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Disminución de la capacidad de absorción de CO2 en una cuenca del Océano Ártico libre de hielo.

Wei-Jun Cai1, Liqi Chen, Baoshan Chen

  • 1Department of Marine Sciences, University of Georgia, Athens, GA 30602, USA. wcai@uga.edu

Science (New York, N.Y.)
|July 24, 2010
PubMed
Resumen
Este resumen es generado por máquina.

Es posible que el Océano Ártico no se convierta en un sumidero significativo de dióxido de carbono (CO2) como se pensaba anteriormente. Estudios recientes muestran niveles más altos de CO2 en la cuenca de Canadá, lo que impide una mayor absorción de CO2 atmosférico.

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Área de la Ciencia:

  • Oceanografía La oceanografía es la oceanografía.
  • Ciencias del clima Ciencias del clima Ciencias del clima Ciencias del clima
  • Biogeoquímica La biogeoquímica es la bioquímica.

Sus antecedentes:

  • Se prevé que el Océano Ártico absorba más dióxido de carbono atmosférico (CO2) debido al derretimiento del hielo marino y al aumento de la productividad primaria.
  • Las predicciones anteriores se basaron en datos de márgenes productivos o áreas cubiertas de hielo antes de una retirada significativa del hielo.

Objetivo del estudio:

  • Para investigar la concentración de CO2 de la superficie del mar en la cuenca de Canadá utilizando encuestas de alta resolución.
  • Reevaluar el papel del Océano Ártico como sumidero de carbono en condiciones libres de hielo.

Principales métodos:

  • Estudio de alta resolución de la concentración de CO2 en la superficie del mar.
  • Comparación con las observaciones históricas.

Principales resultados:

  • Se observó un aumento significativo en la concentración de CO2 de la superficie del mar en la cuenca de Canadá en comparación con los datos anteriores.
  • Se identificó la rápida invasión de CO2 de la atmósfera y la limitada extracción biológica de CO2 como los principales impulsores.
  • Los niveles más altos de CO2 actúan como una barrera para una mayor absorción de CO2 atmosférico.

Conclusiones:

  • Es posible que la cuenca del Océano Ártico no funcione como un sumidero de CO2 atmosférico sustancial bajo futuras condiciones libres de hielo.
  • La comprensión actual de la capacidad de secuestro de carbono del Océano Ártico necesita una revisión.