Phase Relations between the Sunspot Numbers and Total Solar Irradiance

doi:10.3847/1538-4357/aa9bda

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	Phase Relations between the Sunspot Numbers and Total Solar Irradiance
	Xu, J. C.2,3,4,5; Xie, J. L.2,4,5; Qu, Z. N.1
刊名	ASTROPHYSICAL JOURNAL
	2017-12-20
卷号	851 期号:2 页码:9
关键词	Sun: activity Sun: general sunspots
ISSN号	0004-637X
DOI	10.3847/1538-4357/aa9bda
英文摘要	Understanding the effect of sunspot activities on the variations in the total solar irradiance (TSI) is essential for the interpretation of the variability of TSI as well as its reconstruction. Phase relations between the sunspot numbers (SN) and two TSI composite data are investigated. It is found that TSI and SN are positively correlated, and the former lags the latter by about 29 days, which is approximately a solar rotation period; analyses of the data sets in the four individual cycles show that in cycles 21, 23, and 24, TSI lags SN by 28.9-30.3 days, while in cycle 22, the lag is only 21.8-22.3 days. The abnormality in cycle 22 is probably caused by its stronger magnetic field in sunspots compared with its adjacent cycles. The nonlinearity between TSI and SN is confirmed and explained with the different behavior and effect of spots, faculae, and magnetic network. Based on the cross-wavelet transform and wavelet coherence analysis, a common periodicity between TSI and SN at the timescale of the solar cycle is clearly revealed; at timescales longer than about four years, high values of coherence above the 95% confidence level together with a strong phase synchronization feature are exhibited. At timescales shorter than three rotational periods, the relation between TSI and SN indicates low correlations and a noisy behavior with strong phase mixing due to the lifetime of spots and faculae; moreover, if the short-term effect of spots and faculae is smoothed out, then their coherence reaches high values in partial areas at periods from three rotations to about four years.
资助项目	National Natural Science Foundation of China[11573065] ; National Natural Science Foundation of China[11633008] ; National Natural Science Foundation of China[11703085] ; Specialized Research Fund for State Key Laboratories ; Sichuan University of Science and Engineering[2015RC43]
WOS关键词	BOOTSTRAP METHODS ; WAVELET TRANSFORM ; MAGNETIC-FIELDS ; CLIMATE-CHANGE ; TIME-SERIES ; INDEX ; RECONSTRUCTION ; VARIABILITY ; RECORDS ; CYCLES
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000418661900003
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Sichuan University of Science and Engineering ; Sichuan University of Science and Engineering ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Sichuan University of Science and Engineering ; Sichuan University of Science and Engineering ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Sichuan University of Science and Engineering ; Sichuan University of Science and Engineering ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; Sichuan University of Science and Engineering ; Sichuan University of Science and Engineering
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/37362]
专题	中国科学院国家天文台
通讯作者	Xu, J. C.
作者单位	1.Sichuan Univ Sci & Engn, Sch Sci, Dept Phys, Zigong 643000, Peoples R China 2.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, State Key Lab Space Weather, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Xu, J. C.,Xie, J. L.,Qu, Z. N.. Phase Relations between the Sunspot Numbers and Total Solar Irradiance[J]. ASTROPHYSICAL JOURNAL,2017,851(2):9.
APA	Xu, J. C.,Xie, J. L.,&Qu, Z. N..(2017).Phase Relations between the Sunspot Numbers and Total Solar Irradiance.ASTROPHYSICAL JOURNAL,851(2),9.
MLA	Xu, J. C.,et al."Phase Relations between the Sunspot Numbers and Total Solar Irradiance".ASTROPHYSICAL JOURNAL 851.2(2017):9.