气候变化领域集成服务门户(CCPortal): Observations of Drifting Snow Using FlowCapt Sensors in the Southern Altai Mountains, Central Asia

CCPortal

DOI	10.3390/w14060845
	Observations of Drifting Snow Using FlowCapt Sensors in the Southern Altai Mountains, Central Asia
	Zhang, Wei; He, Jianqiao; Chen, An'an; Wu, Xuejiao; Shen, Yongping
通讯作者	Zhang, W (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Koktokay Snow Stn, Lanzhou 730000, Peoples R China.
发表日期	2022
EISSN	2073-4441
卷号	14 期号:6
英文摘要	Drifting snow is a significant factor in snow redistribution and cascading snow incidents. However, field observations of drifting snow are relatively difficult due to limitations in observation technology, and drifting snow observation data are scarce. The FlowCapt sensor is a relatively stable sensor that has been widely used in recent years to obtain drifting snow observations. This study presents the results from two FlowCapt sensors that were employed to obtain field observations of drifting snow during the 2017-2018 snow season in the southern Altai Mountains, Central Asia, where the snow cover is widely distributed. The results demonstrate that the FlowCapt sensor can successfully acquire stable field observations of drifting snow. Drifting snow occurs mainly within the height range of 80-cm zone above the snow surface, which accounts for 97.73% of the total snow mass transport. There were three typical snowdrift events during the 2017-2018 observation period, and the total snowdrift flux caused during these key events accounted for 87.5% of the total snow mass transport. Wind speed controls the occurrence of drifting snow, and the threshold wind speed (friction velocity) for drifting snow is approximately 3.0 m/s (0.15 m/s); the potential for drifting snow increases rapidly above 3.0 m/s, with drifting snow essentially being inevitable for wind speeds above 7.0 m/s. Similarly, the snowdrift flux is also controlled by wind speed. The observed maximum snowdrift flux reaches 192.00 g/(m(2)center dot s) and the total snow transport is 584.9 kg/m during the snow season. Although drifting snow will lead to a redistribution of the snow mass, any accumulation or loss of the snow mass is also affected synergistically by other factors, such as topography and snow properties. This study provides a paradigm for establishing a field observation network for drifting snow monitoring in the southern Altai Mountains and bridges the gaps toward elucidating the mechanisms of drifting snow in the Altai Mountains of Central Asia. A broader network of drifting snow observations will provide key data for the prevention and control of drifting snow incidents, such as the design height of windbreak fences installed on both sides of highways.
关键词	HYDROLOGICAL PROCESSES SNOWDRIFT MEASUREMENTS ACOUSTIC SENSOR ADELIE LAND RIVER-BASIN MASS FLUXES WIND-SPEED VEGETATION COVER THRESHOLD
英文关键词	drifting snow; snow cover; FlowCapt; northern Xinjiang; Altai Mountains
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000774590100001
来源期刊	WATER
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/253902
作者单位	[Zhang, Wei; He, Jianqiao; Wu, Xuejiao; Shen, Yongping] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Koktokay Snow Stn, Lanzhou 730000, Peoples R China; [Chen, An'an] Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Wei,He, Jianqiao,Chen, An'an,et al. Observations of Drifting Snow Using FlowCapt Sensors in the Southern Altai Mountains, Central Asia[J]. 中国科学院西北生态环境资源研究院,2022,14(6).
APA	Zhang, Wei,He, Jianqiao,Chen, An'an,Wu, Xuejiao,&Shen, Yongping.(2022).Observations of Drifting Snow Using FlowCapt Sensors in the Southern Altai Mountains, Central Asia.WATER,14(6).
MLA	Zhang, Wei,et al."Observations of Drifting Snow Using FlowCapt Sensors in the Southern Altai Mountains, Central Asia".WATER 14.6(2022).