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La pérdida de ozono dentro del vórtice polar norte durante el invierno 1991-1992
Science (New York, N.Y.)
|August 27, 1993
Resumen
Los niveles de ozono disminuyeron en la parte inferior del vórtice polar norte debido al cloro reactivo, mientras que aumentaron a mayores altitudes. Este vórtice de aire redujo significativamente el ozono en latitudes medias.
Área de la Ciencia:
- Química de la atmósfera química de la atmósfera
- La dinámica de la capa de ozono
- Meteorología Polar Meteorología Polar
Sus antecedentes:
- El vórtice polar juega un papel crítico en la distribución del ozono estratosférico.
- Los compuestos reactivos de cloro son catalizadores conocidos para el agotamiento del ozono.
Objetivo del estudio:
- Para investigar los cambios en el ozono dependientes de la altitud dentro del vórtice polar norte.
- Comprender los mecanismos que impulsan las variaciones del ozono y su impacto en las latitudes medias.
Principales métodos:
- Mediciones in situ dentro del anillo exterior del vórtice polar norte.
- La recopilación de datos se extendió desde octubre de 1991 hasta marzo de 1992.
- Análisis de las concentraciones de ozono a diferentes altitudes.
Principales resultados:
- Se observó un perfil de ozono dependiente de la altitud dentro del vórtice.
- El ozono disminuyó en altitudes más bajas y aumentó significativamente en altitudes más altas.
- La afluencia de aire rico en ozono y la pérdida de ozono mediada por cloro reactivo se identificaron como procesos clave.
Conclusiones:
- El descenso del aire a través del cloro reactivo condujo al agotamiento del ozono en la base del vórtice.
- El aire empobrecido por ozono liberado del vórtice impactó significativamente el ozono de la columna de latitud media.
- La dinámica de los vórtices polares tiene implicaciones sustanciales para la distribución global del ozono.
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