Thermospheric Wind Observation and Simulation during the Nov 4, 2021 Geomagnetic Storm Event

Qian Wu, Dong Lin, Wenbin Wang, William Ward

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)79-86
Number of pages8
JournalJournal of Astronomy and Space Sciences
Volume39
Issue number3
DOIs
StatePublished - Sep 2022

Keywords

  • Fabry perot interferometer
  • Multiscale atmosphere geospace environment (mage) simulation
  • Thermospheric wind

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