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Characterizing long-term astroclimate parameters at the Muztagh-Ata site in the Pamir plateau with ERA5 and MERRA-2 data

文献类型：期刊论文

作者Zhang, Jicheng1,5; Zhao, Yong4; Gao, Jian1,5; Esamdin, Ali2,3; Zhang, Wenzhao1,5; Yuan, Haibo1,5; Feng, Guojie3; Niu, Hubiao3; Gu, Wenbo2,3; Zhang, Xuan3
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2024-11-30
卷号535期号:4页码:3543-3549
关键词atmospheric effects methods: statistical site testing telescopes
ISSN号0035-8711
DOI10.1093/mnras/stae2586
产权排序4
英文摘要The Muztagh-Ata site, an excellent high-altitude ground-based astronomical observing site was discovered and monitored in the eastern part of the Pamir Plateau in the southwestern Xinjiang Uygur Autonomous Region of China. This site has been systematically monitored using various observational parameters since the spring of 2017. Yet, the site lacks long-term monitoring and statistical characterization of key variables such as: precipitable water vapour (PWV) and air temperature. These factors directly influence whether a site is suitable for hosting large ground-based telescopes across optical, infrared, submillimeter, and millimeter wavelengths in later stages. In this study, we utilized atmospheric reanalysis data sets from the Modern-Era Retrospective analysis for Research and Applications, Version 2 (MERRA-2) and ERA5, the fifth edition of the European Centre for Medium-Range Weather Forecasts (ECMWF). These data sets were combined with local observations from the weather station at the Muztagh-Ata site. Following the validation of ground-based and satellite data, we conducted a comparative analysis of PWV and temperature trends at the Muztagh-Ata site over a period of 24 yr. The weighted annual mean nighttime temperature and PWV increase at rates of 0.18 similar to 0.38 degrees C decade(-1) and 0.02 similar to 0.15 mm decade(-1), respectively. The nighttime PWV slightly decrease during the winter with rates of -0.01 similar to -0.03 mm decade(-1). This findings reveal that the PWV and temperature variation patterns at the Muztagh-Ata site are consistently stable, particularly in the results derived from the ERA5 data set. The comprehensive conditions at this site are highly suitable and advantageous for hosting large optical, infrared, submillimeter, and millimeter wavelengths telescope installations.
WOS关键词TELESCOPE ; SKY
资助项目NSFC[12203005] ; NSFC[42304188] ; NSFC[U2031209] ; National Natural Science Foundation of China[2021YFA0718500] ; National Natural Science Foundation of China[2023TSYCLJ0053] ; National Key R&D Pro-gram of China[2024D14015] ; Xinjiang Uygur Autonomous Region project[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:001378145400001
出版者OXFORD UNIV PRESS
资助机构NSFC ; National Natural Science Foundation of China ; National Key R&D Pro-gram of China ; Xinjiang Uygur Autonomous Region project ; 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/45760611-7/7349]  
专题光学天文与技术应用研究室_变星研究团组
光学天文与技术应用研究室_星团与星系研究团组
光学天文与技术应用研究室_光学天文技术研究团组
通讯作者Zhang, Jicheng; Zhao, Yong
作者单位1.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing 100875, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
5.Beijing Normal Univ, Sch Phys & Astron, Beijing 100875, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Jicheng,Zhao, Yong,Gao, Jian,et al. Characterizing long-term astroclimate parameters at the Muztagh-Ata site in the Pamir plateau with ERA5 and MERRA-2 data[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,535(4):3543-3549.
APA Zhang, Jicheng.,Zhao, Yong.,Gao, Jian.,Esamdin, Ali.,Zhang, Wenzhao.,...&Bai, Chunhai.(2024).Characterizing long-term astroclimate parameters at the Muztagh-Ata site in the Pamir plateau with ERA5 and MERRA-2 data.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,535(4),3543-3549.
MLA Zhang, Jicheng,et al."Characterizing long-term astroclimate parameters at the Muztagh-Ata site in the Pamir plateau with ERA5 and MERRA-2 data".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 535.4(2024):3543-3549.

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来源：新疆天文台

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