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Saturación del océano sur CO2 se hunde debido al cambio climático reciente
Corinne Le Quéré1, Christian Rödenbeck, Erik T Buitenhuis
1Max Planck Institut für Biogeochemie, Postfach 100164, D-07701 Jena, Germany. c.lequere@uea.ac.uk
Science (New York, N.Y.)
|May 19, 2007
Resumen
El Océano Austral El Océano Austral.
Área de la Ciencia:
- Ciencias del clima Ciencias del clima Ciencias del clima
- Oceanografía La oceanografía es la oceanografía.
- Química de la atmósfera química de la atmósfera
Sus antecedentes:
- El Océano Austral juega un papel crítico en el ciclo global del carbono.
- Los niveles de dióxido de carbono (CO2) en la atmósfera han estado aumentando debido a las actividades humanas.
- Comprender la capacidad del océano para absorber CO2 es vital para el modelado del cambio climático.
Objetivo del estudio:
- Para cuantificar los cambios en el sumidero de dióxido de carbono (CO2) del Océano Austral.
- Para investigar el impacto del aumento de los vientos del Océano Antártico en la absorción de CO2.
- Proyectar la eficiencia futura del sumidero de CO2 del Océano Austral.
Principales métodos:
- Utilizó las concentraciones de CO2 atmosférico observadas.
- Se empleó un método inverso para estimar el flujo de CO2.
- Analizó las tendencias en los vientos del Océano Austral y su correlación con la absorción de CO2.
Principales resultados:
- El sumidero de CO2 del Océano Austral se debilitó en 0.08 petagramos de carbono por año por década entre 1981 y 2004.
- Este debilitamiento se atribuye al aumento de los vientos del Océano Austral, impulsados por las actividades humanas.
- Las proyecciones futuras indican un aumento continuo en los vientos del Océano Austral.
Conclusiones:
- La eficiencia del sumidero de CO2 del Océano Austral ha disminuido a corto plazo.
- Este debilitamiento puede conducir a una mayor estabilización del CO2 atmosférico durante siglos.
- Los cambios inducidos por el hombre en los patrones de viento tienen un impacto significativo en el secuestro de carbono oceánico.
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