chierici, M. (2002). Uptake of atmospheric carbon dioxide in the Barents Sea. J. Mar. Syst. 38(1-2): 31-45. http://dx.doi.org/10.1016/s0924-7963(02)00168-9
In: Journal of Marine Systems. Elsevier: Tokyo; Oxford; New York; Amsterdam. ISSN 0924-7963; e-ISSN 1879-1573, more
Peer reviewed article  

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Keywords
    Air-water exchanges
    Chemical compounds > Carbon compounds > Atmospheric gases > Carbon dioxide
    Inorganic matter > Carbon > Inorganic carbon > Dissolved inorganic matter > Dissolved inorganic carbon
    Uptake
    PNE, Barents Sea [Marine Regions]
    Marine/Coastal
Author keywords
    Barents Sea; carbon dioxide; air-sea exchange; dissolved inorganiccarbon; C/N ratio; carbon overconsumption

Authors  Top 
  • Kaltin, S.
  • Anderson, L.G.
  • Olsson, K.
  • Fransson, A.
  • Chierici, M.

Abstract
    The uptake of atmospheric carbon dioxide has been estimated from data collected in 1999 along a transect in the Barents Sea ranging from 72.5°N, 31°E to 78.2°N, 34°E. The uptake has been calculated from the change in total dissolved inorganic carbon, total alkalinity, nitrate and salinity in the water column and from the conservation of mass. The average uptake of carbon dioxide in Atlantic water from late winter until the time of investigation (about 3 months) was estimated to be 29±11 g C m−2. The uptake estimate has been compared with integrated air-sea flux calculated from the wind speed and the difference in fCO2 between the atmosphere and the ocean. The computed air-sea flux has been compared to estimates of new production, with the latter having a clearer trend of decreasing values with increasing latitude than for the air-sea flux. This could be explained by the decreasing surface water temperature with increasing latitude, indicating that cooling (increasing the solubility of CO2) is an important factor in driving the air-sea flux. This fact might be different if our study had been performed later in the season.

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