Simulation study of a positive ionospheric storm phase observed at Millstone Hill
Simulation study of a positive ionospheric storm phase observed at Millstone Hill
复制标题
在磨石山观测到的正电离层风暴阶段的模拟研究
DOI：
10.1029/2005gl024973
复制
发表时间：
2005
影响因子：
5.2
通讯作者：
Chaosong Huang
中科院分区：
文献类型：
--
作者：
M. Swisdak;J. Huba;G. Joyce;Chaosong Huang
NRL电离层模式SAMI2的模拟结果表明，在2004年4月3日开始的地磁风暴期间，磨石山上空F区的变化主要是由于一个长期持续的向东电场的影响，正如C. Huang等人先前提出的[2005]。对风暴日的模拟与观测结果吻合较好，结果表明，与前一个平静日的电离层相比，F区峰值电子密度（NmF2）增加了约2倍，峰值电子密度高度（hmF2）上升了约80 km， F区电子温度下降了约1000 K。在进一步的模拟中，中性大气和风或电场被安静的白天所取代，这清楚地表明，电场在产生这些效应方面发挥了主导作用，尽管不是唯一的作用。
Simulation results from the NRL ionospheric model SAMI2 indicate that the changes in the F‐region over Millstone Hill during the geomagnetic storm beginning on 3 April 2004 are primarily due to the influence of a long‐lasting eastward electric field, as was previously suggested by C. Huang et al. [2005]. A simulation of the storm day agrees well with the observational data and shows that, compared with the ionosphere of the previous quiet day, the peak electron density in the F‐region (NmF2) increased by a factor of ≈2, the altitude of the peak density (hmF2) rose by ≈80 km, and the F‐region electron temperature decreased by ≈1000 K. Further simulations in which either the neutral atmosphere and winds or the electric field were replaced by their quiet day counterparts clearly suggest that the electric field played the dominant, although not exclusive, role in producing these effects.