2025年1月贵州毕节低温雨雪天气过程解析

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Abstract In order to explore the causes and mechanisms of low-temperature rain and snow weather,based on MICAPS sounding data and ground observation data,the circulation background,influencing system,and atmospheric structure characteristics of low-temperature rain and snow weather in Bijie City from January 7 to November 2025 were analyzed.The results show that the deep trough in the east is obvious at 500 hPa,and the development of the short wave trough in the west is strengthened.The 700 hPa low-level jet stream is obvious,and there is sufficient water vapor transport from South China to Jiangnan region.The 850 hPa warm and humid airflow is active,and Bijie is located in the front of the high-altitude trough.Water vapor transport,airflow convergence,and atmospheric stratification conditions play important roles in the process of snowfall.The research results provide reference for improving the accuracy of forecasting ground temperature rain and snow weather.

Key words： low temperature rain and snow weather snow cover road icing glaze circulation characteristics

Received: 14 March 2025

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	Chen Linqin
	Chen Bo
	Yao Lang
	Cheng Chunli
	Xiong Shan

Cite this article:

Chen Linqin,Chen Bo,Yao Lang等. Analysis of low temperature rain and snow weather process in Bijie,Guizhou Province in January 2025[J]. Meteorological Hydrological and Marine Instrument, 2025, 42(4): 93-95.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2025/V42/I4/93

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