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Tendencias medidas en el ozono estratosférico
Science (New York, N.Y.)
|April 17, 1992
Resumen
Los niveles de ozono en el hemisferio norte muestran una tendencia a la baja, particularmente en la estratosfera inferior. Múltiples mediciones terrestres y por satélite confirman estos hallazgos, lo que indica un agotamiento significativo de la capa de ozono estratosférica.
Área de la Ciencia:
- Química y física de la atmósfera.
- La ciencia estratosférica es la ciencia de la estratosfera.
- Investigación de la capa de ozono.
Sus antecedentes:
- El agotamiento del ozono es una preocupación ambiental significativa.
- Comprender las tendencias del ozono es crucial para el modelado climático.
- Estudios previos indicaron posibles cambios en la capa de ozono.
Objetivo del estudio:
- Para analizar las tendencias recientes en las cantidades totales de la columna de ozono.
- Para investigar los cambios específicos de la altitud en la concentración de ozono.
- Para confirmar los hallazgos utilizando múltiples fuentes de datos.
Principales métodos:
- Análisis de los registros de ozono en tierra de 29 estaciones.
- Examen de los datos satelitales del Espectrómetro de Cartografía de Ozono Total (TOMS) y el Experimento de Aerosol y Gas Estratosférico (SAGE).
- Comparación de datos de múltiples instrumentos para la coherencia.
Principales resultados:
- Se confirmó una tendencia a la baja en la columna total de ozono sobre las latitudes medias del hemisferio norte en todas las estaciones.
- La concentración de ozono identificada disminuye en la estratosfera inferior, la región del pico de ozono.
- Los datos de varios instrumentos proporcionan una imagen consistente de los cambios en el ozono estratosférico.
Conclusiones:
- Los niveles de ozono estratosférico han disminuido de manera demostrable en las latitudes medias del hemisferio norte.
- Varias técnicas de medición independientes corroboran estos hallazgos.
- El agotamiento del ozono observado tiene implicaciones significativas para la salud atmosférica.
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