2018年3月中旬吉林一次大暴雪天氣成因分析

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作者簡介 王慶玨（1995—），男，吉林通化人，助理工程師，主要從事氣象預(yù)報(bào)工作。

收稿日期 2023-08-22

Analysis of the Causes of A Heavy Snowstorm in Jilin Province in Mid March 2018

Wang Qing-jue et al（Linjiang Meteorological Bureau， Linjiang， Jilin 134600）

Abstract Used relevant data such as automatic station observation data and NCEP reanalysis data to analyze the cause of a heavy snow storm that occurred in Jilin Province in mid March 2018. The results indicate that this weather process was mainly formed under the combined action of low-level shear and surface cold front， with the southwest warm and humid air flow climbing on the cold pad to produce snowfall. The shear line and the head of the jet stream are both located in Jilin Province， with continuous northward transport of southwest water vapor. In addition， there is a significant convergence of water vapor flux over the snowfall area， providing rich water vapor conditions for the occurrence of this blizzard. The main source of water vapor for this snowfall is the southwest warm and humid air flow. Snowy weather is formed with the movement of temperature fronts. The addition of the easterly jet and the intrusion of the lower layers of the northerly airflow provided dynamic conditions for the occurrence of this blizzard.

Key words Jilin; Blizzard weather; Circulation situation; Physical quantity field

摘要 利用自動(dòng)站觀測(cè)資料、NCEP再分析資料等相關(guān)資料，對(duì)2018年3月中旬出現(xiàn)在吉林省的一次大暴雪天氣成因進(jìn)行分析。（剩余5613字）