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Las partículas de halita inyectadas en la estratosfera por la erupción de El Chichón en 1982
Resumen
Las partículas de halitas de la erupción de El Chichón probablemente influyeron en la química estratosférica. Estas partículas pueden haber liberado cloruro de hidrógeno, impactando potencialmente en el agotamiento de la capa de ozono.
Área de la Ciencia:
- Química de la estratosfera La química de la estratosfera se encuentra en la estratosfera.
- Ciencia de los aerosoles volcánicos.
- Química atmosférica La química atmosférica es la química de la atmósfera.
Sus antecedentes:
- La erupción de El Chichón de 1982 inyectó material significativo en la estratosfera.
- Comprender la composición y evolución de los aerosoles volcánicos es crucial para los estudios atmosféricos.
Objetivo del estudio:
- Para identificar y caracterizar las partículas de halita de la nube de erupción de El Chichón.
- Para investigar el papel potencial de estas partículas en los procesos químicos estratosféricos.
Principales métodos:
- Recopilación de partículas estratosféricas utilizando un impactador en cascada de microbalance de cristal de cuarzo.
- Análisis del tamaño y composición de las partículas.
- Correlación con las mediciones lidar de cloruro de hidrógeno y despolarización óptica.
Principales resultados:
- Se identificaron partículas de halita de aproximadamente 2 micrómetros de tamaño.
- Se observaron enriquecimientos en cloruro de hidrógeno y un aumento de la despolarización óptica, potencialmente vinculada a la halita.
- La evidencia sugiere que la halita reaccionó con el ácido sulfúrico, liberando cloruro de hidrógeno.
Conclusiones:
- Las partículas de halite de la erupción de El Chichón estaban presentes en la estratosfera inferior.
- Estas partículas pueden haber influido en los fenómenos atmosféricos observados, incluidas las concentraciones de cloruro de hidrógeno.
- La liberación de cloruro de hidrógeno de la halita podría contribuir a la destrucción catalítica del ozono en la estratosfera.
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