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Un efecto indirecto de onda larga de aerosoles climatológicamente significativo en el Ártico
Dan Lubin1, Andrew M Vogelmann
1Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093-0221, USA. dlubin@ucsd.edu
Nature
|January 27, 2006
Resumen
Los aerosoles antropogénicos calientan significativamente el Ártico al alterar las propiedades de las nubes. Esto Esto Esto Esto Esto Esto Esto
Área de la Ciencia:
- Ciencias del clima del Ártico Ciencias del clima del Ártico
- Química atmosférica La química atmosférica es la química de la atmósfera.
- La transferencia radiativa es la transferencia radiativa.
Sus antecedentes:
- El calentamiento del Ártico y la disminución del hielo marino están relacionados con los gases de efecto invernadero y las retroalimentaciones.
- Las nubes ejercen un efecto de calentamiento neto en el sistema climático ártico durante todo el año.
- Los aerosoles antropogénicos de latitudes más bajas impactan periódicamente en el Ártico.
Objetivo del estudio:
- Investigar el impacto de los aerosoles antropogénicos en las propiedades de las nubes del Ártico.
- Cuantificar el efecto radiativo de los cambios en las nubes inducidos por los aerosoles.
Principales métodos:
- Se utilizaron datos radiométricos de múltiples sensores.
- Se analizaron las interacciones aerosol-nube, específicamente el efecto "primer indirecto".
Principales resultados:
- Las concentraciones aumentadas de aerosoles alteran las propiedades microfísicas de las nubes árticas.
- Esta alteración conduce a un aumento promedio de 3.4 W/m2 en los flujos de onda larga de superficie.
- El efecto de calentamiento es comparable a los gases de efecto invernadero establecidos.
Conclusiones:
- Las interacciones entre aerosoles y nubes representan un mecanismo de calentamiento climatológicamente significativo en el Ártico.
- El "primer efecto indirecto" de los aerosoles juega un papel crucial en la dinámica del clima ártico.
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