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El registro satelital a largo plazo revela una probable tendencia reciente de aerosoles
Michael I Mishchenko1, Igor V Geogdzhayev, William B Rossow
1NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, USA. mmishchenko@giss.nasa.gov
Science (New York, N.Y.)
|March 17, 2007
Resumen
El grosor óptico global del aerosol probablemente disminuyó en 0.03 entre 1991 y 2005. Esta tendencia puede explicar el aumento observado en la radiación solar y los cambios climáticos recientes en la superficie de la Tierra.
Área de la Ciencia:
- Ciencias de la atmósfera ciencia atmosférica.
- Ciencias del clima ciencia del clima.
- Ciencias de la Tierra Ciencias de la Tierra
Sus antecedentes:
- Los aerosoles troposféricos influyen significativamente en el equilibrio radiativo de la Tierra.
- El monitoreo a largo plazo de las propiedades ópticas de los aerosoles es crucial para comprender la dinámica climática.
Objetivo del estudio:
- Para analizar las tendencias en el grosor óptico global de aerosoles utilizando datos a largo plazo.
- Para investigar la relación entre los cambios en los aerosoles y la radiación solar en la superficie.
Principales métodos:
- Análisis del conjunto de datos del Proyecto de Climatología Global de Aerosol.
- Examen de las tendencias del grosor óptico del aerosol de 1991 a 2005.
- Análisis de correlación con flujos de radiación solar.
Principales resultados:
- Se observó una probable disminución en el grosor óptico del aerosol troposférico global de hasta 0,03.
- Esta disminución coincidió con un aumento global concurrente en los flujos de radiación solar en la superficie de la Tierra.
Conclusiones:
- La reducción observada en el grosor óptico del aerosol puede haber contribuido al aumento de la radiación solar superficial.
- Estos cambios en los aerosoles potencialmente influyeron en los recientes cambios climáticos en la superficie.
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