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Updated: Jul 12, 2026

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Measurement of Aerosols Optical Thickness of the Atmosphere using the GLOBE Handheld Sun Photometer
Published on: May 29, 2019
Propiedades radiativas del aerosol de fondo: componente de absorción de la extinción
Resumen
Antecedentes globales del aerosol en el aire.
Área de la Ciencia:
- Ciencias de la atmósfera Ciencias atmosféricas.
- Ciencia de los aerosoles Ciencia de los aerosoles.
- La transferencia radiativa es la transferencia radiativa.
Sus antecedentes:
- Las propiedades ópticas de los aerosoles, incluidos los coeficientes de dispersión y absorción de luz, determinan el albedo de dispersión única.
- Una evaluación precisa de los impactos de los aerosoles en la transferencia de radiación atmosférica requiere mediciones continuas y simultáneas de estos coeficientes ópticos.
- La troposfera media marina remota es una región crítica para estudiar los efectos globales de los aerosoles.
Objetivo del estudio:
- Para medir continuamente los coeficientes de dispersión y absorción de luz en la troposfera media marina remota.
- Para determinar el albedo de dispersión simple del aerosol de fondo.
- Investigar las implicaciones de las propiedades ópticas medidas para los modelos de transferencia radiativa.
Principales métodos:
- Mediciones diarias y simultáneas de los coeficientes de dispersión y absorción de luz.
- Utilizó datos del Observatorio Mauna Loa para las mediciones de absorción de luz.
- Calculado el albedo de dispersión simple a partir de los coeficientes ópticos medidos.
Principales resultados:
- Los coeficientes de absorción de luz medidos en el Observatorio Mauna Loa fueron más altos de lo esperado.
- Se encontró que el albedo de dispersión única era inferior a los valores comúnmente utilizados en los modelos de transferencia radiativa.
- El hollín fue identificado como el probable absorbente primario de luz.
Conclusiones:
- Es probable que el hollín derivado de la combustión contribuya significativamente a la absorción de aerosoles de fondo.
- La dispersión hemisférica del material de combustión influye en las propiedades ópticas de los aerosoles.
- Los modelos actuales de transferencia radiativa pueden necesitar un ajuste basado en el albedo de dispersión única de aerosol observado.
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