Una llovizna de metano en el Titán
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Tetsuya Tokano1, Christopher P McKay, Fritz M Neubauer
1Institut für Geophysik und Meteorologie, Universität zu Köln, Albertus-Magnus-Platz, 50923 Köln, Germany. tokano@geo.uni-koeln.de
Nature
|July 28, 2006
Resumen
El titán Titan es un titán.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Ciencias de la atmósfera Ciencias atmosféricas.
- Astrobiología Astrobiología.
Sus antecedentes:
- Titán exhibe características fluviales, lo que sugiere un ciclo hidrológico basado en el metano.
- Las investigaciones anteriores se centraron en eventos esporádicos de nubes, dejando la naturaleza de las nubes persistentes y la precipitación desconocida.
Objetivo del estudio:
- Para investigar la presencia y las características de las nubes no convectivas en Titán.
- Para determinar si estas nubes producen precipitación y su papel en el ciclo de metano de Titán.
Principales métodos:
- Análisis de datos in situ sobre la concentración de metano y los perfiles de temperatura en la troposfera de Titán.
Principales resultados:
- Se encontraron evidencias de nubes estratiformes estratificadas y ópticamente delgadas en la atmósfera de Titán.
- Identificó una nube de hielo de metano superior y una nube de metano líquido-nitrógeno inferior.
- La capa inferior de nubes produce llovizna que llega a la superficie de Titán.
Conclusiones:
- Las nubes casi permanentes y no convectivas son sostenidas por la circulación atmosférica global.
- La precipitación de metano ocurre globalmente donde el movimiento ascendente está presente.
- Esta llovizna persistente influye significativamente en la geología de la superficie de Titán a través de la humedad generalizada.
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