YNAO OpenIR  > 太阳物理研究组
The shape of the sunspot cycle described by sunspot areas
Li KJ(李可军); Li, KJ
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun : Sunspots Sun : Activity
AbstractThe temporal behavior of the sunspot cycles 12-22, as described by quarterly mean values of sunspot areas, can be represented by a single function containing only two parameters: the starting time and the amplitude of a cycle. The parameters are determined for the more recent 11 sunspot cycles and examined for any predictable behavior. As a sunspot cycle progresses, the amplitude parameter can be better determined to within 10% at 4.3 years into its cycle, and the starting time can be well determined to within +/-0.3 year at 4.6 years into the cycle, thereby providing a good prediction both for the timing and size of sunspot maximum and for the behavior of the remaining 5-10 years of the cycle. Characteristics of the sunspot cycle shape are investigated in this paper. The shape of the sunspot area cycle is generally asymmetric, taking less time rising from minimum. to maximum than reaching the next minimum from the maximum, and cycles with larger amplitude are more asymmetric and take less time to reach maximum, the same as the so-called Waldmeier effect of the cycles described by the sunspot relative numbers.
Subject AreaAstronomy & Astrophysics
WOS IDWOS:000080528100034
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
Citation statistics
Document Type期刊论文
Corresponding AuthorLi, KJ
AffiliationYunnan Observatory, The Chinese Academy of Sciences, P.R. China
Recommended Citation
GB/T 7714
Li KJ,Li, KJ. The shape of the sunspot cycle described by sunspot areas[J]. ASTRONOMY & ASTROPHYSICS,1999,345(3):1006-1010.
APA Li KJ,&Li, KJ.(1999).The shape of the sunspot cycle described by sunspot areas.ASTRONOMY & ASTROPHYSICS,345(3),1006-1010.
MLA Li KJ,et al."The shape of the sunspot cycle described by sunspot areas".ASTRONOMY & ASTROPHYSICS 345.3(1999):1006-1010.
Files in This Item:
File Name/Size DocType Version Access License
The shape of the sun(111KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li KJ(李可军)]'s Articles
[Li, KJ]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li KJ(李可军)]'s Articles
[Li, KJ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li KJ(李可军)]'s Articles
[Li, KJ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: The shape of the sunspot cycle described by sunspot areas.pdf
Format: Adobe PDF
All comments (0)
No comment.

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