Moist Convective Storms on Saturn
arxiv(2024)
摘要
Convective storms (CS) on Saturn appear as bright clouds, irregular in shape
and rapidly changing over time, accompanied by lightning phenomena. They cover
a wide range of size scales, from 500 km or less and up to sizes that encircle
the planet. In this chapter we focus on medium or synoptic-scale events
(typical sizes 2,000 - 7,000 km) and planetary-scale major storms known as
Great White Spots (GWS). In general, the storms emerge in westward jets and in
the peak of the strong eastward equatorial jet. They have been observed
preferentially in the northern hemisphere and seem to occur in the same
latitude in intervals of 30 and 60 years coinciding with the times of maximum
insolation within the seasonal cycle. Moist convection models locate the origin
of the storms in the water clouds (at about 10 bars of pressure) and to some
extent in ammonia clouds, and their thermodynamics explain the possible
periodicity of the phenomena. Once triggered, the storms grow and expand, and
their interaction with the zonal wind system gives rise to anticyclonic ovals
and to disturbances that propagate zonally covering an entire latitude band in
the case of the GWS.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要