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中文摘要: 分析了冬季产生东亚低空急流的大型环流特征及低空急流与内蒙古大(暴)雪的关系。结果表明,在东亚中纬度高空维持纬向强急流锋区的情况下,若有中亚冷槽分成南北两段东移,则极易有造成内蒙古大(暴)雪的东亚低空急流产生。指出可将产生这种环流特征的西风带大型环流的调整过程,作为内蒙古大(暴)雪天气的中期预警信号。而高低空急流的位置及强度又可作为降雪量及暴雪落区的短期预报指标。
中文关键词: 低空急流，大暴雪，环流，预报
Abstract:The features of the large scale circulation which creates East Asia low-level jet in winter and the relationships of the low-level jet and heavy snow or snowstorms in Inner Mongolia are analyzed.The results show that when there is westerly upper jet in middle latitudes and if the cold low pressure trough in central Asia moves eastward and split in two ones,the East Asia low-level jet which causes heavy snow or snowstorms in Inner Mongolia will be created easily.It is pointed out that the process of adjustment of the westerly belt-large scale circulation could be a sign of the middle range prediction of heavy snow or snow storms in Inner Mongolia.
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基金项目:中国气象局暴雪预报基础项目资助
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引用文本：
宫德吉,李彰俊,2001.低空急流与内蒙古的大(暴)雪[J].气象,27(12):3-7.
,2001.Low-level Jet and Heavy Snow or Snowstorms in Inner Mongolia[J].Meteor Mon,27(12):3-7.
宫德吉,李彰俊,2001.低空急流与内蒙古的大(暴)雪[J].气象,27(12):3-7.
,2001.Low-level Jet and Heavy Snow or Snowstorms in Inner Mongolia[J].Meteor Mon,27(12):3-7.