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

doi:10.1093/mnras/stae2586

	Characterizing long-term astroclimate parameters at the Muztagh-Ata site in the Pamir plateau with ERA5 and MERRA-2 data
	Zhang, Jicheng 1,2; Zhao, Yong 3; Gao, Jian 1,2; Esamdin, Ali4,5 ; Zhang, Wenzhao 1,2; Yuan, Haibo 1,2; Feng, Guojie4 ; Niu, Hubiao4 ; Gu, Wenbo4,5 ; Zhang, Xuan4 ; Bai, Chunhai4
	2024-11-30
Source Publication	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN	0035-8711
Volume	535 Issue:4 Pages:3543-3549
Contribution Rank	4
Abstract	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.
Keyword	atmospheric effects methods: statistical site testing telescopes
DOI	10.1093/mnras/stae2586
Indexed By	SCI
Language	英语
WOS Keyword	TELESCOPE ; SKY
Funding Project	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 Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:001378145400001
Publisher	OXFORD UNIV PRESS
Funding Organization	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
Citation statistics	Cited Times:2[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/7350
Collection	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
Corresponding Author	Zhang, Jicheng; Zhao, Yong
Affiliation	1.Beijing Normal Univ, Inst Frontiers Astron & Astrophys, Beijing 100875, Peoples R China 2.Beijing Normal Univ, Sch Phys & Astron, Beijing 100875, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
Recommended Citation 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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