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Modelling of atmospheric optical turbulence with the Weather Research and Forecasting model at the Ali observatory, Tibet

文献类型：期刊论文

作者Qian, Xuan3; Yao, Yongqiang3; Zou, Lei1; Wang, Hongshuai2; Yin, Jia3,4; Li, Yao3,4
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
出版日期2021-07-01
卷号505期号:1页码:582-592
关键词turbulence atmospheric effects methods: numerical site testing
ISSN号0035-8711
DOI10.1093/mnras/stab1316
通讯作者Qian, Xuan(qianxuan@nao.cas.cn) ; Zou, Lei(zoulei@igsnrr.ac.cn) ; Wang, Hongshuai(wanghs@nao.cas.cn)
英文摘要In this study, we make use of a meso-scale numerical model to obtain the parameters of atmospheric optical turbulence at the Ali observatory above the Tibetan Plateau. These parameters are essential for ground-based optical observations and some adaptive optics techniques. We present the characterization of the vertical distributions of atmospheric optical turbulence C-n(2) and the main integral parameters, such as coherence time tau(0), isoplanatic angle theta(0) and seeing epsilon(0) derived from C-n(2). Meanwhile, the measurement of C-n(2) obtained with a radiosonde instrument is used to quantify the model performance on reconstructing the optical turbulence above the site. This shows a high level of agreement and provides a reliable tool for astronomical site testing. The results presented in this paper demonstrate the good behaviour of the atmospheric optical turbulence condition at Ali, particularly during the summer half of the year. We find yearly median values of seeing epsilon(0) = 0.47 arcsec, isoplanatic angle theta(0) = 4.35 arcsec and atmospheric coherence time tau(0) = 5.52 ms in 2016, and we also provide independent confirmation of the potential of the Ali site in adaptive optics. Moreover, it has been proven that meso-scale models can provide reliable estimations of atmospheric optical turbulence conditions above an astronomical site on the Tibetan Plateau.
WOS关键词SIMULATIONS ; SITES ; DOME ; TOOL
资助项目National Natural Science Foundation of China (NSFC)[11973004] ; National Natural Science Foundation of China (NSFC)[11203044]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000671453100039
出版者OXFORD UNIV PRESS
资助机构National Natural Science Foundation of China (NSFC)
源URL[http://ir.igsnrr.ac.cn/handle/311030/163823]  
专题中国科学院地理科学与资源研究所
通讯作者Qian, Xuan; Zou, Lei; Wang, Hongshuai
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11 Datun Rd, Beijing 100101, Peoples R China
2.Kaiyang Space Technol Co LTD, 8 Malianwa North Rd, Beijing 100085, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ China, 20A Datun Rd, Beijing, Peoples R China
4.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Qian, Xuan,Yao, Yongqiang,Zou, Lei,et al. Modelling of atmospheric optical turbulence with the Weather Research and Forecasting model at the Ali observatory, Tibet[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,505(1):582-592.
APA Qian, Xuan,Yao, Yongqiang,Zou, Lei,Wang, Hongshuai,Yin, Jia,&Li, Yao.(2021).Modelling of atmospheric optical turbulence with the Weather Research and Forecasting model at the Ali observatory, Tibet.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,505(1),582-592.
MLA Qian, Xuan,et al."Modelling of atmospheric optical turbulence with the Weather Research and Forecasting model at the Ali observatory, Tibet".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 505.1(2021):582-592.

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来源：地理科学与资源研究所

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