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Updated: Jul 12, 2026

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Measuring Carbon-based Contaminant Mineralization Using Combined CO2 Flux and Radiocarbon Analyses
Published on: October 21, 2016
Absorción oceánica de combustibles fósiles CO2: Evidencia del carbono 13 en el océano
Resumen
El Océano Pacífico absorbió 2,1 gigatoneladas de dióxido de carbono (CO2) anualmente entre 1970 y 1990, principalmente de los combustibles fósiles. Esto indica que los océanos son el principal sumidero de CO2, sin una liberación significativa de la biosfera.
Área de la Ciencia:
- Oceanografía La oceanografía es la oceanografía.
- Ciencias del clima Ciencias del clima Ciencias del clima
- Biogeoquímica La biogeoquímica es la bioquímica.
Sus antecedentes:
- El valor delta ((13) C del carbono inorgánico disuelto en las aguas superficiales del Océano Pacífico disminuyó en 0,4 por mil entre 1970 y 1990.
- Este desplazamiento isotópico se atribuye a la absorción de dióxido de carbono atmosférico (CO2) originado por la combustión de combustibles fósiles y la deforestación.
Objetivo del estudio:
- Cuantificar las cantidades netas de CO2 absorbidas por los océanos y liberadas por la biosfera entre 1970 y 1990.
- Determinar el papel del océano como sumidero de carbono y evaluar la liberación de CO2 de la biosfera durante este período.
Principales métodos:
- Análisis de los cambios en la concentración de CO2 atmosférico.
- La medición del delta ((13) C del CO2 atmosférico ((2).
- Evaluación del valor delta (((13) C del carbono inorgánico disuelto en el océano.
Principales resultados:
- El promedio calculado de absorción neta oceánica de CO2 fue de 2,1 gigatoneladas de carbono por año.
- Los datos isotópicos indican que el océano es el sumidero neto dominante para el CO2 antropogénico.
Conclusiones:
- El océano juega un papel crítico en la mitigación de los aumentos de CO2 atmosférico.
- No se detectó una liberación neta significativa de CO2 de la biosfera durante el período de estudio de 20 años.
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