Jovian Vortex Hunter：一个研究木星涡旋的公众科学项目
Jovian Vortex Hunter: a citizen science project to study Jupiter's vortices
AI总结：
本研究利用JunoCam数据和Zooniverse公众科学项目，构建了2018至2021年的木星涡旋目录，分析了涡旋的大小、位置和颜色属性，并推导出木星大气中最小Rossby变形长度约为1800公里且基本恒定。
摘要：
木星大气包含多种多样的涡旋，这些涡旋在不同的动力学区域中具有大范围的大小、颜色和形态。人们对这些涡旋的形成过程知之甚少，并且除了少数已知的长期存在的椭圆形涡旋（如大红斑和Oval BA）之外，涡旋的稳定性及其时间演化目前在很大程度上是未知的。在本研究中，我们使用JunoCam数据和Zooniverse上的一个公众科学项目，通过2018年5月至2021年9月的观测，得出了一个涡旋目录（其中一些具有重复观测），并分析了它们的相关属性，如大小、位置和颜色。我们发现不同颜色的涡旋（被划分为白色、红色、棕色和深色）在大小和它们在行星上的位置方面遵循截然不同的分布。我们以这些涡旋为代理，采用简化的稳定性准则，推导出该行星的最小Rossby变形长度约为1800公里。我们发现这个$L_d$值在整个大气中基本恒定，并且没有明显的经向梯度。
英文摘要：
The Jovian atmosphere contains a wide diversity of vortices, which have a large range of sizes, colors and forms in different dynamical regimes. The formation processes for these vortices is poorly understood, and aside from a few known, long-lived ovals, such as the Great Red Spot, and Oval BA, vortex stability and their temporal evolution are currently largely unknown. In this study, we use JunoCam data and a citizen-science project on Zooniverse to derive a catalog of vortices, some with repeated observations, through May 2018 to Sep 2021, and analyze their associated properties, such as size, location and color. We find that different colored vortices (binned as white, red, brown and dark), follow vastly different distributions in terms of their sizes and where they are found on the planet. We employ a simplified stability criterion using these vortices as a proxy, to derive a minimum Rossby deformation length for the planet of $\sim1800$ km. We find that this value of $L_d$ is largely constant throughout the atmosphere, and does not have an appreciable meridional gradient.
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