全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

中国区域电离层TEC与月均值偏差的空间相关性研究

DOI: 10.6038/cjg20141113, PP. 3600-3610

Keywords: 电离层,TEC,背景场,空间变化,特征尺度

Full-Text   Cite this paper   Add to My Lib

Abstract:

本文利用美国喷气动力实验室(JPL)提供的电离层总电子含量(TEC)的地图网格产品,计算了中国区域上空电离层TEC与月均值偏差及其空间相关系数矩阵,从而分析了TEC与月均值偏差空间相关性的分布特征,根据统计学中定义的相关距离提取了这种偏差在经、纬度方向上的空间特征尺度.并以2008年和2011年为例,着重考察了TEC月偏差的空间特征尺度与太阳活动水平、地磁条件和季节变化之间的关系.结果发现,TEC与月均值偏差的空间相关性呈现椭圆形高斯分布的特征,沿纬线方向的特征尺度大于沿经线方向,不同纬度区域偏差的空间相关性特征差异明显,高纬的特征尺度在两个方向上均小于低纬,而不同经度区域在相同地方时条件下表现差异不大;两个方向的特征尺度在白天、太阳活动水平高和地磁活动剧烈时均存在增大的现象.

References

[1]  Cander L R. 2006. Spatial correlation of foF2 and TEC under quiet and disturbed ionospheric conditions. Geophysical Research Abstracts, 8, 01103.
[2]  Guo P. 2006. GPS radio occultation technique and CHAMP occultation data retrieval (in Chinese). Shanghai: Shanghai Astronomical Observatory, Chinese Academy of Sciences.
[3]  Liu X C, Shen J, Li Y G. 2010. A generalized auto-regressive conditional heteroskedasticity model for system marginal price forecasting based on weighted double gaussian distribution. Power System Technology (in Chinese), 34(1): 139-144.
[4]  Schunk R W, Scherliess L, Sojka J J, et al. 2004. Global assimilation of ionospheric measurements (GAIM). Radio Sci., 39(1): RS1S02, doi: 10.1029/2002RS002794.
[5]  Wang Y, Lin Z X, Yu T. 2011. An OI-based assimilation method of vertical ionospheric electron density profile over Xiamen. Chin. J. Space Sci. (in Chinese), 31(6): 771-777.
[6]  Wu X C. 2008. Radio occultation technique for ionosphere detection (in Chinese)[Ph. D. thesis]. Beijing: National Space Science Center, Chinese Academy of Sciences.
[7]  Xiong N L, Tang C C, Li X J. 1999. Introduction to Ionospheric Physics (in Chinese). Wuhan: Wuhan University Press.
[8]  Xu J S, Zou Y H, Ma S Y. Time-dependent 3-D computerized ionospheric tomography with ground-based GPS network and occultation observations. Chinese J. Geophys. (in Chinese), 48(4): 759-767.
[9]  Yue X A. 2008. Modeling and data assimilation of mid-and low-latitude ionosphere (in Chinese)[Ph. D. thesis]. Beijing: Chinese Academy of Sciences.
[10]  Zhang Q W, Guo J S, Zhang G L, et al. 1995. Mid-and low-latitude ionospheric responses to different type of magnetic storm. Chinese J. Geophys. (Acta Geophysica Sinica) (in Chinese), 38(5): 581-589.
[11]  Angling M J, Cannon P S. 2004. Assimilation of radio occultation measurements into background ionospheric models. Radio Sci., 39(1), doi: 10.1029/2002RS002819.
[12]  Bust G S, Garner T W, Gaussiran II T L. 2004. Ionospheric Data Assimilation Three-Dimensional (IDA3D): A global, multisensor, electron density specification algorithm. Journal of Geophysical Research, 109(A11): A11312, doi: 10.1029/2003JA010234.
[13]  Derber J, Rosati A. 1989. A global oceanic data assimilation system. J. Phys. Ocean., 19(9): 1337-1347.
[14]  Gail W B, Prag A B, Coco D S, et al. 1993. A statistical characterization of local mid-latitude total electron content. Journal of Geophysical Research, 98(A9): 15717-15727.
[15]  He M S. 2011. A number of studies of ionospheric structural on the base of COSMIC occultation observations (in Chinese)[Ph. D. thesis]. Beijing: Institute of Geology and Geophysics: Chinese Academy of Sciences.
[16]  Howe B M, Runciman K, Secan J A. 1998. Tomography of the ionosphere: Four-dimensional simulations. Radio Sci., 33(1): 109-128.
[17]  Yu T, Wang Y G, Mao T, et al. 2011. Ionospheric Data Assimilation and Inversion Experiment with Using the Single Ionosonde and GPS Data (in Chinese). Xiamen: Chinese Meteorological Society 28th Annual Meeting.
[18]  Yu X, Wan W X, Liu L B, et al. 2007. A study of correlation distance of the day to day variability of F2 layer peak electron density over Europe. Chinese J. Geophys. (in Chinese), 50(5): 1283-1288.
[19]  Yuan Y B. 2002. Study on theories and methods of correcting ionospheric delay and monitoring ionosphere based on GPS (in Chinese)[Ph. D. thesis]. Wuhan: Institude of Geodesy and Geophysics: Chinese Academy of Sciences.
[20]  Zhuang Z R. 2004. Study of the statistical structure of background errors and its impact on 3D-Var (in Chinese)[Ph. D. thesis]. Beijing: Chinese Academy of Meteorological Sciences.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133