A planetary-scale disturbance in the most intense Jovian atmospheric jet from JunoCam and ground-based observations
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We describe a huge planetary-scale disturbance in the highest-speed Jovian jet at latitude 23.5°N that was first observed in October 2016 during the Juno perijove-2 approach. An extraordinary outburst of four plumes was involved in the disturbance development. They were located in the range of planetographic latitudes from 22.2° to 23.0°N and moved faster than the jet peak with eastward velocities in the range 155 to 175 m s 1. In the wake of the plumes, a turbulent pattern of bright and dark spots (wave number 20–25) formed and progressed during October and November on both sides of the jet, moving with speeds in the range 100–125 m s 1 and leading to a new reddish and homogeneous belt when activity ceased in late November. Nonlinear numerical models reproduce the disturbance cloud patterns as a result of the interaction between local sources (the plumes) and the zonal eastward jet.
CitationSanchez-Lavega, A., Rogers, J., Orton, G., Garcia-Melendo, E., Legarreta, J., Colas, F., Dauvergne, J., Hueso, R., Rojas, J., Perez-Hoyos, S., Mendikoa, I., Iñurrigarro, P., Gómez-Forrellad, J., Momary, T., Hansen, C., Eichstaedt, G., Miles, P., Wesley, A. A planetary-scale disturbance in the most intense Jovian atmospheric jet from JunoCam and ground-based observations. "Geophysical research letters", 25 Maig 2017, vol. 44, núm. 10, p. 4679-4686.