EGU22-6455
https://doi.org/10.5194/egusphere-egu22-6455
EGU General Assembly 2022
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

JIRAM observations of Jupiter's upper troposphere

Davide Grassi1, Alessandro Mura1, Giuseppe Sindoni2, Alberto Adriani1, Sushil Atreya3, Gianrico Filacchione1, Leigh Fletcher4, Jonathan Lunine5, Maria Luisa Moriconi6, Glenn Orton7, Christina Plainaki2, Federico Tosi1, Angelo Olivieri2, Gerald Eichstaedt8, Candice Hansen9, Bianca Maria Dinelli6, Alessandra Migliorini1, Giuseppe Piccioni1, and Scott Bolton10
Davide Grassi et al.
  • 1INAF, IAPS, Roma, Italy (davide.grassi@inaf.it)
  • 2Agenzia Spaziale Italiana, Roma, Italy
  • 3Department of Climate and Space Sciences and Engineering, Univ. of Michigan, Ann Arbor, Michigan, USA
  • 4School of Physics and Astronomy, University of Leicester, UK
  • 5Cornell University, Ithaca, New York, USA
  • 6Istituto delle Scienze atmosferiche e del Clima, Consiglio Nazionale delle Ricerche, Bologna, Italy
  • 7Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
  • 8Independent Scholar, Stuttgart, Germany
  • 9Planetary Science Institute, Tucson, Arizona, USA
  • 10Southwest Research Institute, San Antonio, Texas, USA

The Jovian Infrared Auroral Mapper (JIRAM, a payload element of the NASA Juno mission to Jupiter) includes an infrared spectrometer covering the 2.0–5.0 μm range. After reviewing the main results on the conditions of upper troposhere derived from the solar-dominated 2.0–3.2 μm spectral range and presented in Grassi et al. 2021, we focus our discussion on open modeling issues and recent attempts to study these altitudes from data in the thermal-dominated 4.0-5.0 μm spectral range. We present also the results of an automatic classification of data performed on the basis of the HDBSCAN algorithm (McInnes et al. 2017). We show that similar spatial patterns are obtained either considering the coefficents of a PCA performed directly on spectra or on the physical parameters (clouds altitude, haze thickness) retrieved by the algorithm adopted in Grassi et al. 2021.

 

Grassi et al. 2021   doi:10.1093/mnras/stab740

McInnes et al. 2017   doi:10.21105/joss.00205

 

How to cite: Grassi, D., Mura, A., Sindoni, G., Adriani, A., Atreya, S., Filacchione, G., Fletcher, L., Lunine, J., Moriconi, M. L., Orton, G., Plainaki, C., Tosi, F., Olivieri, A., Eichstaedt, G., Hansen, C., Dinelli, B. M., Migliorini, A., Piccioni, G., and Bolton, S.: JIRAM observations of Jupiter's upper troposphere, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-6455, https://doi.org/10.5194/egusphere-egu22-6455, 2022.