1,2,3,1,2,1,2- 1National Key Laboratory of Deep Space Exploration/School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
- 2CAS Center for Excellence in Comparative Planetology/CAS Key Laboratory of Geospace Environ-ment/Mengcheng National Geophysical Observatory, University of Science and Technology of China, Hefei 230026, China
- 3Hefei National Laboratory, University of Science and Technology of China, Hefei 230088, China
Understanding Jupiter's zonal winds is crucial for unraveling the dynamics of Jupiter’s atmosphere. Multiple facilities were used to derive zonal winds using various methods. Here, we develop a correlation-based method for the near-infrared data from the Cassini spacecraft to investigate zonal winds at different altitudes. The new method establishes the capability to process the Cassini/VIMS-IR spectral data with a low spatial/temporal resolution and a non-uniform cadence. By applying this method to the episode during 2001, January 15, 9:42 UT – January 16, 3:22 UT, we reveal the zonal winds at three different wavebands and latitudes as well as the wind vertical structure at the equator, showing significant vertical wind shear in the troposphere. The vertical wind shear we derived is weaker than reported in previous studies, highlighting the intricate interactions among multiple dynamical processes in Jupiter's atmosphere and reflecting the complexity of its atmospheric circulation. More observations in the future are essential to explore the underlying mechanisms in Jupiter's atmosphere.
How to cite: ma, S., Wang, Y., Li, T., Zhang, Q., Liu, J., and Zheng, R.: Jovian Zonal Winds Revealed from Cassini/VIMS Observations, EPSC-DPS Joint Meeting 2025, Helsinki, Finland, 7–12 Sep 2025, EPSC-DPS2025-143, https://doi.org/10.5194/epsc-dps2025-143, 2025.
