Global distribution of electron temperature from Swarm and its possible correction

0491788 - ÚFA 2019 RIV DE eng A - Abstrakt
Truhlík, Vladimír - Bilitza, D. - Richards, P. G. - Podolská, Kateřina - Třísková, Ludmila
Global distribution of electron temperature from Swarm and its possible correction.
Geophysical Research Abstracts. Vol. 20. Göttingen: European Geosciences Union, 2018. EGU2018-4367-1. E-ISSN 1607-7962.
[EGU General Assembly 2018. 08.04.2018-13.04.2018, Vienna]
Grant CEP: GA MŠMT(CZ) LTAUSA17100
Institucionální podpora: RVO:68378289
Klíčová slova: ionosphere * electron temperature * international reference ionosphere * Swarm satellites * Langmuir Probes * field line interhemispheric plasma flow (FLIP) model
Obor OECD: Fluids and plasma physics (including surface physics)
https://meetingorganizer.copernicus.org/EGU2018/EGU2018-9802.pdf

We have analyzed the global distribution of the electron temperature (Te) measured by the Langmuir Probes on
the Swarm satellites during the years 2014-2017. Comparisons between measured Te and the IRI (International
Reference Ionosphere) model (TBT-2012) are presented. We found that the global patterns of Te observed by
Swarm and predicted by IRI are similar, however, substantially differ in absolute values. The magnitude of the
differences between Swarm and IRI Te dependent on local time and latitude. The smallest differences are observed
at high latitudes where the Swarm Te is higher than the IRI Te by about 10%. The largest differences were found
at low and equatorial latitudes at nighttime, where the Swarm Te is more than 100% higher than the IRI prediction.
Therefore, the IRI Te model is used to correct the Swarm Te measurements by removing the bias as a function of
local time and latitude. The corrected global patterns of Te are analyzed with assistance of the physics based Field
Line Interhemispheric Plasma flow (FLIP) model and are also compared to other measurements (e.g., CHAMP,
FPMU onboard ISS etc.).
Trvalý link: http://hdl.handle.net/11104/0285417