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Estimación de las partículas de carbono orgánico en el océano a partir de la teledetección por satélite

Stramski¹, Reynolds, Kahru

¹Marine Physical Laboratory and Marine Research Division, Scripps Institution of Oceanography, University of California-San Diego, La Jolla, CA 92093-0238, USA.

Science (New York, N.Y.)

|July 10, 1999

Resumen

El carbono orgánico en partículas (COP) en el Océano Austral se correlaciona fuertemente con la retrodispersión de la luz. Esto permite a los datos satelitales de color del océano estimar el POC, revelando altas concentraciones cerca de la Zona Frente Polar Antártica.

Área de la Ciencia:

Oceanografía La oceanografía es la oceanografía.
La detección remota con sensores.
Biogeoquímica La biogeoquímica es la bioquímica.

Sus antecedentes:

El carbono orgánico en partículas (COP) es un componente clave de los ciclos biogeoquímicos marinos.
Las propiedades ópticas del agua de mar, como la retrodispersión, están influenciadas por la concentración de partículas.
Los datos de color del océano por satélite ofrecen una visión sinóptica de las propiedades de la superficie del océano.

Objetivo del estudio:

Establecer una relación entre el carbono orgánico en partículas (COP) y la retrodispersión óptica en el Océano Austral.
Desarrollar un algoritmo para estimar el POC de superficie a partir de datos de color del océano derivados de satélites.
Para analizar la distribución estacional y espacial de POC en el Océano Austral.

Principales métodos:

Mediciones in situ de la concentración de POC y la retrodispersión óptica.
Recuperación del coeficiente de retrodispersión a partir de datos de reflexión por teledetección.
Aplicación de un algoritmo a las imágenes satelitales (SeaWiFS) para la estimación de POC.

Principales resultados:

Se encontró una fuerte correlación entre la concentración de POC y la retrodispersión óptica.
Se desarrolló un algoritmo para estimar el POC de superficie utilizando datos satelitales de color del océano.
El análisis estacional reveló una banda zonal de POC elevado en diciembre dentro de la Zona Frente Polar Antártica.
La reserva total de POC en el Océano Austral (al sur de 40°S) superó las 0,8 gigatoneladas en diciembre.

Conclusiones:

La retrodispersión óptica es un indicador fiable de la concentración de COP en el Océano Austral.
La teledetección por satélite proporciona una herramienta valiosa para monitorear la dinámica de POC a gran escala.
Existen importantes poblaciones de POC en el Océano Antártico, particularmente asociadas con la Zona Frente Polar Antártica.

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