安徽农业科学2011，Vol.39Issue(6)：3554-3558,5.
2007年3月3～5日东北特大暴雪过程分析
Analysis on the Heavy Snowstorm Process in Northeast China during March 3 - 5 in 2007
効碧鸿 1宋长远 1张晶 2张凯荣1
作者信息
- 1. 辽宁省本溪市气象局,辽宁本溪,117000
- 2. 辽宁省营口市气象局,辽宁营口,115000
- 折叠
摘要
Abstract
by using the routine observation data,the satellite cloud images,the synoptics analysis and the physical quantity field diagnosis analysis,the heavy snowstorm process which happened in Northeast China during March 3 -5 in 2007 was analyzed. The results showed that the main influence systems in the process were the eastward shift and up north of southern cyclone ,the combination of south and north high-altitude trough in 500 hPa. The dynamic mechanisms of heavy snowstorm formation were the strong ascending movement which was caused by the configuration of high-layer divergence and low-layer convergence,the generation and maintenance of deep positive vorticity in the middle and low layers. The sufficient water vapor in East China Sea and South China Sea which was brought by 700 hPa low-altitude by south jet stream reached Northeast China.The falling zones of strong precipitation were consistent with the big value zones of 850 hPa positive vorticity and 200 hPa positive divergence.Meanwhile,the intensity of temperature advection and the position of cold warm transition zone could reflect well the intensity and falling zone of precipitation.关键词
暴雪/大尺度环流形势/影响系统/诊断分析Key words
Snowstorm/ Large-scale circulation situation/ Influence system/ Diagnosis analysis分类
天文与地球科学引用本文复制引用
効碧鸿,宋长远,张晶,张凯荣..2007年3月3～5日东北特大暴雪过程分析[J].安徽农业科学,2011,39(6):3554-3558,5.
