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Assessing the Particulate Matter Removal Abilities of Tree Leaves
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Reducción de la nubosidad tropical por el hollín
1NASA Ames Research Center, Moffett Field, CA 94035, USA. University of Colorado, Boulder, CO 80309, USA. Lawrence Livermore National Laboratory, Livermore, CA 94551, USA. National Center for Atmospheric Research, Boulder, CO 80301, USA.
Science (New York, N.Y.)
|May 12, 2000
Resumen
Las concentraciones aumentadas de aerosoles suelen enfriar el clima. Sin embargo, este estudio revela que los aerosoles pueden, paradójicamente, reducir la cobertura de nubes, compensando los efectos de enfriamiento a nivel regional.
Área de la Ciencia:
- Ciencias de la atmósfera Ciencias atmosféricas.
- Ciencias del clima Ciencias del clima Ciencias del clima Ciencias del clima
- Física de las nubes Física de las nubes.
Sus antecedentes:
- La contaminación por aerosoles se entiende convencionalmente para enfriar el clima global.
- Este enfriamiento se produce a través del aumento del albedo de la nube, el tamaño de las gotas y el contenido de agua.
Objetivo del estudio:
- Investigar un mecanismo alternativo donde los aerosoles reduzcan la cobertura de nubes.
- Para demostrar cómo esto puede compensar el enfriamiento radiativo inducido por aerosoles regionales.
Principales métodos:
- Utilizando simulaciones de modelos para analizar las interacciones aerosol-nube.
- Centrándose en la compensación diurna de las nubes acumuladas de comercio.
Principales resultados:
- Los aerosoles pueden acelerar e intensificar la limpieza diurna de las nubes de cumulus comerciales.
- El calentamiento solar de la neblina oscura exacerba este efecto de reducción de la nube.
Conclusiones:
- Los aerosoles pueden ejercer una influencia de calentamiento regional al disminuir la cobertura de nubes.
- Esto contrarresta el efecto de enfriamiento neto esperado de la contaminación por aerosoles.
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