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Exploring the Effects of Atmospheric Forcings on Evaporation: Experimental Integration of the Atmospheric Boundary Layer and Shallow Subsurface
Published on: June 8, 2015
Relaciones inversas entre las cantidades de contaminación del aire y las precipitaciones orográficas
Daniel Rosenfeld1, Jin Dai, Xing Yu
1Institute of Earth Sciences, Hebrew University of Jerusalem, Jerusalem, Israel. daniel.rosenfeld@huji.ac.il
Science (New York, N.Y.)
|March 10, 2007
Resumen
La contaminación del aire reduce significativamente la precipitación en las colinas en un 30-50% durante las condiciones de bruma. Este impacto de las partículas en suspensión amenaza los recursos hídricos en las regiones montañosas a favor del viento, particularmente en China.
Área de la Ciencia:
- Ciencias del medio ambiente Ciencias del medio ambiente.
- Ciencias de la atmósfera Ciencias atmosféricas.
- Hidrología Hidrología Hidrología.
Sus antecedentes:
- La contaminación atmosférica por partículas está relacionada con la disminución de las tasas de precipitación en las zonas montañosas al viento de los centros urbanos.
- Las tendencias observadas muestran una disminución del 10-25% en la proporción de precipitación entre las colinas y las tierras bajas.
Objetivo del estudio:
- Para cuantificar la relación entre los aerosoles troposféricos libres y el aumento de la precipitación orográfica.
- Evaluar el impacto de la contaminación atmosférica en la disponibilidad de recursos hídricos en regiones montañosas.
Principales métodos:
- Las mediciones de aerosoles y precipitación se llevaron a cabo en Mt. Hua, en el centro de China.
- El análisis se centró en el factor de mejora de la precipitación orográfica bajo diferentes concentraciones de aerosoles.
Principales resultados:
- La precipitación en las colinas disminuyó en un 30-50% durante las condiciones de neblina (visibilidad <8 km).
- La contaminación por aerosoles reduce significativamente el factor de mejora de la precipitación orográfica.
Conclusiones:
- La contaminación atmosférica juega un papel fundamental en la reducción de los recursos hídricos en las zonas montañosas.
- Este fenómeno plantea un desafío significativo para la gestión del agua en China y a nivel mundial.
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