Artificial ionospheric Wave Number 4 structure below the F2 region due to the Abel retrieval of radio occultation measurements

We analyzed the effect of the Abel inversion on the wave number 4 (WN4) structure from the GPS radio occultation (RO)–measured electron densities by using the FORMOSAT-3/COSMIC (F-3/C) observations under the equinox condition. The Abel-retrieved electron density from both the F-3/C observations and the simulated results by an empirical model with an imposed WN4 structure in the F layer are investigated. It is found that the Abel inversion can reproduce the real WN4 structure well in the F2 layer. However, it will result in pseudo and reversed phase WN4 structure in the lower altitude (F1 and E layers). Quantitatively, relative ±15% WN4 signature in the F2 layer can produce ±40% artificial WN4 in the E and F1 layers. Analysis on the F-3/C data shows about ±15% WN4 signature in the F2 layer and ±50% WN4 with reversed-phase in the E and F1 layers. The F-3/C-observed WN4 structure in the E and F1 layers might be the combinations of the real WN4 signature and the artificial effects of Abel retrieval.

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Author Yue, Xinan
Schreiner, William
Rocken, Christian
Kuo, Ying-Hwa
Lei, Jiuhou
Publisher UCAR/NCAR - Library
Publication Date 2012-01-01T00:00:00
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T19:06:35.306313
Metadata Record Identifier edu.ucar.opensky::articles:17561
Metadata Language eng; USA
Suggested Citation Yue, Xinan, Schreiner, William, Rocken, Christian, Kuo, Ying-Hwa, Lei, Jiuhou. (2012). Artificial ionospheric Wave Number 4 structure below the F2 region due to the Abel retrieval of radio occultation measurements. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7bz67c0. Accessed 15 February 2025.

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