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Astronomical seeing with DIMM and wind-speed distributions with ERA5 data at the Muztagh-Ata site on the Pamir Plateau

文献类型：期刊论文

作者Zhang, Jicheng1,6; Zhao, Yong5; Esamdin, Ali2,3; Niu, Hubiao2; Gao, Jian1,6; Zibibula, Reziwagu4; Bai, Chunhai2; Zhang, Xuan2; Feng, Guojie2; Lin, Lin1,6
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2025-05-01
卷号539期号:3页码:2077-2087
关键词methods: statistical site testing
ISSN号0035-8711
DOI10.1093/mnras/staf642
产权排序4
英文摘要The Muztagh-Ata site, situated in the eastern Pamir Plateau of south-western Xinjiang, China, has been identified as a promising high-altitude location for astronomical observations, with systematic monitoring of atmospheric and observational parameters conducted since 2017. This study analyses 6 yr (2017-2022) of Differential Image Motion Monitor data, revealing exceptional stability in the site's seeing conditions, with a median value of 0.89 arcsec and a mean value of 0.96 arcsec, following a lognormal distribution. Most seeing values fall between the 25th and 75th percentiles (0.72-1.12 arcsec), indicating minimal anomalies and confirming the site's potential for high-resolution optical astronomy. Seasonal and monthly variations demonstrate notable stability, with months that have larger sample sizes, such as November, showing more stable conditions, while months with smaller sample sizes exhibit greater variability. Additionally, wind speed characteristics were analysed using 24 yr (2000-2023) data of ERA5, the fifth edition of the European Centre for Medium-Range Weather Forecasts. The wind speed distribution reveals an inverse relationship with atmospheric pressure, with stronger winds observed at higher altitudes and during winter months. Wavelet and autocorrelation analyses of upper level wind data (V-200) indicate periodicities at 0.5-, and 1-yr intervals, corresponding to seasonal and climatic cycles. A moderate positive correlation between seeing and V-200 suggests that high-altitude atmospheric dynamics influence turbulence, though ground-layer effects and seasonal variations also contribute. This study offers essential insights for enhancing the observational capabilities of the existing telescopes at the Muztagh-Ata site and for advancing future research in adaptive optics.
WOS关键词OPTICAL TURBULENCE ; VERTICAL-DISTRIBUTION ; IMAGE QUALITY ; TELESCOPE ; SKY ; RESOLUTION ; CAMPAIGN ; ALI
资助项目National Natural Science Foundation of China[12203005] ; National Natural Science Foundation of China[42304188] ; National Natural Science Foundation of China[U2031209] ; National Natural Science Foundation of China[2021YFA0718500] ; National Natural Science Foundation of China[2023TSYCLJ0053] ; National Key R&D Program of China[2024D14015] ; Tianshan Innovation Team Program of Xinjiang Uygur Autonomous Region[2022-XBQNXZ-016] ; Chinese Academy of Sciences (CAS) 'Light of West China' Program[2023D01A13] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001476768400001
出版者OXFORD UNIV PRESS
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; Tianshan Innovation Team Program of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences (CAS) 'Light of West China' Program ; Natural Science Foundation of Xinjiang Uygur Autonomous Region
源URL[http://ir.xao.ac.cn/handle/45760611-7/7714]  
专题光学天文与技术应用研究室_变星研究团组
通讯作者Zhang, Jicheng; Zhao, Yong; Esamdin, Ali
作者单位1.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, 19 Xinjiekou Wai St, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
3.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 101408, Peoples R China
4.Kashgar Meteorol Bur, 5 Dazhong Rd, Kashgar 844000, Xinjiang Uygur, Peoples R China
5.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100101, Peoples R China
6.Beijing Normal Univ, Sch Phys & Astron, 19 Xinjiekou Wai St, Beijing 100875, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Jicheng,Zhao, Yong,Esamdin, Ali,et al. Astronomical seeing with DIMM and wind-speed distributions with ERA5 data at the Muztagh-Ata site on the Pamir Plateau[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2025,539(3):2077-2087.
APA Zhang, Jicheng.,Zhao, Yong.,Esamdin, Ali.,Niu, Hubiao.,Gao, Jian.,...&Yuan, Haibo.(2025).Astronomical seeing with DIMM and wind-speed distributions with ERA5 data at the Muztagh-Ata site on the Pamir Plateau.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,539(3),2077-2087.
MLA Zhang, Jicheng,et al."Astronomical seeing with DIMM and wind-speed distributions with ERA5 data at the Muztagh-Ata site on the Pamir Plateau".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 539.3(2025):2077-2087.

入库方式： OAI收割

来源：新疆天文台

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