Observations of sunlit N2+ aurora at high altitudes during the RENU2 flight

Autor: P. G. Ellingsen, D. Lorentzen, D. Kenward, J. H. Hecht, J. S. Evans, F. Sigernes, M. Lessard
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Annales Geophysicae, Vol 39, Pp 849-859 (2021)
Druh dokumentu: article
ISSN: 0992-7689
1432-0576
DOI: 10.5194/angeo-39-849-2021
Popis: We present measurements of sunlit aurora during the launch of the Rocket Experiment for Neutral Upwelling 2 (RENU2) on the 13 December 2015, 07:34 UTC. The in situ auroral conditions coincide with those of sunlit aurora and were characterised by the 391.4 and 427.8 nm N2+ emissions. A correlation between several auroral wavelengths, as measured by a meridian-scanning photometer, was used to detect sunlit aurora and indirectly neutral upwelling. These results, based on ground data, agree well with the RENU2 measurements recorded during its pass through the sunlit polar cusp. Using in situ data from RENU2 and the solar photon flux, it was estimated that the sunlit aurora was a major part (≈40 %) of the observed 427.8 nm emission.
Databáze: Directory of Open Access Journals
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