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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
Observaciones directas del exceso de absorción solar por las nubes
Resumen
Las mediciones aéreas muestran que las nubes absorben mucha más radiación solar en los trópicos de lo que los modelos predicen. Esto sugiere una brecha significativa en la comprensión de las interacciones de radiación de las nubes y su impacto en el clima.
Área de la Ciencia:
- Ciencias de la atmósfera Ciencias atmosféricas.
- La transferencia radiativa es la transferencia radiativa.
- Física de las nubes Física de las nubes.
Sus antecedentes:
- La absorción de la radiación solar por las nubes es crucial para el presupuesto energético de la Tierra.
- Los modelos climáticos actuales a menudo subestiman los efectos radiativos de las nubes.
- Existen discrepancias entre las predicciones teóricas y el flujo solar observado en atmósferas nubladas.
Objetivo del estudio:
- Para investigar la discrepancia entre la absorción solar medida y modelada por las nubes tropicales.
- Para cuantificar la absorción solar anómala utilizando mediciones basadas en aviones.
- Para evaluar la precisión de los modelos actuales de interacción de radiación de nubes.
Principales métodos:
- Realizó un experimento de radiación de nubes in situ utilizando aviones apilados coordinados.
- Implementó instrumentación idéntica para mediciones precisas del flujo solar a varias alturas.
- Se analizaron los datos de flujo solar para determinar las relaciones de forzamiento de nubes en diferentes niveles atmosféricos.
Principales resultados:
- Las mediciones aéreas revelaron una absorción solar anormalmente grande por las nubes tropicales.
- La relación observada del forzamiento de la nube a 20 km de la superficie fue de 1,58.
- Esta relación se desvía significativamente del valor predicho por el modelo de 1.0.0.
Conclusiones:
- Hay una diferencia sustancial entre la absorción solar observada y la estimada teóricamente por las nubes.
- Los modelos actuales no representan adecuadamente la interacción entre las nubes y la radiación solar.
- Se necesita más investigación para mejorar la comprensión y el modelado de los procesos radiativos de las nubes.
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