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TIEGCM集合卡尔曼滤波同化模型设计及初步试验

张亚楠 吴小成 胡雄

张亚楠, 吴小成, 胡雄. TIEGCM集合卡尔曼滤波同化模型设计及初步试验[J]. 空间科学学报, 2017, 37(2): 168-176. doi: 10.11728/cjss2017.02.168
引用本文: 张亚楠, 吴小成, 胡雄. TIEGCM集合卡尔曼滤波同化模型设计及初步试验[J]. 空间科学学报, 2017, 37(2): 168-176. doi: 10.11728/cjss2017.02.168
ZHANG Yanan, WU Xiaocheng, HU Xiong. TIEGCM Ensemble Kalman Filter Assimilation Model Design and Preliminary Results[J]. Journal of Space Science, 2017, 37(2): 168-176. doi: 10.11728/cjss2017.02.168
Citation: ZHANG Yanan, WU Xiaocheng, HU Xiong. TIEGCM Ensemble Kalman Filter Assimilation Model Design and Preliminary Results[J]. Journal of Space Science, 2017, 37(2): 168-176. doi: 10.11728/cjss2017.02.168

TIEGCM集合卡尔曼滤波同化模型设计及初步试验

doi: 10.11728/cjss2017.02.168
基金项目: 

国家自然科学基金项目资助(41204137)

详细信息
    作者简介:

    张亚楠,E-mail:zhangyanan113@mails.ucas.ac.cn

  • 中图分类号: P352

TIEGCM Ensemble Kalman Filter Assimilation Model Design and Preliminary Results

  • 摘要: 选择参数化的电离层热层理论模型TIEGCM作为背景模型,基于COSMIC掩星观测的电子密度廓线数据,应用集合卡尔曼滤波方法建立全球电离层电子密度同化模型,实现了全球电离层的电子密度同化.同化结果表明,该同化模型能将观测资料有效同化到背景模式中,获得全球三维电离层电子密度.与背景模式相比,同化得到的电子密度相对于观测值的偏差显著下降.对于有同化和无同化参与的试验,NmF2的标准偏差分别降低约60%和20%.此外,分组同化与同时同化的结果对比显示,平均偏差改善基本一致,同时同化后的标准偏差在峰值高度以上略有减小.

     

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出版历程
  • 收稿日期:  2016-01-25
  • 修回日期:  2016-03-11
  • 刊出日期:  2017-03-15

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