摘要
利用探空、地面资料分析了1955—2002年甘肃省发生强沙尘暴天气的环流特征,揭示出甘肃沙尘暴天气的5种环流类型:冷锋后偏西型、强锋区下动量下传型、冷高压南部型、热低压前部型和河西小槽型的平均环流场特征。在此基础上,分析指出造成甘肃省冬、春季强沙尘暴天气的影响关键区和关键天气系统,并利用场相似预报方法建立了甘肃省冬、春季强沙尘暴预报业务系统,在实际业务中发挥了较好的效益。
The high-circumfluent pattern of strong sandstorm in Gansu province from 1995 to 2002 was analyzed by using the high and surface meteorological data. It was founded out there are 5 high-circumfluent patterns of the strong sandstorm, which are cold front pattern, radial momentum pattern, cold high-pressure pattern, hot low-pressure pattern, and short-trough pattern. The study results have show us where is the important area and which is the important meteorological system on 500 hPa resulting in the strong sandstorm in winter and spring in Gansu. Based on the above study, a strong sandstorm forecasting operational system has been formulated by using similar parameters, and the system has been proved to be efficient in forecasting operation.
出处
《中国沙漠》
CSCD
北大核心
2004年第6期724-728,共5页
Journal of Desert Research
基金
科技部社会公益类项目<中国西北地区沙尘暴监测预警系统>资助
