WHY IS THE SOLAR CONSTANT NOT A CONSTANT?

被引：41
|
作者：
Li, K. J. [1 ,2 ]
Feng, W. [3 ]
Xu, J. C. [1 ,4 ]
Gao, P. X. [1 ]
Yang, L. H. [1 ,4 ]
Liang, H. F. [5 ]
Zhan, L. S. [6 ]
机构：
[1] CAS, Yunnan Observ, Natl Astron Observ, Kunming 650011, Peoples R China
[2] CAS, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
[3] Kunming Univ Sci & Technol, Res Ctr Anal & Measurement, Kunming 650093, Peoples R China
[4] CAS, Grad Sch, Beijing 100863, Peoples R China
[5] Yunnan Normal Univ, Dept Phys, Kunming 650093, Peoples R China
[6] Jingdezhen Ceram Inst, Jingdezhen 333001, Jiangxi, Peoples R China
来源：
ASTROPHYSICAL JOURNAL | 2012年 / 747卷 / 02期
关键词：
Sun: activity; Sun: general; sunspots; IRRADIANCE; CYCLE; PERIODICITIES; LUMINOSITY; EVOLUTION;
D O I：
10.1088/0004-637X/747/2/135
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In order to probe the mechanism of variations of the solar constant on the inter-solar-cycle scale, the total solar irradiance (TSI; the so-called solar constant) in the time interval of 1978 November 7 to 2010 September 20 is decomposed into three components through empirical mode decomposition and time-frequency analyses. The first component is the rotation signal, counting up to 42.31% of the total variation of TSI, which is understood to be mainly caused by large magnetic structures, including sunspot groups. The second is an annual-variation signal, counting up to 15.17% of the total variation, the origin of which is not known at this point in time. Finally, the third is the inter-solar-cycle signal, counting up to 42.52%, which is inferred to be caused by the network magnetic elements in quiet regions, whose magnetic flux ranges from (4.27-38.01) x 10(19) Mx.
引用
收藏
页数：5
相关论文
共 50 条
12345