Development of a middle and low latitude theoretical ionospheric model and an observation system data assimilation experiment

Development of a middle and low latitude theoretical ionospheric model and an observation system data assimilation experiment
复制标题

中低纬度电离层理论模型建立及观测系统资料同化实验

DOI:
10.1007/s11434-007-0462-z
复制
发表时间:
2008
期刊:
科学通报(英文版)
影响因子:
--
通讯作者:
L. Liu
L. Liu
中科院分区:
其他
文献类型:
--
作者:
W. Wan;T. Yu;X. Yue;H. Le;Y. Chen;L. Liu

文献摘要

参考文献

被引文献

相似文献

本文在前人工作的基础上,建立了中国科学院地质与地球物理研究所中低纬电离层理论模型--地球电离层理论模型(TIME-IGGCAS)。TIME-IGGCAS自洽地求解电子和离子的质量连续性、运动和能量方程,并使用偏心偶极场近似地球磁场。我们在模型中联合收割机了欧拉和拉格朗日方法,并考虑了等离子体E×B漂移速度。计算结果表明,该模式稳定可靠,能较好地再现电离层的大尺度特征。利用TIME-IGGCAS进行了观测系统资料同化试验。同化结果表明,利用非线性最小二乘拟合方法,将观测到的foF 2和hmF 2代入模式,可以较准确地估计E×B漂移速度。研究结果对电离层资料同化模式的发展具有重要意义,有助于更好地进行电离层临近预报。
On the basis of previous work, we develop a middle and low latitude theoretical ionospheric model in this paper, named Theoretical Ionospheric Model of the Earth in the Institute of Geology and Geophysics, Chinese Academy of Sciences (TIME-IGGCAS). TIME-IGGCAS solves the equations of mass continuity, motion and energy of electron and ions self-consistently and uses an eccentric dipole field approximation to the Earth’s magnetic field. We combine the Eulerian and Lagrangian approaches in the model and take account of the plasma E×B drift velocity. Calculation results reveal that the model is steady and credible and can reproduce most large-scale features of ionosphere. By using TIME-IGGCAS, we carried out an observation system data assimilation experiment. Assimilation results show that the E×B drift velocity can be accurately estimated by ingesting the observed foF2 and hmF2 into the model applying nonlinear least-square fit method. We suggest that this work is of great significance in the development of ionospheric data assimilation model to give better nowcast and forecast of ionosphere.
DOI: 10.1029/2000ja000403
发表时间: 2001-07
影响因子: --
作者:
Shunrong Zhang;W. Oliver;S. Fukao;S. Kawamura
通讯作者: Shunrong Zhang;W. Oliver;S. Fukao;S. Kawamura
DOI: 10.3319/tao.2000.11.2.543(a
发表时间: 2000-06
影响因子: 0.8
作者:
Libo Liu;W. Wan;J. Tu;Zhenan Bao
通讯作者: Libo Liu;W. Wan;J. Tu;Zhenan Bao
DOI: 10.1029/2002rs002854
发表时间: 2004-02
期刊: Radio Science
影响因子: 1.6
作者:
Chunming Wang;G. Hajj;X. Pi;I. Rosen;B. Wilson
通讯作者: Chunming Wang;G. Hajj;X. Pi;I. Rosen;B. Wilson
DOI: 10.1016/0273-1177(95)00108-q
发表时间: 1995
影响因子: 2.6
作者:
Shunrong Zhang;H. Xiaodong
通讯作者: Shunrong Zhang;H. Xiaodong
DOI: 10.1088/0253-6102/41/5/795
发表时间: 2004-05
影响因子: 3.1
作者:
Zhang Man-Lian;Radicella Sandro M.;Shang Sheping
通讯作者: Zhang Man-Lian;Radicella Sandro M.;Shang Sheping