NAOC Open IR
Real-time rapid prediction of variations of Earth's rotational rate
Wang QiJie1; Liao DeChun1; Zhou YongHong1
2008
Source PublicationCHINESE SCIENCE BULLETIN
ISSN1001-6538
Volume53Issue:7Pages:969
AbstractReal-time rapid prediction of variations of the Earth's rotational rate is of great scientific and practical importance. However, due to the complicated time-variable characteristics of variations of the Earth's rotational rate (i.e., length of day, LOD), it is usually difficult to obtain satisfactory predictions by conventional linear time series analysis methods. This study employs the nonlinear artificial neural networks (ANN) to predict the LOD variations. The topology of the ANN model is determined by minimizing the root mean square errors (RMSE) of the predictions. Considering the close relationships between the LOD variations and the atmospheric circulation movement, the operational prediction series of axial atmospheric angular momentum (AAM) is incorporated into the ANN model as an additional input in the real-time rapid prediction of LOD variations with 1-5 days ahead. The results show that the LOD prediction is significantly improved after introducing the operational prediction series of AAM into the ANN model.
KeywordPARAMETERS LENGTH real-time prediction variation of Earth's rotational rate atmospheric angular momentum artificial neural networks
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/56793
Collection中国科学院国家天文台
Affiliation1.中国科学院国家天文台
2.中国科学院大学
3.Cent S University, Sch Info Phys & Geomat Engn, Changsha 410083, Peoples R China
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang QiJie,Liao DeChun,Zhou YongHong. Real-time rapid prediction of variations of Earth's rotational rate[J]. CHINESE SCIENCE BULLETIN,2008,53(7):969.
APA Wang QiJie,Liao DeChun,&Zhou YongHong.(2008).Real-time rapid prediction of variations of Earth's rotational rate.CHINESE SCIENCE BULLETIN,53(7),969.
MLA Wang QiJie,et al."Real-time rapid prediction of variations of Earth's rotational rate".CHINESE SCIENCE BULLETIN 53.7(2008):969.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang QiJie]'s Articles
[Liao DeChun]'s Articles
[Zhou YongHong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang QiJie]'s Articles
[Liao DeChun]'s Articles
[Zhou YongHong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang QiJie]'s Articles
[Liao DeChun]'s Articles
[Zhou YongHong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.