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Position: Home > Articles > Analysis on the Gale and Dust Weather in Jilin Province during April 7-9,2010 Journal of Anhui Agricultural Sciences 2010,38 (30) 17139-17142+17145

2010年4月7~9日吉林省大风沙尘天气分析

作  者:
吴恒;冯旭;郭维
单  位:
吉林省四平市气象局;吉林省气象局
关键词:
大风;沙尘;气压梯度;动量下传;沙源
摘  要:
2010年4月7~9日吉林省连续3日出现大风沙尘天气,通过对天气形势及卫星云图和相应物理量场的分析得出:蒙古气旋东移形成大的气压梯度是大风形成的主要原因;高空涡度平流、中低空温度平流、促使地面低压强烈发展生成新的锋面气旋是大风形成的中尺度系统;动量下传加大了地面的强风和沙尘天气。
译  名:
Analysis on the Gale and Dust Weather in Jilin Province during April 7-9,2010
作  者:
WU Heng et al (Siping Meteorological Bureau in Jilin Province,Siping,Jilin 136000)
关键词:
Gale; Dust; Air-pressure gradient; Momentum down-transmission; Sand source
摘  要:
During April 7-9,2010,the gale and dust weather appeared in Jilin Province. By analyzing the weather situation,the satellite cloud image and the relative physical quantity field,it was found that the great air-pressure gradient which was formed by the eastward shift of Mongolian cyclone was the main reason of gale formation. The high-altitude vorticity advection and the temperature advection in the middle-low altitude promoted the ground low-pressure to develop strongly and generate the new frontal surface cyclone which was the meso-scale system of gale formation. The momentum down-transmission enhanced the strong wind and dust weather on the ground.

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