Volume 42 Issue 2
Mar.  2022
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Article Navigation >  Chinese Journal of Space Science  > 2022  >  42(2): 246-254
SU Ye, LI Jingyuan, LÜ Jianyong, WANG Ming, WEI Guanchun, SUN Meng, XIONG Shiping, LI Zheng. Modeling Study on the Response of the Thermospheric Vertical Winds to Geomagnetic Storm at Middle Latitudes (in Chinese). Chinese Journal of Space Science, 2022, 42(2): 246-254. DOI: 10.11728/cjss2022.02.210303023
Citation: SU Ye, LI Jingyuan, LÜ Jianyong, WANG Ming, WEI Guanchun, SUN Meng, XIONG Shiping, LI Zheng. Modeling Study on the Response of the Thermospheric Vertical Winds to Geomagnetic Storm at Middle Latitudes (in Chinese). Chinese Journal of Space Science, 2022, 42(2): 246-254. DOI: 10.11728/cjss2022.02.210303023
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Modeling Study on the Response of the Thermospheric Vertical Winds to Geomagnetic Storm at Middle Latitudes

doi: 10.11728/cjss2022.02.210303023

  • Institute of Space Weather, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044

  • Received Date: 2021-03-02
  • Accepted Date: 2021-05-13
  • Rev Recd Date: 2021-05-28
    • Available Online: 2022-05-25
    Abstract
  • Based on the simulation data of TIMEGCM, the influence of horizontal wind variations on middle-latitude vertical wind changes during the geomagnetic storms (100~650 km) on 10 September 2005 is studied. The model simulations were diagnostically analyzed, which is to investigate the causes of storm-time vertical wind changes. The results show that the vertical wind variations above 250 km depend on the changes of horizontal wind, and the vertical wind changes below 250 km are driven by the vertical wind at high altitudes. In the early initial phase of geomagnetic storms, the meridional winds have more significant influence on the vertical winds over 250 km than the zonal winds. As the storm evolves, the zonal winds contributed more to the changes of vertical wind. The responses of temperature variations to the geomagnetic storms are similar with horizontal wind changes. At the beginning of the initial phase, the temperature propagates faster along the longitude, and the meridional wind changes faster. As the storm evolves, the temperature propagates faster along the latitude, and the zonal wind changes faster.

     

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