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题名:
LONG-TERM TREND OF SUNSPOT NUMBERS
作者: Gao PX(高朋鑫)1,2
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2016-10-20
卷号: 830, 期号:2
DOI: 10.3847/0004-637X/830/2/140
学科分类: 天文学
产权排序: 第1完成单位
收录类别: SCI
通讯作者: Gao, P. X.(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China)
关键词: methods: data analysis ; Sun: activity ; sunspots
英文摘要: Using the Hilbert-Huang Transform method, we investigate the long-term trend of yearly mean total sunspot numbers in the time interval of 1700-2015, which come from the World Data Center-the. sunspot Index and long-term solar observations. The main findings of this study are summarized below. (1) From the adaptive trend, which is extracted from the yearly mean total sunspot numbers, we can find that the value gradually increases during the time period 1700-1975, then decreases gradually from 1975 to 2015. (2) The Centennial Gleissberg Cycle is extracted from the yearly mean total sunspot numbers and confirms that. a new grand minimum is in progress; the Dalton Minimum, the Gleissberg Minimum, and low level of solar activity during solar cycle 24 (the part of the new grand minimum) all can be understood as minima of the Centennial Gleissberg Cycle. (3) Based on the adaptive (overall) trend, and the 100-year and longer timescale trend of yearly mean total sunspot numbers, we can infer that the level of solar activity during the new grand minimum may be close to that during the Gleissberg Minimum, slightly higher than that during the. Dalton Minimum, and significantly higher than that during the. Maunder Minimum. Our results do not support the suggestion. that a new grand minimum, somewhat resembling the Maunder Minimum, is in progress.
项目资助者: National Natural Science Foundation of China(11673061, 11633008) ; Applied Basic Research Foundation of Yunnan Province, China(2014FB190) ; Foundation of Key Laboratory of Solar Activity of National Astronomical Observatories of Chinese Academy of Sciences(KLSA201507) ; Chinese Academy of Sciences
语种: 英语
原文出处: 查看原文
ISSN号: 0004-637X
文章类型: Article
WOS标题词: Science & Technology ; Physical Sciences
研究领域[WOS]: Astronomy & Astrophysics
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: EMPIRICAL MODE DECOMPOSITION ; SOLAR-ACTIVITY RECONSTRUCTION ; MAGNETIC-FIELDS ; HILBERT SPECTRUM ; CYCLE 25 ; PERIODICITIES ; PREDICTION ; AMPLITUDE ; POLARITY ; MINIMUM
WOS记录号: WOS:000400471800007
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ynao.ac.cn/handle/114a53/10174
Appears in Collections:太阳物理研究组_期刊论文

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作者单位: 1.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China

Recommended Citation:
Gao PX. LONG-TERM TREND OF SUNSPOT NUMBERS[J]. ASTROPHYSICAL JOURNAL,2016,830(2).
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