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DOI	10.1016/j.atmosres.2020.105410
	Eight-year analysis of radiative properties of clouds and its impact on melting on the Laohugou Glacier No. 12; western Qilian Mountains
	Chen J.; Du W.; Kang S.; Qin X.; Sun W.; Liu Y.; Jin Z.; Li Y.; Wang L.
发表日期	2021
ISSN	1698095
卷号	250
英文摘要	Cloud is an active component in the weather–climate system that modulates both the radiation balance and the water cycle of the earth system via physical, chemical, and radiative mechanisms. In this study, we used observations of meteorological variables recorded on the Laohugou Glacier No. 12 in the western Qilian Mountains during 2009–2017 to investigate the radiative properties of cloud and its impact on glacier melting. The quantified cloud fraction showed an evident seasonal cycle. The highest cloudiness typically occurred at 16:00 Beijing time, which was probably associated with the strength of local convection that produced frequent occurrence of low-level cumulus or cumulonimbus clouds. Most heavy precipitation events (>14 mm) occurred on overcast days, signified that at least half of the total precipitation could be attributed to transportation from meso- or large-scale atmospheric circulations. Relationships between modelled glacier melting, energy components and cloud fraction showed that clouds could importantly reduce glacier melting, the most important contributor to this process was the clouds impact on net shortwave radiation. Circulation analyses showed that ~7.8%, ~6.3%, and ~ 18.7% of overcast days could be clearly and uniquely attributed to Arctic air mass events, monsoon events, and westerlies events, respectively. The remaining overcast days (~67.2%) were influenced by multiple circulations, e.g., westerlies–monsoon, westerlies–Arctic air mass, monsoon–Arctic air mass, and westerlies–monsoon–Arctic air mass interactions. Monsoon potentially contributes a lot to precipitation in the western Qilian Mountains, future work should aim to do more atmospheric circulation analyses combining with isotopic tracing when precipitation occurs during overcast days. © 2020
英文关键词	Cloud; Energy balance; Glacier melting; Northeastern Tibetan Plateau; Radiation
语种	英语
scopus关键词	Atmospheric Research
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158273
作者单位	Qilian Shan Station of Glaciology and Eco-environment; State Key Laboratory of Cryospheric Science; Northwest Institute of Eco-environment and Resources; Chinese Academy of Sciences; Lanzhou; 730000; China; CAS Center for Excellence in Tibetan Plateau Earth Sciences; Chinese Academy of Sciences; Beijing; 100101; China; College of Population; Resources and Environment; Shandong Normal University; Jinan; 250000; China; University of Chinese Academy of Sciences; Beijing; 100101; China
推荐引用方式 GB/T 7714	Chen J.,Du W.,Kang S.,et al. Eight-year analysis of radiative properties of clouds and its impact on melting on the Laohugou Glacier No. 12; western Qilian Mountains[J]. 中国科学院西北生态环境资源研究院,2021,250.
APA	Chen J..,Du W..,Kang S..,Qin X..,Sun W..,...&Wang L..(2021).Eight-year analysis of radiative properties of clouds and its impact on melting on the Laohugou Glacier No. 12; western Qilian Mountains.,250.
MLA	Chen J.,et al."Eight-year analysis of radiative properties of clouds and its impact on melting on the Laohugou Glacier No. 12; western Qilian Mountains".250(2021).