沙漠与绿洲气象2013，Vol.7Issue(2)：9-14,6.
2011年深秋北疆暴雪过程成因分析
Cause Analysis of a Heavy Snowstorm over Northern Xinjiang in Late Autumn of 2011
摘要
Abstract
The cause of a snowstorm process over the northern Xinjiang in October 2011 is analyzed in this paper.The results show that the snowstorm was formed when the European ridge declined and Urals trough moved into Xinjiang; the secondary circulation caused by the dynamic frontogenesis mechanism with thermal force and dynamic force directly generated the mesoscale system for the snowstorm; the snowstorm happened in the area where MPV1 was above 0 and growed obviously while the absolute value of MPV2 also got big growth,and θe lines were dense;the MPV distribution structure promoted the large growth of vertical vorticity,which was beneficial to the generation and strenthening of snowstorm.High and low-level jet made great contribution to water vapor transfer,the development of circulation and water vapor condensed.关键词
暴雪成因/次级环流/不稳定条件/水汽输送/高低空急流Key words
snowstorm cause / secondary circulation /instability condition/ vapor transfer/ high and low-level jet分类
天文与地球科学引用本文复制引用
李如琦,牟欢,肉孜·阿基,唐冶..2011年深秋北疆暴雪过程成因分析[J].沙漠与绿洲气象,2013,7(2):9-14,6.基金项目
科技部公益性行业(气象)科研专项(GYHY201106007)资助. （气象）
