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  Topside ionosphere sounding from the CHAMP, GRACE, and GRACE‐FO missions

Schreiter, L., Stolle, C., Rauberg, J., Kervalishvili, G., van den Ijssel, J., Arnold, D., Xiong, C., Callegare, A. O. (2023 online): Topside ionosphere sounding from the CHAMP, GRACE, and GRACE‐FO missions. - Radio Science.
https://doi.org/10.1029/2022RS007552

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Schreiter, Lucas1, Autor              
Stolle, Claudia2, Autor
Rauberg, Jan3, Autor              
Kervalishvili, G.3, Autor              
van den Ijssel, Jose2, Autor
Arnold, Daniel2, Autor
Xiong, Chao2, Autor
Callegare, Andyara Oliveira3, Autor              
Affiliations:
11.1 Space Geodetic Techniques, 1.0 Geodesy, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146025              
2External Organizations, ou_persistent22              
32.3 Geomagnetism, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146030              

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Schlagwörter: DEAL Wiley
 Zusammenfassung: Satellites in Low Earth Orbit (LEO) are essential for sounding the topside ionosphere. In this work, we present and validate a data set of Total Electron Content (TEC) and in situ electron density observations from the Gravity Recovery And Climate Experiment (GRACE) and GRACE-Follow-On missionsas well as a TEC data set from the CHAllenging Minisatellite Payload (CHAMP) mission. Concerning TEC, special emphasis is put to ensure optimal consistency to the already existing Swarm and Gravity field and steady-state ocean circulation explorer (GOCE) TEC data sets. The newly processed satellite missions allow covering two full solar cycles with LEO slant TEC. Furthermore, the twin satellite missions GRACE and GRACE-FO equipped with inter-satellite K-band ranging allows to derive the horizontal TEC and, due to the small inter-satellite distance of the satellite pairs, an approximation for local electron density. However, the derived value of electron density is relative and requires calibration using external information. In this work, the calibration is performed using the IRI-2016 model. Radar observations, as well as in situ electron density observations available from Swarm B Langmuir probes, are used for validation. Conjunctions between satellites are used to validate the TEC time series. The newly derived data set is shown to be highly consistent with the already existing data sets with standard deviations below 3 TECU for TEC (even 1 TECU was reached for low solar flux) and an offset below 7 ⋅ 1010m−3 with a standard deviation near 1 ⋅ 1011m−3 for the electron density.

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 Datum: 2023-03-07
 Publikationsstatus: Online veröffentlicht
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1029/2022RS007552
OATYPE: Hybrid - DEAL Wiley
GFZPOF: p4 T1 Atmosphere
 Art des Abschluß: -

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Titel: Radio Science
Genre der Quelle: Zeitschrift, SCI, Scopus
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Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: - Identifikator: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals421
Publisher: American Geophysical Union (AGU)
Publisher: Wiley