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Estructura térmica y dinámica de las perturbaciones de primavera del norte de Saturno
Leigh N Fletcher1, Brigette E Hesman, Patrick G J Irwin
1Atmospheric, Oceanic and Planetary Physics, Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford, OX1 3PU, UK. fletcher@atm.ox.ac.uk
Science (New York, N.Y.)
|May 21, 2011
Resumen
Una tormenta masiva en Saturno en 2010-2011 alteró dramáticamente su atmósfera, creando cambios significativos de temperatura y afectando los vientos y la composición en todo el planeta.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Ciencias de la atmósfera Ciencias atmosféricas.
- La espectroscopia es una técnica de espectroscopia.
Sus antecedentes:
- Saturno exhibe una lenta evolución atmosférica estacional.
- Una tormenta brillante significativa estalló en el hemisferio norte de Saturno en 2010-2011.
Objetivo del estudio:
- Para investigar el impacto de la tormenta de Saturno 2010-2011 en las condiciones atmosféricas del planeta.
- Para analizar la extensión vertical y horizontal de la influencia de la tormenta.
Principales métodos:
- Utilizó espectroscopia infrarroja térmica para observar la atmósfera de Saturno.
- Se analizaron datos de temperatura, viento y composición en un amplio rango latitudinal.
Principales resultados:
- La tormenta causó perturbaciones atmosféricas a escala planetaria en el plazo de un mes.
- Los efectos penetraron desde la troposfera hasta la estratosfera (nivel de 1 milibar).
- Se observaron contrastes significativos de temperatura (16 Kelvin) y un hundimiento estratosférico, creando "balizas" de emisión infrarroja.
Conclusiones:
- La tormenta alteró sustancialmente la circulación atmosférica de Saturno, incluido el transporte vertical y los chorros zonales.
- Se generaron nuevos fenómenos atmosféricos, como un frío óvalo anticiclónico.
- El evento pone de relieve la naturaleza dinámica de la atmósfera de Saturno y su potencial para cambios rápidos a gran escala.
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