Data for: Two-year observations of the Jupiter polar regions by JIRAM on board Juno

We observed the evolution of Jupiter’s polar cyclonic structures over two years between February 2017 and February 2019, using polar observations by the Jovian InfraRed Auroral Mapper, JIRAM, on the Juno mission. Images and spectra were collected by the instrument in the 5-µm wavelength range. The images were used to monitor the development of the cyclonic and anticyclonic structures at latitudes higher than 80° both in the northern and the southern hemispheres. Spectroscopic measurements were then used to monitor the abundances of the minor atmospheric constituents water vapor, ammonia, phosphine and germane in the polar regions, where the atmospheric optical depth is less than 1. Finally, we performed a comparative analysis with oceanic cyclones on Earth in an attempt to explain the spectral characteristics of the cyclonic structures we observe in Jupiter’s polar atmosphere. The data stored in this repository permit to reproduce the 12 figures presented in the paper. For most of the figure, data files have self explaining titles and are directly connected to the figures or the figure panels to which they refer. For the maps of figures 1, 2 and 3 there are 3 files for each map in the figures: the 3 files data respectively contain the 3 coordinates needed to rebuild the maps (latitude, longitude and optical depth). For figures from 6 to 10 there is a proper description in a text file on how the data can be used. Mat files of figure 12 are generated with MATLAB_R2018A.

本研究借助朱诺号（Juno）任务搭载的木星红外极光绘图仪（Jovian InfraRed Auroral Mapper，JIRAM）的极区观测数据，于2017年2月至2019年2月的两年间，对木星极区气旋结构的演化过程进行了观测。该仪器在5微米波段采集了图像与光谱数据：图像被用于监测南北半球纬度高于80°区域的气旋与反气旋结构的演化；光谱测量则用于监测大气光学厚度小于1的极区中，水蒸气、氨、磷化氢与锗烷等微量大气成分的丰度。最后，我们通过与地球海洋气旋开展对比分析，尝试解释木星极区大气中观测到的气旋结构的光谱特征。本存储库存储的数据可复现论文中的12幅插图。多数数据文件标题具有自解释性，可直接关联至其所对应的插图或子图。针对图1、图2和图3的地图数据，每幅地图对应3个数据文件，这三个文件分别包含重建地图所需的三类坐标：纬度、经度与光学厚度。针对图6至图10，配套文本文件中详细说明了数据的使用方法。图12对应的MAT文件由MATLAB_R2018A生成。