Elevated consumption of carbon relative to nitrogen in the surface ocean
Article Abstract:
The Redfield ratio puts the molar C:N ratio in the organic material exported to deeper waters from the euphotic zones in the ocean at 6.6. However, a study conducted on the C:N consumption ratio in coastal waters yielded time-series data showing that net organic carbon production in these areas are way above levels predicted based on the Redfield ratio and nitrate consumption. Similar deviations were found in certain North Atlantic regions during eutrophic periods. These indicate that extrapolations using the Redfield ratio can result in substantial underestimations of organic carbon export.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Influence of El Nino on the equatorial Pacific contribution to atmospheric CO2 accumulation
Article Abstract:
Spring and autumn multiannual measurements of the partial pressure of CO2 in the surface ocean and atmosphere in the equatorial Pacific region give a valuable insight into the impact of El Nino events on the size of the equatorial Pacific source of CO2. Spring flux data indicate significant interannual effects of El Nino on CO2 exchange in the equatorial Pacific. The total fall in CO2 outgassing from the equatorial oceans during the prolonged El Nino period of 1991 to 1994 was greater than during the severe El Nino of 1982 to 1983.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Quantification of decadal anthropogenic CO(sub2) uptake in the ocean based on dissolved inorganic carbon measurements
Article Abstract:
The amount of anthropogenic CO(sub2) sequestered by the ocean is usually estimated based on numerical ocean carbon-cycle models. The models often have marked differences, and the CO(sub2) flux must be verified by field measurements. Recent improvements in dissolved inorganic carbon (DIC) measurement methods have been used to reveal changes in DIC concentrations in the Indian Ocean between 1978 and 1995.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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