THE MESOSCALE ANALYSIS OF SEVERE DUST DEVIL FORMATION OVER THE NORTH-WEST OF CHINA

Based on GMS satellite data,the formations of the six severe dust-devil events over the North-west of China are analysed The results indicate that the genesis of dust-devil is caused by mesoscale systems,which include the mesoscale-α squall line system,the mesoscale- β paēě severe convective system and the mesoscale convective complex The characteristics,development process and large scale environment of these mesoscale systems are also analysed in the work