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La circulación nocturna de la atmósfera de Venus
Kiichi Fukuya1, Takeshi Imamura2, Makoto Taguchi3
1Department of Earth and Planetary Science, The University of Tokyo, Tokyo, Japan.
Nature
|July 22, 2021
Resumen
Venus también.
Área de la Ciencia:
- Ciencias planetarias
- Ciencias atmosféricas
- Aeronomía
Sus antecedentes:
- La circulación atmosférica de Venus es poco conocida, especialmente en el lado nocturno.
- Los estudios anteriores carecían de datos completos sobre el viento en todas las horas locales.
- Comprender la dinámica atmosférica de Venus es clave para comprender la evolución del planeta terrestre.
Objetivo del estudio:
- Para caracterizar la circulación atmosférica de Venus, incluidas las mareas térmicas y la circulación de Hadley.
- Para investigar las causas de la súper rotación atmosférica de Venus.
- Para proporcionar un conjunto completo de datos de viento para las nubes de Venus.
Principales métodos:
- Utilizó imágenes infrarrojas térmicas del orbitador Akatsuki Venus.
- Utilizó técnicas de seguimiento de nubes para determinar la velocidad del viento a aproximadamente 65 km de altitud.
- Recogí datos en todas las horas locales, incluyendo el lado nocturno.
Principales resultados:
- Se observaron flujos prominentes hacia el ecuador en el lado nocturno de Venus.
- Determinó la estructura de velocidad de las mareas térmicas sin la influencia de la circulación de Hadley.
- Encontró que la amplitud de la marea semidiurna es suficiente para mantener la súper rotación atmosférica.
Conclusiones:
- La rama hacia los polos de la circulación de Hadley está por encima de las nubes, y la rama hacia el ecuador está dentro de las nubes.
- Las mareas térmicas juegan un papel importante en el mantenimiento de la súper rotación atmosférica de Venus.
- Estos hallazgos ofrecen información sobre la súper rotación atmosférica en otros cuerpos celestes.
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