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基于COSMIC掩星精密定轨数据的等离子体层电子含量研究

傅维正 马冠一 万庆涛 李婧华 王晓岚 卢伟俊

傅维正, 马冠一, 万庆涛, 李婧华, 王晓岚, 卢伟俊. 基于COSMIC掩星精密定轨数据的等离子体层电子含量研究[J]. 空间科学学报, 2021, 41(4): 555-561. doi: 10.11728/cjss2021.04.555
引用本文: 傅维正, 马冠一, 万庆涛, 李婧华, 王晓岚, 卢伟俊. 基于COSMIC掩星精密定轨数据的等离子体层电子含量研究[J]. 空间科学学报, 2021, 41(4): 555-561. doi: 10.11728/cjss2021.04.555
FU Weizheng, MA Guanyi, WAN Qingtao, LI Jinghua, WANG Xiaolan, LU Weijun. Study of Plasmaspheric Electron Content Based on Precise Orbit Determination Data of COSMIC Radio Occultation[J]. Chinese Journal of Space Science, 2021, 41(4): 555-561. doi: 10.11728/cjss2021.04.555
Citation: FU Weizheng, MA Guanyi, WAN Qingtao, LI Jinghua, WANG Xiaolan, LU Weijun. Study of Plasmaspheric Electron Content Based on Precise Orbit Determination Data of COSMIC Radio Occultation[J]. Chinese Journal of Space Science, 2021, 41(4): 555-561. doi: 10.11728/cjss2021.04.555

基于COSMIC掩星精密定轨数据的等离子体层电子含量研究

doi: 10.11728/cjss2021.04.555
基金项目: 

国家重点研发计划项目(2016YFB0501900)和国家自然科学基金项目(11873064)共同资助

详细信息
    作者简介:

    傅维正,E-mail:fuweizheng17@mails.ucas.ac.cn

  • 中图分类号: P353

Study of Plasmaspheric Electron Content Based on Precise Orbit Determination Data of COSMIC Radio Occultation

  • 摘要: 等离子体层是日地环境重要的组成部分.本文利用COSMIC掩星精密定轨数据经处理后得到的podTec文件获取等离子体层电子含量(PEC)对等离子体层进行研究.将podTec数据进行处理后获得的PEC(pod-PEC)和IRI-Plas经验模型提供的PEC (IRI-PEC)进行对比,发现pod-PEC与IRI-PEC符合得较好.在低(0°—20°)、中(20°—50°)、高(50°—90°)修正地磁纬度带下,分析了COSMIC在太阳活动极大年(2014年)3,6,9和12月的pod-PEC,得到如下结论:PEC随着纬度升高而逐渐减少,且3,9月PEC在中低纬关于磁赤道的南北对称性较好,6月北半球各纬度带的PEC明显高于南半球同一纬度带的值,而12月情况则完全相反,南半球中纬的PEC甚至会等于北半球低纬的PEC值;PEC在白天高而晚上低,高纬地区的PEC昼夜变化不明显;PEC具有明显的季节性.对于北半球,一年中PEC最大值出现在春季,冬秋季次之,夏季最低,具有明显的年度异常现象.

     

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出版历程
  • 收稿日期:  2020-01-10
  • 修回日期:  2020-10-16
  • 刊出日期:  2021-07-15

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