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El transporte de masas oceánico por remolinos de mesoescala.

Zhengguang Zhang1, Wei Wang2, Bo Qiu3

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Los remolinos de mesoscala transportan significativamente la masa del océano, comparable a las corrientes principales. Este transporte impulsado por remolinos es crucial para comprender la circulación oceánica y la regulación climática.

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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
  • Dinámica de fluidos La dinámica de fluidos.

Sus antecedentes:

  • La circulación oceánica, incluido el transporte de calor y sal, es vital para la regulación climática global y la distribución de los recursos marinos.
  • Mientras que las corrientes a gran escala dominan el transporte de fluidos, los remolinos de mesoescala también juegan un papel en el movimiento de las parcelas de agua.

Objetivo del estudio:

  • Para cuantificar la contribución de los remolinos de mesoescala al transporte zonal de masas en el océano.
  • Para comparar el transporte inducido por los remolinos con los patrones de circulación oceánica establecidos.

Principales métodos:

  • Se utilizaron datos de altimetría por satélite para identificar y rastrear remolinos de mesoescala.
  • Datos de flotación de perfiles integrados del programa Argo para medir las propiedades y el movimiento de fluidos.
  • Conjuntos de datos combinados para calcular el transporte de masas zonal inducido por remolinos.

Principales resultados:

  • El transporte de masas zonal inducido por los remolinos puede alcanzar 30-40 sverdrups (Sv).
  • Este transporte significativo se observa principalmente en regiones subtropicales con flujos de fondo más débiles.
  • La magnitud del transporte de remolinos es comparable a la circulación a gran escala impulsada por el viento y la termohalina.

Conclusiones:

  • Los remolinos de mesoscala representan un componente sustancial, previamente subestimado, del transporte de masas oceánico.
  • Comprender la dinámica de los remolinos es esencial para el modelado preciso del clima y la predicción de la distribución de los recursos marinos.