甘肃沙尘暴特征分析  

Analysis on the Characteristics of Sand Storm in Gansu Province

作　　者：孙玉莲[1,2] 祁晓龙 边学军 黄成秀 陈思宇 

机构地区：[1]甘肃省气象局,甘肃兰州730020 [2]临夏州气象局

出　　处：《现代农业科技》2015年第20期177-179,共3页Modern Agricultural Science and Technology

基　　金：临夏州主要气象灾害分析研究

摘　　要：采用统计学方法,通过对甘肃省18个代表站1955—2002年的沙尘暴实测资料,对发生在甘肃省区域性沙尘暴所发生的季节、地理分布、天气分型、移动路径、预报着眼点进行了统计分析,结果表明:强风是产生沙尘暴的动力,气温高、降水少、大风多是形成沙尘暴的主要原因。春季沙尘暴,其影响系统主要是蒙古冷涡、强锋区、地面冷锋和系统性高空槽,夏季沙尘暴,其影响系统主要是高空小槽、切变线、冷锋和热低压。Based on the statistical methods, we conducted the statistical analysis of sandstorm occurred season, geographical distribution, weather type,mobile path and forecast respect in Gansu Province by analyzing the sandstorm datas from 1955 to 2002 of eighteen meteorological stations. The results showed that strong wind was the power of sandstorm formation, high temperature, little precipitation, more high wind were the main reasons to produce sand storm. Influence system of spring sandstorm was Mongolia cold eddy, strong frontal zone, and surface cold front, the system of upper trough while the summer sandstorm was mainly influenced by high altitude small trough,shear line,cold front,and low heat.

关 键 词：沙尘暴 特征分析 甘肃省 

分 类 号：P429[天文地球—大气科学及气象学]