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Solar activity in extended cycles
Li KJ(李可军)1,2,3; Yun, HS1,3; Liang HF(梁红飞)1,4; Gu XM(顾啸马)1,4; Li, KJ (reprint author), Natl Astron Observ, Beijing, Peoples R China.
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2002-07
Volume107Issue:A7
DOI10.1029/2001JA000072
Contribution Rank第1完成单位
Indexed BySCI
KeywordSolar Activity Cycle Sunspot Prediction Of Solar Activity
Abstract[1] It is well known that the first sunspot groups of a new cycle appear before sunspot minimum and continue to emerge for 12 or more years, ending after the following minimum. The period of time over which activity belonging to a specific cycle is observed is called the "extended activity cycle.'' A criterion for differentiating sunspot groups into their proper solar cycles during the overlapping, transitional period is proposed. The monthly sunspot group numbers during each extended activity cycle are constructed to show characteristics of solar activity for them. On the basis of the defining characteristics we estimate the conventional start of the beginning time of sunspot cycle 24 (the next cycle) to occur similar to2007.2 +/- 1 year, at the 68% percent level of confidence.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0148-0227
URL查看原文
Archive Date2002-10-09
WOS IDWOS:000178982500035
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSUNSPOT CYCLE ; MINIMUM
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6051
Collection太阳物理研究组
Corresponding AuthorLi, KJ (reprint author), Natl Astron Observ, Beijing, Peoples R China.
Affiliation1.Yunnan Observatory, Kunming, China
2.National Astronomical Observatories, Beijing, China.
3.Astronomy Program, SEES, Seoul National University, Seoul, Korea
4.United Laboratory of Optical Astronomy, CAS, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li KJ,Yun, HS,Liang HF,et al. Solar activity in extended cycles[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2002,107(A7).
APA Li KJ,Yun, HS,Liang HF,Gu XM,&Li, KJ .(2002).Solar activity in extended cycles.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,107(A7).
MLA Li KJ,et al."Solar activity in extended cycles".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 107.A7(2002).
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