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Marte nubes de hielo de agua y precipitación
J A Whiteway1, L Komguem, C Dickinson
1Department of Earth and Space Science and Engineering, York University, Toronto, Ontario, Canada. whiteway@yorku.ca
Science (New York, N.Y.)
|July 4, 2009
Resumen
Marte Marte es el planeta Marte.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Ciencias de la atmósfera Ciencias atmosféricas.
- Física de las nubes Física de las nubes.
Sus antecedentes:
- La misión Phoenix observó nubes marcianas de hielo de agua.
- Las nubes se asemejan a las nubes cirrus de la Tierra.
- Las rachas de otoño indican la precipitación de cristales de hielo.
Objetivo del estudio:
- Investigar las nubes de hielo de agua de la atmósfera marciana.
- Comprender la formación de nubes y los procesos de precipitación.
- Caracterice el papel de la capa límite planetaria.
Principales métodos:
- Utilizó el instrumento LIDAR (Light Detection and Ranging) de la misión Phoenix.
- Se analizaron las mediciones de polvo atmosférico.
- Estructuras de nubes observadas y rayas de caída.
Principales resultados:
- Nubes de hielo de agua detectadas en la parte superior de la capa límite planetaria (PBL) y cerca del suelo.
- PBL fue bien mezclado hasta 4 km por convección diurna.
- Las nubes se formaban todas las noches a finales del verano a medida que las temperaturas disminuían.
Conclusiones:
- Las nubes de hielo de agua marcianas se forman cada noche a partir del vapor de agua mezclado hacia arriba.
- La convección y la turbulencia juegan un papel clave en la formación de nubes.
- Los ciclos de precipitación implican la formación de cristales de hielo y su caída a la superficie.
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