Characterization and Sensitivity Analysis of JIRAM Spectra for Optimizing CH4 and Retrieval
Since the Juno spacecraft started orbiting around Jupiter in 2016, our understanding of the planet has continued to expand. One of the mission’s primary scientific objectives was to delve into the mechanisms governing the complex aurorae at Jupiter’s poles, leading to significant progress. The Jovia...
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IOP Publishing
2025-01-01
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| Series: | The Planetary Science Journal |
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| Online Access: | https://doi.org/10.3847/PSJ/adbff8 |
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| author | Chiara Castagnoli Bianca M. Dinelli Francesca Altieri Alessandra Migliorini Alessandro Mura Roberto Sordini Federico Tosi Raffaella Noschese Davide Grassi Alberto Adriani Francesco Biagiotti Andrea Cicchetti Christina Plainaki Giuseppe Sindoni |
| author_facet | Chiara Castagnoli Bianca M. Dinelli Francesca Altieri Alessandra Migliorini Alessandro Mura Roberto Sordini Federico Tosi Raffaella Noschese Davide Grassi Alberto Adriani Francesco Biagiotti Andrea Cicchetti Christina Plainaki Giuseppe Sindoni |
| author_sort | Chiara Castagnoli |
| collection | DOAJ |
| description | Since the Juno spacecraft started orbiting around Jupiter in 2016, our understanding of the planet has continued to expand. One of the mission’s primary scientific objectives was to delve into the mechanisms governing the complex aurorae at Jupiter’s poles, leading to significant progress. The Jovian InfraRed Auroral Mapper (JIRAM), on board the Juno mission and composed of an imager and a spectrometer, strongly contributed to advancing in the field. Throughout the mission, the imager has provided detailed monitoring of auroral morphology in the infrared, while the spectrometer has enabled us to derive the temperature and concentration of H ${}_{3}^{+}$ and the distribution of CH _4 across the planet. Despite the extended data volume provided by the spectrometer, only a small fraction of its observations have been analyzed so far, due to the intricate nature of JIRAM spectra, which pose challenges in modeling the observed signal. As new scientific goals have emerged, further investigation into these data is needed to enhance their characterization. In this study, we present several sensitivity tests on JIRAM spectra, with a specific emphasis on observations taken at nadir. Our aim is to characterize the criticalities of these data and assess the implications for further data analyses using inversion techniques. This research is intended as a valuable reference for future JIRAM spectra exploitation, outlining strategies used to address challenges arising from the nature of the data and identifying areas that still require further investigation. |
| format | Article |
| id | doaj-art-d7cd07135e2e49a3a2b2ac8209feaf2b |
| institution | DOAJ |
| issn | 2632-3338 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Planetary Science Journal |
| spelling | doaj-art-d7cd07135e2e49a3a2b2ac8209feaf2b2025-08-20T03:07:41ZengIOP PublishingThe Planetary Science Journal2632-33382025-01-01649310.3847/PSJ/adbff8Characterization and Sensitivity Analysis of JIRAM Spectra for Optimizing CH4 and RetrievalChiara Castagnoli0https://orcid.org/0000-0001-5396-5306Bianca M. Dinelli1https://orcid.org/0000-0002-1218-0008Francesca Altieri2https://orcid.org/0000-0002-6338-8300Alessandra Migliorini3https://orcid.org/0000-0001-7386-9215Alessandro Mura4https://orcid.org/0000-0002-4552-4292Roberto Sordini5https://orcid.org/0000-0002-2242-6147Federico Tosi6https://orcid.org/0000-0003-4002-2434Raffaella Noschese7https://orcid.org/0000-0003-0502-0337Davide Grassi8https://orcid.org/0000-0003-1653-3066Alberto Adriani9https://orcid.org/0000-0003-4998-8008Francesco Biagiotti10https://orcid.org/0009-0004-9303-752XAndrea Cicchetti11https://orcid.org/0000-0002-9588-6531Christina Plainaki12https://orcid.org/0000-0003-1483-5052Giuseppe Sindoni13https://orcid.org/0000-0002-3348-7930Institute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.it; Institute of Atmospheric Sciences and Climate , National Research Council (CNR—ISAC), Bologna, Italy; University of Rome Tor Vergata , Rome, ItalyInstitute of Atmospheric Sciences and Climate , National Research Council (CNR—ISAC), Bologna, ItalyInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.itInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.itInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.itInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.itInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.itInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.itInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.itInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.itInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.it; Sapienza University of Rome , Rome, ItalyInstitute for Space Astrophysics and Planetology , National Institute for Astrophysics (INAF—IAPS), Rome, Italy ; chiara.castagnoli@inaf.itItalian Space Agency (ASI) , Rome, ItalyItalian Space Agency (ASI) , Rome, ItalySince the Juno spacecraft started orbiting around Jupiter in 2016, our understanding of the planet has continued to expand. One of the mission’s primary scientific objectives was to delve into the mechanisms governing the complex aurorae at Jupiter’s poles, leading to significant progress. The Jovian InfraRed Auroral Mapper (JIRAM), on board the Juno mission and composed of an imager and a spectrometer, strongly contributed to advancing in the field. Throughout the mission, the imager has provided detailed monitoring of auroral morphology in the infrared, while the spectrometer has enabled us to derive the temperature and concentration of H ${}_{3}^{+}$ and the distribution of CH _4 across the planet. Despite the extended data volume provided by the spectrometer, only a small fraction of its observations have been analyzed so far, due to the intricate nature of JIRAM spectra, which pose challenges in modeling the observed signal. As new scientific goals have emerged, further investigation into these data is needed to enhance their characterization. In this study, we present several sensitivity tests on JIRAM spectra, with a specific emphasis on observations taken at nadir. Our aim is to characterize the criticalities of these data and assess the implications for further data analyses using inversion techniques. This research is intended as a valuable reference for future JIRAM spectra exploitation, outlining strategies used to address challenges arising from the nature of the data and identifying areas that still require further investigation.https://doi.org/10.3847/PSJ/adbff8Upper atmosphereJupiterInfrared spectroscopy |
| spellingShingle | Chiara Castagnoli Bianca M. Dinelli Francesca Altieri Alessandra Migliorini Alessandro Mura Roberto Sordini Federico Tosi Raffaella Noschese Davide Grassi Alberto Adriani Francesco Biagiotti Andrea Cicchetti Christina Plainaki Giuseppe Sindoni Characterization and Sensitivity Analysis of JIRAM Spectra for Optimizing CH4 and Retrieval The Planetary Science Journal Upper atmosphere Jupiter Infrared spectroscopy |
| title | Characterization and Sensitivity Analysis of JIRAM Spectra for Optimizing CH4 and Retrieval |
| title_full | Characterization and Sensitivity Analysis of JIRAM Spectra for Optimizing CH4 and Retrieval |
| title_fullStr | Characterization and Sensitivity Analysis of JIRAM Spectra for Optimizing CH4 and Retrieval |
| title_full_unstemmed | Characterization and Sensitivity Analysis of JIRAM Spectra for Optimizing CH4 and Retrieval |
| title_short | Characterization and Sensitivity Analysis of JIRAM Spectra for Optimizing CH4 and Retrieval |
| title_sort | characterization and sensitivity analysis of jiram spectra for optimizing ch4 and retrieval |
| topic | Upper atmosphere Jupiter Infrared spectroscopy |
| url | https://doi.org/10.3847/PSJ/adbff8 |
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