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https://doi.org/10.5194/egusphere-2025-2324
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/egusphere-2025-2324
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Preprints
03 Jun 2025
 | 03 Jun 2025
Status: this preprint is open for discussion and under review for Annales Geophysicae (ANGEO).

A statistical study of the O2Atm(0-0) aurora observed by the Swedish satellite MATS

Judit Pérez-Coll Jiménez, Nickolay Ivchenko, Ceona Lindstein, Lukas Krasauskas, Jonas Hedin, Donal Patrick Murtagh, Linda Megner, Björn Linder, and Jörg Gumbel

Abstract. This study conducts a statistical analysis of the aurora observed by the Swedish satellite MATS. MATS' main instrument is a telescope that performs limb imaging at six different wavelengths intervals, among them the 762 nm wavelength emission in the O2 atmospheric band. This emission, even though it can not be observed from the ground, plays a big role in the study of atmospheric airglow and aurora. Here, some auroral properties of this emission, such as peak altitude, geomagnetic location, and auroral intensity, are examined and compared to the global auroral activity indicator known as Kp-index. A total of 378 events are analyzed. An average geomagnetic latitude of 67.7° is found in both hemispheres, and an average peak altitude of 103 km is obtained. The peak altitude shows dependence on the magnetic local time. Auroral intensities of the order of 102–103 kR are observed.

How to cite. Pérez-Coll Jiménez, J., Ivchenko, N., Lindstein, C., Krasauskas, L., Hedin, J., Murtagh, D. P., Megner, L., Linder, B., and Gumbel, J.: A statistical study of the O2Atm(0-0) aurora observed by the Swedish satellite MATS, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2025-2324, 2025.
Received: 19 May 2025 – Discussion started: 03 Jun 2025
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
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Judit Pérez-Coll Jiménez, Nickolay Ivchenko, Ceona Lindstein, Lukas Krasauskas, Jonas Hedin, Donal Patrick Murtagh, Linda Megner, Björn Linder, and Jörg Gumbel

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Judit Pérez-Coll Jiménez, Nickolay Ivchenko, Ceona Lindstein, Lukas Krasauskas, Jonas Hedin, Donal Patrick Murtagh, Linda Megner, Björn Linder, and Jörg Gumbel
Judit Pérez-Coll Jiménez, Nickolay Ivchenko, Ceona Lindstein, Lukas Krasauskas, Jonas Hedin, Donal Patrick Murtagh, Linda Megner, Björn Linder, and Jörg Gumbel

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Short summary
This study uses images taken by the Swedish satellite MATS to conduct a statistical analysis of the molecular oxygen atmospheric band emissions in the aurora. This auroral emission can not be observed from the ground, making it one of the least understood auroral emissions. Our results provide a new dataset with information on the peak altitude, geomagnetic location, and auroral intensity of 378 events detected between February and April 2023.
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