Thermospheric Wind Observation and Simulation during the Nov 4, 2021 Geomagnetic Storm Event
Thermospheric wind observations from high to mid latitudes are compared with the newly developed Multiscale Atmosphere Geospace Environment (MAGE) model for the Nov 3–4 geomagnetic storm. The observation and simulation comparison shows a very good agreement and is better at high latitudes in gener...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Korean Space Science Society
2022-09-01
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| Series: | Journal of Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | http://janss.kr/journal/article.php?code=84157&list.php?m=1 |
| Summary: | Thermospheric wind observations from high to mid latitudes are compared with the newly developed Multiscale Atmosphere
Geospace Environment (MAGE) model for the Nov 3–4 geomagnetic storm. The observation and simulation comparison shows a
very good agreement and is better at high latitudes in general. We were able to identify a thermospheric poleward wind reduction
possibly linked to a northward turning of the Interplanetary Magnetic Field (IMF) at ~22 UT on Nov 3 and an enhancement of
the poleward wind to a southward turning near 10 UT on Nov 4 at high latitudes. An IMF southward turning may have led to an
enhancement of equatorward winds at Boulder, Colorado near midnight. Simultaneous occurrence of aurora may be associated
with an IMF By turning negative. The MAGE model wind simulations are consistent with observations in these cases. The results
show the model can be a very useful tool to further study the magnetosphere and ionosphere coupling on short time scales. |
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| ISSN: | 2093-5587 2093-1409 |