铁岭地区一次强对流天气过程成因分析

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中图分类号P458.121 文献标识码A 文章编号 1007-7731（2025）17-0104-05

DOI号 10.16377/j.cnki.issn1007-7731.2025.17.026

Analysis of the causes of a severe convective weather process in the Tieling region

BU Tianhui1REN Zhe² XIE Yuxin²LIU Yingying² ZHU Wentao² （ 1 Diaobingshan Municipal Meteorological Bureau of Tieling City，Diaobingshan 1127Oo，China; ²Changtu Meteorological Bureau，Changtu 11250o，China）

AbstractThe studyused conventionalobservation data，numerical forecast products，andother materials to conductadiagnostic analysis of thecauses ofasevereconvective weather process，characterized byhail，tunderstorm gales，andshort-termheavyrainfall，thatoccurred inTieling，Liaoning，fromtheeveningofSeptember8tothenightof September 9，2O21.Theanalysis was carried out from aspects including circulation background，physical quantity characteristics，and radar echo analysis.The results indicated that thissevere convective weather process was influenced byacombinationoffactors，includingthe Northeast ColdVortex，upper-level jet streams，mid-to-lowerlevel shear lines，andanunstable atmospheric structure characterized bydryandcold upper layers and warm and moist lowerlayers.The surface convergence line served as the key mechanism triggering the release ofunstable energy during thissevere convective weather event.Aditionall，factors such as significant convective available potential energy， moderate vertical wind shear，and an appropriate 0∘C layer height contributed to the widespread occurrence of hailstorms.The large hailfallareas from thisevent showedagoodcorrespondencewith theregionsofhighvertical accumulated liquid water content estimated by the SWAN model，providing some predictive significance for the occurrence of hailstorms，including large hailstones.Additionaly，the warning signals for this event were issed using a refined release strategy， providing technical references for targeted preventive measures.

Keywordssevere convective weather; agricultural production; agricultural disaster mitigation; hail

强对流天气是一类持续时间短、突发性强且破坏性大的灾害性天气，主要包括短时强降水（小时降水量达到 20mm 及以上）雷暴大风（瞬时最大风速 gtrsim17.2m/s ）及冰雹等对人类生产生活影响大的灾害性天气过程。（剩余5583字）