Comparison of ICON-EUV F-Peak Characteristic Parameters with External Data Sources
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11214_2022_930_ReferencePDF.pdf
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Author(s)
Wautelet, Gilles
Hubert, Benoît
Gérard, Jean-Claude
Immel, Thomas J.
Sirk, Martin M.
Korpela, Eric J.
Stephan, Andrew W.
Mende, Stephen B.
England, Scott L.
Erickson, Philip J.
Date Issued
November 7, 2022
Publisher
Springer Netherlands
Citation
Space Science Reviews. 2022 Nov 07;218(8):62
Version
Author's final manuscript
Abstract
Abstract
We provide the first comparison of the ICON-EUV O+ density profile with radio wave datasets coming from GNSS radio-occultation, ionosondes and incoherent scatter radar. The peak density and height deduced from those different observation techniques are compared. It is found that the EUV-deduced peak density is smaller than that from other techniques by 50 to 60%, while the altitude of the peak is retrieved with a slight bias of 10 to 20 km on average. These average values are found to vary between November 2019 and March 2021. Magnetic latitude and local time are not factors significantly influencing this variability. In contrast, the EUV density is closer to that deduced from radio-wave techniques in the mid latitude region, i.e. where the ionospheric crests do not play a role. The persistent very low solar activity conditions prevailing during the studied time interval challenge the EUV O+ density profile retrieval technique. These values are consistent, both in magnitude and direction, with a systematic error on the order of 10% in the data or the forward model, or a combination of both. Ultimately, the EUV instrument on-board ICON provides the only known technique capable of precisely monitoring the ionospheric peak properties at daytime from a single space platform, on a global scale and at high cadence. This feature paves the way to transpose the technology to the study of the ionosphere surrounding other planets.
MIT Department
Haystack Observatory
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1007/s11214-022-00930-2
