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Investigation of Sunspot Area Varying with Sunspot Number
Li KJ(李可军)1,2,3; Li FY(李富羽)1,4; Zhang J(张娟)1,4; Feng, W5,6
Source PublicationSOLAR PHYSICS
2016-11
Volume291Issue:9-10Pages:2917-2930
DOI10.1007/s11207-016-1010-2
Contribution Rank第1完成单位
Indexed BySCI
KeywordSunspots, statistics Solar cycle, observations
Abstract

The statistical relationship between sunspot area (SA) and sunspot number (SN) is investigated through analysis of their daily observation records from May 1874 to April 2015. For a total of 1607 days, representing 3 % of the total interval considered, either SA or SN had a value of zero while the other parameter did not. These occurrences most likely reflect the report of short-lived spots by a single observatory and subsequent averaging of zero values over multiple stations. The main results obtained are as follows: i) The number of spotless days around the minimum of a solar cycle is statistically negatively correlated with the maximum strength of solar activity of that cycle. ii) The probability distribution of SA generally decreases monotonically with SA, but the distribution of SN generally increases first, then it decreases as a whole. The different probability distribution of SA and SN should strengthen their non-linear relation, and the correction factor [k] in the definition of SN may be one of the factors that cause the non-linearity. iii) The non-linear relation of SA and SN indeed exists statistically, and it is clearer during the maximum epoch of a solar cycle.

Funding Project973 program[2012CB957801] ; National Natural Science Foundation of China[11573065] ; National Natural Science Foundation of China[11633008] ; National Natural Science Foundation of China[11273057] ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences
Funding Organization973 program[2012CB957801] ; National Natural Science Foundation of China[11573065, 11633008, 11273057] ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 太阳与太阳系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherSPRINGER
Publication PlaceVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN0038-0938
URL查看原文
Archive Date2016-12-12
WOS IDWOS:000388842600021
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSOLAR-CYCLE ; UNIT AREA
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9840
Collection太阳物理研究组
Corresponding AuthorLi KJ(李可军)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China
2.State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing, China
3.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing, China
4.University of Chinese Academy of Sciences, Beijing, China
5.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming, China
6.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University) Ministry of Education, Nanjing, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li KJ,Li FY,Zhang J,et al. Investigation of Sunspot Area Varying with Sunspot Number[J]. SOLAR PHYSICS,2016,291(9-10):2917-2930.
APA Li KJ,Li FY,Zhang J,&Feng, W.(2016).Investigation of Sunspot Area Varying with Sunspot Number.SOLAR PHYSICS,291(9-10),2917-2930.
MLA Li KJ,et al."Investigation of Sunspot Area Varying with Sunspot Number".SOLAR PHYSICS 291.9-10(2016):2917-2930.
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