影响河西走廊春季沙尘暴的物理因素初步分析  

A PRELIMINARY ANALYSIS OF PHYSICAL FACTORS FORMING SANDSFORMS IN SPRING IN HEXI PASSAGEWAY

作　　者：董安祥[1] 白虎志[2] 俞亚勋[1] 张昆[2] 

机构地区：[1]兰州干旱气象研究所,甘肃兰州730020 [2]兰州中心气象台,甘肃兰州730020

出　　处：《甘肃科学学报》2003年第3期25-30,共6页Journal of Gansu Sciences

摘　　要：应用1955年～2000年甘肃省河西走廊14个测站的春季沙尘暴日数,从气象学角度分析了河西走廊春季沙尘暴的物理因素,研究表明:上年春季赤道东太平洋和西风漂流区海温,上年(3～10月)西太平洋副热带高压面积和强度是预测河西走廊春季沙尘暴的信号,初步制作了沙尘暴形成的概念模型和预测模型。The physical factors forming sandstorms in Spring in Hexi Passageway are analyzed by using the observed data at 14 stations from 1955 to 2000. The results show that the marine temperature of equatorial east pacific and west wind drift in the last spring and the area and intensity of subtropical high pressure in the last year (March -October) are signals to forecast the sandstorms in Spring in Hexi passageway. The relevant concept pattern and forecast pattern are given here.

关 键 词：河西走廊 春季 沙尘暴 物理因素 分析 

分 类 号：P445.4[天文地球—大气科学及气象学] P461