Applying artificial snowfall to reduce the melting of the Muz Taw Glacier, Sawir Mountains

冰川 反照率(炼金术) 降水 冰川物质平衡 雪线 雪地 地质学 自动气象站 环境科学 高度(三角形) 气候学 堆积带 自然地理学 大气科学 冰层 气象学 冰流 地貌学 地理 积雪 海冰 艺术 表演艺术 艺术史 几何学 数学
作者
Feiteng Wang,Xiaoying Yue,Lin Wang,Huilin Li,Zhenggang Du,Jing Ming,Zhongqin Li
出处
期刊:The Cryosphere [Copernicus Publications]
卷期号:14 (8): 2597-2606 被引量:14
标识
DOI:10.5194/tc-14-2597-2020
摘要

Abstract. The glaciers in the Sawir Mountains, Altai area, have been experiencing a continuing and accelerating ice loss since 1959, although the snowfall is abundant and evenly distributed over the year. As an attempt to reduce their melting, we carried out two artificial snowfall experiments on the Muz Taw Glacier during 19–22 August 2018. We measured the albedo and mass balance at different sites along the glacier before and after the experiments. Two automatic weather stations (AWSs) were set up at the equilibrium line altitude (ELA) of the glacier as the target area and the forefield as the control area to record the precipitation, respectively. A comparison of the two precipitation records from the two AWSs suggests that natural precipitation could account for up to 21 % of the snowfall received by the glacier during the experiments. Because of the snowfalls, the glacier's surface albedo significantly increased in the middle to upper part; the average mass loss during 18–24 August (after the experiments) decreased by between 32 and 41 mm w.e (14 %–17 %) compared to during 12–18 August (before the experiments); and the mass resulting from the snowfall accounted for between 42 % and 54 % of the total melt during 18–24 August. We also propose a mechanism involving artificial snowfall, albedo, and mass balance, and the feedbacks describing the role of snowfall in reducing the melting of the glacier. The current status of the work is primitive as it is a preliminary trial, and the conclusions need more controlling experiments to validate it against larger spatio-temporal scales in future.
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