气候变化领域集成服务门户(CCPortal): Snowfall in Northern Finland derives mostly from ice clouds

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DOI	10.5194/acp-22-13551-2022
	Snowfall in Northern Finland derives mostly from ice clouds
	Mignani, Claudia; Zimmermann, Lukas; Kivi, Rigel; Berne, Alexis; Conen, Franz
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	13551
结束页码	13568
卷号	22 期号:20 页码:18
英文摘要	Clouds and precipitation play a critical role in the Earth's water cycle and energy budget. We present ground-level observations of snowfall coinciding with radiosonde launches in Sodankyla, Finland (67.367 degrees N, 26.629 degrees E) through a period of 8 cold months (October-April) in 2019 and 2020. They comprise 7401 depositing snow particles detected by a snowflake camera and 468 radiosonde profiles. Our results show that precipitating clouds were extending from ground to at least 2.7 km in altitude. Approximately one-quarter of them were mixed phase and the rest were likely fully glaciated. Estimations of the cloud top temperatures indicate that in roughly half of the snowfall events, ice might have been initiated through heterogeneous freezing. For such cases, the predicted ice-nucleating particle concentrations active at cloud top temperatures could explain the analysed ice crystal particle concentrations observed near ground in approximately one- to two-thirds of the cases. For the rest, ice multiplication was likely active. In a warmer climate, the relative proportion of solid to liquid cloud particles will probably decrease, with implications on the radiation balance.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000869792400001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273068
作者单位	University of Basel; Finnish Meteorological Institute; Swiss Federal Institutes of Technology Domain; Ecole Polytechnique Federale de Lausanne; Colorado State University
推荐引用方式 GB/T 7714	Mignani, Claudia,Zimmermann, Lukas,Kivi, Rigel,et al. Snowfall in Northern Finland derives mostly from ice clouds[J],2022,22(20):18.
APA	Mignani, Claudia,Zimmermann, Lukas,Kivi, Rigel,Berne, Alexis,&Conen, Franz.(2022).Snowfall in Northern Finland derives mostly from ice clouds.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(20),18.
MLA	Mignani, Claudia,et al."Snowfall in Northern Finland derives mostly from ice clouds".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.20(2022):18.