Astronomical seeing and wind speed distributions with ERA5 data at Lenghu site on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Zhu, Liming4,5,6; Zhang, Hanjiu1,4,6; Sun, Gang4,5,6; Li, Xuebin4,5,6; Yang, Fan3,7; He, Fei2,3; Weng, Ningquan1,4,5,6; Deng, Licai3,7 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2023-04-13 |
| 卷号 | 522期号:1页码:1419-1427 |
| ISSN号 | 0035-8711 |
| 关键词 | turbulence atmospheric effects methods: data analysis site testing |
| DOI | 10.1093/mnras/stad1006 |
| 英文摘要 | In this paper, we present comprehensive night-time seeing statistics at the Lenghu site using data collected between 2018 and 2021 using a differential image motion monitor. The results show that the median seeing is 0.80 arcsec, which slightly larger than that previously reported due to climate change. Additionally, we investigated the annual, seasonal, and monthly seeing statistics, as well as possible hourly seeing trends in each season. The results demonstrate that the seeing at the Lenghu site is very stable, with monthly median seeing varying from 0.6 to 0.95 arcsec. The seasonal dependence of seeing shows obvious variations over different years. The best year of seeing was 2019 (0.74 arcsec), and the best seeing occurred in spring (0.68 arcsec) to early summer (June, 0.63 arcsec), while the worst seeing occurred in winter (0.80 arcsec). The minimum seeing value throughout the night is at approximately three hours before dawn. Furthermore, wind speed profiles, especially V-200 (particularly the wind speed at 200 mbar), are important parameters for evaluating astronomical sites in terms of their suitability for adaptive optics. We first show the complete monthly average behaviours of the wind speed profile and V-200 using the European Center for Medium-Range Weather Forecast reanalysis data sets. The results demonstrate the annual periodicity and variability of V-200, and the yearly V-200 modulation function is also provided. V-200 maintains large values throughout the autumn (average: 35.01 m s(-1)) and winter (average: 34.33 m s(-1)), while the minimum V-200 occurs in spring (average: 27.93 m s(-1)). |
| WOS关键词 | HIGH-ALTITUDE WIND ; DIFFERENTIAL IMAGE MOTION ; OPTICAL TURBULENCE ; TESTING CAMPAIGN ; ADAPTIVE OPTICS ; STATISTICS ; TELESCOPE ; OUKAIMEDEN ; PROFILES ; VELOCITY |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | OXFORD UNIV PRESS |
| WOS记录号 | WOS:001023504200097 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111364]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Zhu, Liming; Sun, Gang; Deng, Licai |
| 作者单位 | 1.Univ Sci & Technol China, Sch Environm Sci & Optoelect Technol, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 3.China West Normal Univ, Sch Phys & Astron, Nanchong 637002, Peoples R China 4.Chinese Acad Sci, HFIPS, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, Hefei 230031, Peoples R China 5.Univ Sci & Technol China, Sci Isl Branch, Grad Sch, Hefei 230026, Peoples R China 6.Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China 7.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Liming,Zhang, Hanjiu,Sun, Gang,et al. Astronomical seeing and wind speed distributions with ERA5 data at Lenghu site on the Tibetan Plateau[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2023,522(1):1419-1427. |
| APA | Zhu, Liming.,Zhang, Hanjiu.,Sun, Gang.,Li, Xuebin.,Yang, Fan.,...&Deng, Licai.(2023).Astronomical seeing and wind speed distributions with ERA5 data at Lenghu site on the Tibetan Plateau.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,522(1),1419-1427. |
| MLA | Zhu, Liming,et al."Astronomical seeing and wind speed distributions with ERA5 data at Lenghu site on the Tibetan Plateau".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 522.1(2023):1419-1427. |
入库方式： OAI收割
来源：地质与地球物理研究所
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