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The shape of the sunspot cycle described by sunspot areas
Li KJ(李可军); Li, KJ
Source PublicationASTRONOMY & ASTROPHYSICS
1999-05
Volume345Issue:3Pages:1006-1010
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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6361
URL查看原文
WOS IDWOS:000080528100034
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordMAUNDER MINIMUM ; SOLAR-CYCLE
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6029
Collection太阳物理研究组
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.
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