Revisiting the Question: The Cause of the Solar Cycle Variation of Total Solar Irradiance | |
Xiang NB(向南彬)1,2 | |
刊名 | ADVANCES IN ASTRONOMY |
2019 | |
页码 | 9 |
ISSN号 | 1687-7969 |
DOI | 10.1155/2019/3641204 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | The Mg II index and sunspot area are usually used to represent the intensification contribution by solar bright structures to total solar irradiance (TSI) and sunspot darkening, respectively. In order to understand the cause of the solar cycle variation of TSI, we use extension of wavelet transform, wavelet coherence (WTC), and partial wavelet coherence (PWC), to revisit this issue. The WTC of TSI with sunspot area shows that the two time series are very coherent on timescales of one solar cycle, but the PWC of TSI with sunspot area, which can find the results of WTC after eliminating the effect of the Mg II index, indicates that the solar cycle variation of TSI is not related to sunspots on the solar surface. The coherence of two time series at these timescales should be due to a particular phase relation between sunspots and TSI. The WTC and PWC of TSI with Mg II index show that the solar cycle variation of TSI is highly related to Mg II index, which reflects the relation of TSI with the long-term part of Mg II index that shows the intensification contribution by the small magnetic features to TSI. Consequently, the solar cycle variation of TSI is dominated by the small magnetic features on the solar full disk. Additionally, we also show the combined effects of the sunspot darkening and the intensification contribution represented by Mg II index to TSI on timescales of a few days to several months and indicate that the faculae increase TSI and contribute to its variation at these timescales. |
学科主题 | 天文学 ; 太阳与太阳系 |
URL标识 | 查看原文 |
出版地 | ADAM HOUSE, 3RD FLR, 1 FITZROY SQ, LONDON, W1T 5HF, ENGLAND |
资助项目 | National Natural Science Foundation of China[11573065] ; National Natural Science Foundation of China[11633008] ; National Natural Science Foundation of China[11603069] ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | HINDAWI LTD |
WOS记录号 | WOS:000464833500001 |
资助机构 | National Natural Science Foundation of China[11573065, 11633008, 11603069] ; Specialized Research Fund for State Key Laboratories ; Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/20086] |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Xiang NB(向南彬) |
作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 2.State Key Laboratory of Space Weather, Chinese Academy of Sciences, Beijing 100190, China |
推荐引用方式 GB/T 7714 | Xiang NB. Revisiting the Question: The Cause of the Solar Cycle Variation of Total Solar Irradiance[J]. ADVANCES IN ASTRONOMY,2019:9. |
APA | Xiang NB.(2019).Revisiting the Question: The Cause of the Solar Cycle Variation of Total Solar Irradiance.ADVANCES IN ASTRONOMY,9. |
MLA | Xiang NB."Revisiting the Question: The Cause of the Solar Cycle Variation of Total Solar Irradiance".ADVANCES IN ASTRONOMY (2019):9. |
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