气候变化领域集成服务门户(CCPortal): Statistics of cloud cover above the Ali Observatory, Tibet

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DOI	10.1093/mnras/stae582
	Statistics of cloud cover above the Ali Observatory, Tibet
	Qian, Xuan; Yao, Yongqiang; Wang, Hongshuai; Yin, Jia; Yalin, Li
发表日期	2024
ISSN	0035-8711
EISSN	1365-2966
起始页码	529
结束页码	2
卷号	529 期号:2
英文摘要	In this paper, the statistics of cloud cover at night from 2016 to 2018 above the Ali observatory has been summarized, using the meso-scale numerical model and the cameras (Canon and AllSky-340 Camera). Above the western Tibetan Plateau, in the area of 200 km x 200 km centred at the Ali site, the average cloud cover during night was basically less than 30 per cent in 2016, and the Ali site was located in the zone with small value around 20 per cent; large cloud cover always occurred in summer, with mean value above 50 per cent in most parts of this area; while in winter, the smallest cloud cover was basically below 10 per cent; in other seasons, the cloud cover was mostly less than 30 per cent, and the Ali site located in the zone with cloud cover below 10 per cent in autumn and below 20 per cent in spring. At each monitored field of view from 90 degrees to 45 degrees, the cloud cover varied little; the proportion of clear nights with cloud cover below 10 per cent was close to 60 per cent of total observable nights per year, and the less cloudy nights with cloud cover below 40 per cent accounted for more than 70 per cent, besides, the observable nights with cloud cover below 70 per cent was around 80 per cent every year. Generally, the cloud cover condition at the Ali observatory above the western plateau is excellent, there are always abundant observable nights, while a bit worse just in July and August. Meanwhile, the numerical model has been proved to be a reliable tool to estimate cloud cover conditions above the Tibetan Plateau.
英文关键词	atmospheric effects; methods: numerical; methods: statistical; site testing
语种	英语
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
WOS记录号	WOS:001182181700001
来源期刊	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301680
作者单位	Chinese Academy of Sciences; National Astronomical Observatory, CAS; Chinese Academy of Sciences; Aerospace Information Research Institute, CAS
推荐引用方式 GB/T 7714	Qian, Xuan,Yao, Yongqiang,Wang, Hongshuai,et al. Statistics of cloud cover above the Ali Observatory, Tibet[J],2024,529(2).
APA	Qian, Xuan,Yao, Yongqiang,Wang, Hongshuai,Yin, Jia,&Yalin, Li.(2024).Statistics of cloud cover above the Ali Observatory, Tibet.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,529(2).
MLA	Qian, Xuan,et al."Statistics of cloud cover above the Ali Observatory, Tibet".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 529.2(2024).