Jupiter Cloud Composition, Stratification, Convection, and Wave Motion: A View from New Horizons
Jupiter Cloud Composition, Stratification, Convection, and Wave Motion: A View from New Horizons
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木星云的组成、分层、对流和波动：新视野的视角
作者：
D. Reuter;A. Simon;A. Lunsford;K. Baines;A. Cheng;D. Jennings;C. Olkin;J. Spencer;S. Stern;H. Weaver;L. Young
新视野号宇宙飞船上的仪器对木星大气层的几次观测对木星天气层的稳定性和动力学有影响。旅行者号首次观测到的中尺度波的空间分辨率为11至45公里。这些波的波长为300公里，相速度比当地纬向流每秒大100米，远高于模型预测的速度。此外，以200至140公里的空间分辨率对木星连续五次自转进行的红外光谱测量表明，在大气层强烈上升流的区域，存在着短暂的氨冰云（寿命为40小时或更短）。这两种现象都是对可见云顶以下大气动力学的探测。
Several observations of Jupiter's atmosphere made by instruments on the New Horizons spacecraft have implications for the stability and dynamics of Jupiter's weather layer. Mesoscale waves, first seen by Voyager, have been observed at a spatial resolution of 11 to 45 kilometers. These waves have a 300-kilometer wavelength and phase velocities greater than the local zonal flow by 100 meters per second, much higher than predicted by models. Additionally, infrared spectral measurements over five successive Jupiter rotations at spatial resolutions of 200 to 140 kilometers have shown the development of transient ammonia ice clouds (lifetimes of 40 hours or less) in regions of strong atmospheric upwelling. Both of these phenomena serve as probes of atmospheric dynamics below the visible cloud tops.