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El ciclo de El Niño: un oscilador natural del sistema de atmósfera del océano Pacífico
Science (New York, N.Y.)
|June 3, 1988
Resumen
El ciclo El Niño-Oscilación Sur (ENSO) puede ser un oscilador natural. La evidencia reciente sugiere que los acoplamientos simples entre la dinámica océano-atmósfera y las temperaturas de la superficie del mar en el Pacífico impulsan ENSO.
Área de la Ciencia:
- Oceanografía La oceanografía es la oceanografía.
- Ciencias de la atmósfera Ciencias atmosféricas.
- La dinámica del clima La dinámica del clima La dinámica del clima
Sus antecedentes:
- El Niño-Oscilación Sur (ENSO) tiene un impacto significativo en la variabilidad oceánica y atmosférica global.
- La cuasi-periodicidad de ENSO ha seguido siendo una característica poco comprendida a pesar de las investigaciones recientes.
- La comprensión de los mecanismos ENSO es crucial para predecir los patrones climáticos.
Objetivo del estudio:
- Para explicar la característica fundamental de la cuasi-periodicidad de ENSO.
- Presentar evidencia que apoye la hipótesis del oscilador acoplado natural para ENSO.
- Para esbozar los mecanismos propuestos que impulsan el ciclo ENSO.
Principales métodos:
- Revisión de la evidencia reciente de múltiples fuentes.
- Análisis de las interacciones océano-atmósfera.
- Examen de la dinámica de la temperatura de la superficie del mar en el Pacífico ecuatorial oriental.
Principales resultados:
- La evidencia reciente sugiere que ENSO funciona como un oscilador natural.
- Se identifican acoplamientos simples entre la circulación atmosférica tropical y la dinámica oceánica.
- Las temperaturas de la superficie del mar en el Pacífico ecuatorial oriental juegan un papel clave.
Conclusiones:
- Es probable que el ciclo ENSO sea impulsado por un mecanismo de oscilador acoplado natural.
- Este oscilador implica interacciones entre la atmósfera, la capa superior del océano y las temperaturas de la superficie del mar.
- La hipótesis proporciona un marco para comprender la naturaleza cuasi periódica de ENSO.
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