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Alta carga de aerosoles naturales sobre las selvas boreales.

P Tunved¹, H-C Hansson, V-M Kerminen

¹Department of Applied Environmental Science (ITM), Air Pollution Laboratory, Frescativägen 54, SE-106 91, Stockholm, Sweden. peter.tunved@itm.su.se

Science (New York, N.Y.)

|April 15, 2006

Resumen

El bosque boreal europeo contribuye significativamente a los aerosoles atmosféricos. Las emisiones forestales crean partículas climáticamente activas, lo que afecta las estimaciones del presupuesto de radiación y los ciclos de retroalimentación climática.

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Área de la Ciencia:

Química de la atmósfera química de la atmósfera
Ciencias del clima Ciencias del clima Ciencias del clima
Ciencias del medio ambiente Ciencias del medio ambiente.

Sus antecedentes:

Los aerosoles influyen significativamente en el equilibrio de radiación de la Tierra.
Comprender las fuentes de aerosoles es crucial para el modelado climático.
La contribución de aerosoles de la región boreal europea requiere más investigación.

Objetivo del estudio:

Investigar la región boreal europea como fuente de masa y número de aerosoles atmosféricos.
Establecer una relación entre las emisiones de monoterpenos y la formación de aerosoles en áreas de bajo impacto antropogénico.
Para cuantificar la población climáticamente relevante de aerosoles generados por los bosques.

Principales métodos:

Análisis de las concentraciones de masa y número de aerosol.
Estudios de correlación entre las emisiones de monoterpenos y la formación de aerosoles.
Mediciones de campo en la región boreal europea.

Principales resultados:

La región boreal europea se identifica como una fuente sustancial de aerosoles atmosféricos.
Se encontró una relación directa entre las emisiones de monoterpenos y la conversión de gas a partícula.
Los bosques generan 1000-2000 partículas / cm3 de tamaños climáticamente activos durante la temporada de crecimiento.

Conclusiones:

Los bosques boreales son importantes fuentes naturales de aerosoles climáticamente relevantes.
Estos hallazgos son críticos para refinar los cálculos del presupuesto de radiación atmosférica.
El estudio destaca la importancia de las emisiones de aerosoles biogénicos en los mecanismos de retroalimentación climática.