Chinese sunspot drawings and their digitization - (II) accuracy analysis for digitized sunspot hand-drawing records of Yunnan Observatories
文献类型:期刊论文
作者 | Peng, Yang2; Luo, Xiao-Yu2; Zeng, Shu-Guang2; Deng, Lin-Hua1,3; Zheng, Sheng2; Lin, Gang-Hua4; Cheng, Yu-Lin2; Tao, Jin-Ping3; Feng, Yong-Li3 |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
出版日期 | 2020-04-01 |
卷号 | 20期号:4页码:7 |
ISSN号 | 1674-4527 |
关键词 | sunspots methods data analysis techniques image processing |
DOI | 10.1088/1674-4527/20/4/61 |
英文摘要 | Sunspots are the most striking and easily observed magnetic structures of the Sun, and statistical analysis of solar historical data could reveal a wealth of information on the long-term variation of solar activity cycle. The hand-drawn sunspot records of Yunnan Observatories, Chinese Academy of Sciences have been accumulating for more than 60 years, and nearly 16 000 images have been preserved. In the future, the observation mode of recording sunspots by hand-drawing will be replaced inevitably by digital images observed either at ground or in space. To connect the hand-drawn sunspot data and the purely digital sunspot data in future, it is necessary to analyze the systematic errors of the data which are observed by the two observation modes in the period of transition. In this paper, we choose 268 round sunspots (H-type in modified Zurich sunspot classification) from the drawing of Yunnan Observatories to compare their positions and areas with the CCD observations made by Helioseismic and Magnetic Imager (HMI) on board Solar Dynamic Observatory (SDO) and Global Oscillation Network Group (GONG). We find that the latitude and longitude accuracy of hand-drawn sunspot are within -0.127 and 2.29 degree respectively, and the area accuracy is about 16.36 sunspot unit (mu Hem). Systematic errors apparently decrease with large sunspot. |
资助项目 | National Natural Science Foundation of China[U1731124] ; National Natural Science Foundation of China[U1531247] ; National Natural Science Foundation of China[11427901] ; National Natural Science Foundation of China[11873089] ; special foundation work of the Ministry of Science and Technology of China[2014FY120300] ; 13th Five-year Informatization Plan of Chinese Academy of Sciences[XXH13505-04] ; Youth Innovation Promotion Association CAS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
WOS记录号 | WOS:000529933300001 |
资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; special foundation work of the Ministry of Science and Technology of China ; special foundation work of the Ministry of Science and Technology of China ; 13th Five-year Informatization Plan of Chinese Academy of Sciences ; 13th Five-year Informatization Plan of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; special foundation work of the Ministry of Science and Technology of China ; special foundation work of the Ministry of Science and Technology of China ; 13th Five-year Informatization Plan of Chinese Academy of Sciences ; 13th Five-year Informatization Plan of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; special foundation work of the Ministry of Science and Technology of China ; special foundation work of the Ministry of Science and Technology of China ; 13th Five-year Informatization Plan of Chinese Academy of Sciences ; 13th Five-year Informatization Plan of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; special foundation work of the Ministry of Science and Technology of China ; special foundation work of the Ministry of Science and Technology of China ; 13th Five-year Informatization Plan of Chinese Academy of Sciences ; 13th Five-year Informatization Plan of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Youth Innovation Promotion Association CAS |
源URL | [http://ir.bao.ac.cn/handle/114a11/55221] |
专题 | 中国科学院国家天文台 |
通讯作者 | Zeng, Shu-Guang |
作者单位 | 1.Chongqing Univ Arts & Sci, Chongqing 402160, Peoples R China 2.China Three Gorges Univ, Coll Sci, Yichang 443002, Peoples R China 3.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China |
推荐引用方式 GB/T 7714 | Peng, Yang,Luo, Xiao-Yu,Zeng, Shu-Guang,et al. Chinese sunspot drawings and their digitization - (II) accuracy analysis for digitized sunspot hand-drawing records of Yunnan Observatories[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(4):7. |
APA | Peng, Yang.,Luo, Xiao-Yu.,Zeng, Shu-Guang.,Deng, Lin-Hua.,Zheng, Sheng.,...&Feng, Yong-Li.(2020).Chinese sunspot drawings and their digitization - (II) accuracy analysis for digitized sunspot hand-drawing records of Yunnan Observatories.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(4),7. |
MLA | Peng, Yang,et al."Chinese sunspot drawings and their digitization - (II) accuracy analysis for digitized sunspot hand-drawing records of Yunnan Observatories".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.4(2020):7. |
入库方式: OAI收割
来源:国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。