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Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited
Li KJ(李可军)1,2; Feng, W3; Shi XJ(石祥军)1,4; Xie JL(谢婧岚)1,4; Gao PX(高朋鑫)1; Liang, HF5
Source PublicationSOLAR PHYSICS
2014-03
Volume289Issue:3Pages:759-768
DOI10.1007/s11207-013-0369-6
Contribution Rank第1完成单位
Indexed BySCI
KeywordRotation Solar Cycle Sunspots Observations Velocity
Abstract

Long-term variations of solar differential rotation and sunspot activity are investigated through re-analyzing the data on parameters of the differential-rotation law obtained by Makarov, Tlatov, and Callebaut (Solar Phys. 170, 373, 1997), Javaraiah, Bertello, and Ulrich (Astrophys. J. 626, 579, 2005a; Solar Phys. 232, 25, 2005b), and Javaraiah et al. (Solar Phys. 257, 61, 2009). Our results indicate that the solar-surface-rotation rate at the Equator (indicated by the A-parameter of the standard solar-rotation law) shows a secular decrease since Cycle 12 onwards, given by about 1 - 1.5 x 10(-3) (deg day(-1) year(-1)). The B-parameter of the standard differential-rotation law seems to also show a secular decrease since Cycle 12 onwards, but of weak statistical significance. The rotation rate averaged over latitudes 0 degrees-40 degrees does not show a secular trend of statistical significance. Moreover, the average sunspot area shows a secular increase of statistical significance since Cycle 12 onwards, while a negative correlation is found between the level of sunspot activity (indicated by the average sunspot area) and the solar equatorial rotation on long-term scales.

Funding Project973 programs[2012CB957801] ; 973 programs[2011CB811406] ; National Natural Science Foundation of China[11273057] ; National Natural Science Foundation of China[11221063] ; National Natural Science Foundation of China[11147125] ; National Natural Science Foundation of China[11073010] ; Chinese Academy of Sciences
Funding Organization973 programs[2012CB957801, 2011CB811406] ; National Natural Science Foundation of China[11273057, 11221063, 11147125, 11073010] ; Chinese Academy of Sciences
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
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 Date2014-01-07
WOS IDWOS:000328199700006
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordNORTH-SOUTH ASYMMETRY ; BRIGHTNESS-TEMPERATURE REGIONS ; TORSIONAL OSCILLATIONS ; TEMPORAL VARIATIONS ; MERIDIONAL MOTIONS ; MAGNETIC FEATURES ; CONVECTION ZONE ; ACTIVITY CYCLE ; MOUNT WILSON ; VELOCITY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6257
Collection太阳物理研究组
Corresponding AuthorLi KJ(李可军)
Affiliation1.National Astronomical Observatories/Yunnan Observatory, CAS, Kunming, 650011, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing, 100012, China
3.Research Center of Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, China
4.Graduate School, CAS, Beijing, 100863, China
5.Department of Physics, Yunnan Normal University, Kunming, 650093, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li KJ,Feng, W,Shi XJ,et al. Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited[J]. SOLAR PHYSICS,2014,289(3):759-768.
APA Li KJ,Feng, W,Shi XJ,Xie JL,Gao PX,&Liang, HF.(2014).Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited.SOLAR PHYSICS,289(3),759-768.
MLA Li KJ,et al."Long-Term Variations of Solar Differential Rotation and Sunspot Activity: Revisited".SOLAR PHYSICS 289.3(2014):759-768.
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