Volume 34 Issue 1
Jan.  2014
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Article Navigation >  Chinese Journal of Space Science  > 2014  >  34(1): 81-88
Wu Yuan, Li Jiawei, Zhang Xiaoxin, Wang Wenbin, ZHOU Lü, Li Chuanqi. Comparison and analysis of the thermospheric density between TIEGCM and CHAMP during a severe geomagnetic storm[J]. Chinese Journal of Space Science, 2014, 34(1): 81-88. doi: 10.11728/cjss2014.01.081
Citation: Wu Yuan, Li Jiawei, Zhang Xiaoxin, Wang Wenbin, ZHOU Lü, Li Chuanqi. Comparison and analysis of the thermospheric density between TIEGCM and CHAMP during a severe geomagnetic storm[J]. Chinese Journal of Space Science, 2014, 34(1): 81-88. doi: 10.11728/cjss2014.01.081
shu

Comparison and analysis of the thermospheric density between TIEGCM and CHAMP during a severe geomagnetic storm

doi: 10.11728/cjss2014.01.081
  • 1.

    School of Mathematics and Statistics, Nanjing University of Information Science and Technology, Nanjing 210044

  • 2.

    Science and Technology on Aerospace Flight Dynamics Laboratory, Beijing 100094

  • 3.

    National Center for Space Weather, China Meteorological Administration, Beijing 100081

  • 4.

    High Altitude Observatory, National Center for Atmospheric Research, Boulder, Colorado, USA

  • Received Date: 2013-03-07
  • Rev Recd Date: 2013-08-10
  • Publish Date: 2014-01-15
    Abstract
  • The thermospheric densities at the altitude of 410km during the geomagnetic storm on Nov. 20—21, 2003 are calculated by NCAR-TIEGCM model, and the results are compared and analyzed with the observational data from CHAMP/STAR. The results show that the model can exactly represent the distribution and variation of the density during geomagnetic storm, and the model results have a good consistency with the CHAMP data in trends and orders. But some differences do exist in detailed structure and magnitude. The model underestimated the increases of the density during geomagnetic storm with the values of 100%～125%, instead of the 250%～400% observed by CHAMP. The deviations between the model and CHAMP at high latitude are bigger than those of low latitude, and dayside bigger than nightside. It is also found that the density disturbance during geomagnetic storm presents day-night asymmetry and Southern-Northern hemisphere asymmetry. The model can exactly represent the propagation of the density disturbance from high latitude to low latitude, and the time delay in response of the density to geomagnetic storm.

     

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