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First Blowing Snow Measurement at Zhongshan Station in Antarctica Using Ceilometer.

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Bibliographic Details
Title: First Blowing Snow Measurement at Zhongshan Station in Antarctica Using Ceilometer.
Authors: Ye, Jin1,2 (AUTHOR), Liu, Lei1,2 (AUTHOR) liulei17c@nudt.edu.cn, Ding, Jinfeng1,2 (AUTHOR) dingjinfeng@nudt.edu.cn, Liu, Xichuan1,2 (AUTHOR), Xie, Hailing1,2 (AUTHOR), Chen, Yibing1,2 (AUTHOR)
Source: Advances in Atmospheric Sciences. Dec2025, Vol. 42 Issue 12, p2518-2528. 11p.
Subject Terms: *Ceilometer, *Ice crystals, *Snowstorms, *Weather, *Antarctic ice, Antarctic climate
Geographic Terms: Antarctica
Abstract (English): Blowing snow events in Antarctica play an important role in the climate system, affecting the mass balance of the ice sheet and the radiative effects of the atmosphere. Due to the harsh weather conditions in Antarctica, ground-based detection data is deficient, making it difficult to accurately obtain both the frequency of blowing snow and the evolution of the height of the blowing snow layer. In this study, we introduce a new method based on the raw signal from the C12 ceilometer to separate clear-sky, cloud, snowfall, and blowing snow conditions within a height of 500 meters above the surface of Zhongshan Station. Research has shown that more than 80% of the blowing snow at Zhongshan Station is affected by cyclonic systems, and less than 20% of the blowing snow is affected by katabatic winds. Further, Antarctic blowing snow is closely related to snowfall. When there is heavy snowfall (even a blizzard), a smaller wind speed can lead to the formation of a deep blowing snow layer within an hour after snowfall. However, as time increases, the threshold wind speed required to generate blowing snow significantly increases, and the thickness of the blowing snow layer becomes shallower. [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 摘要: 南极洲吹雪现象在气候系统中发挥着重要作用, 显著影响着区域冰盖质量平衡和大气辐射效应。 由于南极洲气候条件恶劣, 地面观测资料不足, 因此难以准确获取吹雪频率和吹雪层高度。 在这项研究中, 作者提出了一种基于国产 C12 型激光云高仪原始信号来区分中山站地表附近晴空、云、降雪和吹雪现象的新方法。 研究表明, 中山站 80%以上的吹雪现象受到气旋系统的影响, 不到 20%的吹雪现象受到南极下降风的影响。 此外, 南极吹雪与降雪密切相关。 当降雪量较大时 (甚至达到暴风雪), 在降雪后一小时内, 即使较小的风速也可导致形成深厚的吹雪层。 但是, 随着时间的增加, 产生吹雪所需的风速阈值会明显增加, 吹雪层的厚度也会逐渐变薄。 [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
Description
Abstract:Blowing snow events in Antarctica play an important role in the climate system, affecting the mass balance of the ice sheet and the radiative effects of the atmosphere. Due to the harsh weather conditions in Antarctica, ground-based detection data is deficient, making it difficult to accurately obtain both the frequency of blowing snow and the evolution of the height of the blowing snow layer. In this study, we introduce a new method based on the raw signal from the C12 ceilometer to separate clear-sky, cloud, snowfall, and blowing snow conditions within a height of 500 meters above the surface of Zhongshan Station. Research has shown that more than 80% of the blowing snow at Zhongshan Station is affected by cyclonic systems, and less than 20% of the blowing snow is affected by katabatic winds. Further, Antarctic blowing snow is closely related to snowfall. When there is heavy snowfall (even a blizzard), a smaller wind speed can lead to the formation of a deep blowing snow layer within an hour after snowfall. However, as time increases, the threshold wind speed required to generate blowing snow significantly increases, and the thickness of the blowing snow layer becomes shallower. [ABSTRACT FROM AUTHOR]
ISSN:02561530
DOI:10.1007/s00376-024-4172-0