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Variabilidad interanual en el sumidero de carbono del Océano Atlántico Norte
Nicolas Gruber1, Charles D Keeling, Nicholas R Bates
1Institute of Geophysics and Planetary Physics and Department of Atmospheric Sciences, University of California, Los Angeles, CA 90095, USA. ngruber@igpp.ucla.edu
Science (New York, N.Y.)
|December 21, 2002
Resumen
El Océano Atlántico Norte es el Océano Atlántico Norte.
Área de la Ciencia:
- Oceanografía La oceanografía es la oceanografía.
- Ciencias del clima Ciencias del clima Ciencias del clima
- Investigación del ciclo del carbono.
Sus antecedentes:
- El Atlántico Norte es un sumidero oceánico significativo para el dióxido de carbono atmosférico.
- La variabilidad temporal de este sumidero de carbono es poco conocida.
- Comprender los sumideros de carbono es crucial para la mitigación del cambio climático.
Objetivo del estudio:
- Para investigar la variabilidad temporal del sumidero de carbono oceánico del Atlántico Norte.
- Identificar los principales impulsores de la variabilidad del carbono en la parte superior del océano.
- Para evaluar el impacto potencial en toda la cuenca de la variabilidad observada.
Principales métodos:
- Análisis de una serie temporal de 18 años de observaciones de carbono inorgánico del océano superior.
- Utilizando datos del noroeste subtropical del Atlántico Norte cerca de las Bermudas.
- Correlación de la variabilidad del carbono con las profundidades de las capas mixtas en invierno y las anomalías de la temperatura de la superficie del mar.
Principales resultados:
- Se observó una variabilidad sustancial año tras año en el sumidero de carbono del Atlántico Norte.
- Se identificaron las profundidades de las capas mixtas en invierno y las anomalías de la temperatura de la superficie del mar como factores primarios.
- Las variaciones exhiben un patrón en toda la cuenca vinculado a la Oscilación del Atlántico Norte (NAO).
Conclusiones:
- La fuerza del sumidero de carbono del Atlántico Norte muestra una variabilidad temporal significativa.
- La Oscilación del Atlántico Norte (NAO) probablemente coordina esta variabilidad en toda la cuenca.
- La variabilidad estimada en la resistencia del sumidero de carbono es de aproximadamente +/-0.3 petagramos de carbono por año, casi +/-50%.
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