基于多源观测资料对湘潭一次暴雪过程分析

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Abstract Using MICAPS data,satellite and dual polarization radar products and other detection data,the environmental conditions and causes of a large-scale blizzard process that occurred in Xiangtan from January 21 to 22,2024 were analyzed in depth.The results showed that the blizzard weather process was formed by the intersection of cold and warm air over Xiangtan,and the southwest jet stream climbed along the cold pad.The central part of Hunan was located at the outlet of the 700 hPa jet stream,with good dynamic and water vapor conditions.The sounding curve indicates that the temperature stratification of rain and snow phase transition is key,with 700 hPa ＜ 0 ℃,850 hPa < -4 ℃,ground temperature ≤ 0 ℃,and a sudden drop in ground temperature before snow accumulation.The satellite inversion features show an increase in 850 hPa specific humidity and cloud top height,as well as a significant decrease in cloud top temperature and GIIRS temperature profiles,which can be used to predict the transition of rain and snow phases.There are significant differences in the basic reflectivity and dual polarization parameter characteristics between blizzard and snow hail,which can effectively identify the two types of precipitation particles.When the transition between rain and snow occurs,the reflectance factor and differential reflectance decrease,and their distribution gradually becomes uniform,with a relatively high correlation coefficient,showing a precipitation phase dominated by dry snow.The research conclusion can provide a basis for short-term forecasting of heavy snowfall.

Key words： blizzard Fengyun satellite products dual polarization radar correlation coefficient differential reflectance

Received: 09 May 2024

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	Articles by authors
	He Ning
	Dai Jin
	An Ming
	Huang Xinyi

Cite this article:

He Ning,Dai Jin,An Ming等. Analysis of ablizzard process in Xiangtan based on multi source observation data[J]. Meteorological Hydrological and Marine Instrument, 2025, 42(4): 82-86.

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http://www.qxswhy.com/EN/ OR http://www.qxswhy.com/EN/Y2025/V42/I4/82

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[2]	杨祖祥,谢亦峰,项阳,等.2018年1月初安徽特大暴雪的双偏振雷达观测分析 [J].暴雨灾害,2019,38 (1):31-40.
[3]	张晨宇,毛智政,燕成玉,等.秦皇岛一次降雪天气过程分析及双极化雷达应用 [J].农业灾害研究,2020,10 (9):102-105.
[4]	唐明晖,俞小鼎,王青霞,等.湖南一次雨雪天气降水相变的环境条件与双偏振雷达特征分析[J].暴雨灾害,2023,42 (3):293-302.
[5]	刘红武,李振,唐林,等.2018年12月湖南极端低温暴雪环流特征及成因分析 [J].暴雨灾害,2020,39 (5):487-495.
[6]	杨成芳,刘畅.一次江淮气旋暴雪的积雪特征及气象影响因子分析 [J].气象,2019,45 (2):191-202.
[7]	沈永生,杨远航,章达华,等.雨雪冰冻天气多普勒雷达产品特征 [J].气象科技,2010,38 (2):189-192,282.
[8]	李伟光,刘少军,李勋,等.卫星遥感在海南气象服务中的应用进展 [J].气象科技进展,2020,10 (4):114-119.
[9]	周涛,李娜,王清川,等.多普勒雷达资料在强降雪相态转变过程的研究应用 [J].沙漠与绿洲气象,2021,15 (6):68-74.
[10]	王珊珊,钟敏,陈璇,等.2022年湖北省两次雨雪过程对比及预报偏差分析 [J].气象,2023,49 (7):819-829.
[11]	王喜,张玲,郑炜,等.江苏3次不同量级降雪过程的对比分析 [J].中低纬山地气象,2021,45 (3):9-17.