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| Astronomical seeing with DIMM and wind-speed distributions with ERA5 data at the Muztagh-Ata site on the Pamir Plateau | |
Zhang, Jicheng1,2; Zhao, Yong3; Esamdin, Ali4,5 ; Niu, Hubiao4; Gao, Jian1,2; Zibibula, Reziwagu6; Bai, Chunhai4; Zhang, Xuan4; Feng, Guojie4; Lin, Lin1,2; Zhang, Wenzhao1,2; Gu, Wenbo4,5; Yuan, Haibo1,2
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| 2025-05-01 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 539Issue:3Pages:2077-2087 |
| Contribution Rank | 4 |
| Abstract | 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. |
| Keyword | methods: statistical site testing |
| DOI | 10.1093/mnras/staf642 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | OPTICAL TURBULENCE ; VERTICAL-DISTRIBUTION ; IMAGE QUALITY ; TELESCOPE ; SKY ; RESOLUTION ; CAMPAIGN ; ALI |
| Funding Project | 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 Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001476768400001 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | 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 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/7715 |
| Collection | 光学天文与技术应用研究室_变星研究团组 |
| Corresponding Author | Zhang, Jicheng; Zhao, Yong; Esamdin, Ali |
| Affiliation | 1.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, 19 Xinjiekou Wai St, Beijing 100875, Peoples R China 2.Beijing Normal Univ, Sch Phys & Astron, 19 Xinjiekou Wai St, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 101408, Peoples R China 6.Kashgar Meteorol Bur, 5 Dazhong Rd, Kashgar 844000, Xinjiang Uygur, Peoples R China |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation 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. |
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| Zhang-2025-Astronomi（1897KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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