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投稿时间：2007-06-25 修订日期：2008-02-01
投稿时间：2007-06-25 修订日期：2008-02-01
中文摘要: 利用常规观测资料以及中尺度数值模式MM5V3.7的模拟结果，对2007年3月3—5日东北地区罕
见暴雪过程成因进行了分析。结果表明：高低空垂直切变明显和高层辐散与低层辐合相配置
导致的强上升运动，以及中低层深厚的正涡度产生和维持是强暴雪形成的动力机制；干冷空
气侵入是产生暴雪的触发因素；北上低涡东侧的偏南气流携带来自东海和南海两个源地的充
沛水汽直抵东北地区，是产生东北暴雪的重要原因之一。
Abstract:Based on the routine observational data and the result of the Meso scale Model
(MM5V3.7) simulation, the cause of snowstorm process in northeast of china in Ma
r.3 5, 2007 was analyzed. The results indicate that vertical shear of upper and
lower air and strong ascending caused by upper air divergence and lower air con
vergence, as well as the generation and maintenance of mid lower air positive v
orticity are the dynamical mechanism, and the cold and dry air invasion is the t
rigger factor. Profuse water vapor from East Sea and South Sea with northward ai
rflow from south at east of cyclone is the important reason of snowstorm.
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基金项目:中国气象局气象新技术推广预报员专项(CMATG2008Yol),灾害天气国家重点实验室开放课题
资助
引用文本：
秦华锋,金荣花,2008.“0703”东北暴雪成因的数值模拟研究[J].气象,34(4):30-38.
Qin Huafeng,Jin Ronghua,2008.Numerical Simulation Study of the Cause of Snowstorm Process in Northeast of China on March 3 5 of 2007[J].Meteor Mon,34(4):30-38.
秦华锋,金荣花,2008.“0703”东北暴雪成因的数值模拟研究[J].气象,34(4):30-38.
Qin Huafeng,Jin Ronghua,2008.Numerical Simulation Study of the Cause of Snowstorm Process in Northeast of China on March 3 5 of 2007[J].Meteor Mon,34(4):30-38.