Depth of a strong jovian jet from a planetary-scale disturbance driven by storms
Depth of a strong jovian jet from a planetary-scale disturbance driven by storms
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风暴驱动的行星规模扰动产生的强烈木星喷流的深度
作者：
A. Sánchez‐Lavega;Glenn S. Orton;R. Hueso;E. García‐Melendo;S. Pérez;A. Simon;J. F. Rojas;J. M. Gómez;P. Yanamandra;L. N. Fletcher;J. Joels;J. Kemerer;J. Hora;E. Karkoschka;I. Pater;M. Wong;Philip Marcus;Noemi Pinilla;F. Carvalho;C. Go;D. Parker;M. Salway;M. Valimberti;A. Wesley;Zac Pujic
气态巨行星（木星和土星）的大气层中含有喷流，这些喷流在可见水平上主导着环流。这些喷流的动力来源（太阳辐射、内部热量或两者兼而有之）及其在上层云层下方的垂直结构是巨行星大气环流和气象学中的主要开放问题。几次观测和现场测量发现24巴深度的强风，并被解释为支持内部热源。这个问题仍然存在争议，部分原因是当地气象的影响。在这里，我们报告了木星大气中两个羽流的观测和建模，它们与最强的喷流在同一纬度（23° N）爆发。这些羽流达到了周围云层上方30公里的高度，移动速度比任何其他特征都快（169 m s-1），并在其尾迹中留下了包含红色气溶胶的湍流行星尺度扰动。在动力学模型的基础上，我们得出结论，数据是一致的，只有风，延伸远低于太阳辐射沉积的水平。
The atmospheres of the gas giant planets (Jupiter and Saturn) contain jets that dominate the circulation at visible levels. The power source for these jets (solar radiation, internal heat, or both) and their vertical structure below the upper cloud are major open questions in the atmospheric circulation and meteorology of giant planets. Several observations and in situ measurements found intense winds at a depth of 24 bar, and have been interpreted as supporting an internal heat source. This issue remains controversial, in part because of effects from the local meteorology. Here we report observations and modelling of two plumes in Jupiter’s atmosphere that erupted at the same latitude as the strongest jet (23° N). The plumes reached a height of 30 km above the surrounding clouds, moved faster than any other feature (169 m s-1), and left in their wake a turbulent planetary-scale disturbance containing red aerosols. On the basis of dynamical modelling, we conclude that the data are consistent only with a wind that extends well below the level where solar radiation is deposited.