2007—2008年库姆塔格沙漠沙尘天气特征与天气分型  

Characteristics of Sand-dust Weather over Kumtagh Desert during 2007—2008and the Weather Styles

作　　者：霍文[1,2] 何清 杨兴华[1] 赵勇[1] 王式功[3] 李耀辉[4] 

机构地区：[1]中国气象局乌鲁木齐沙漠气象研究所,新疆乌鲁木齐830002 [2]新疆师范大学地理科学与旅游学院,新疆乌鲁木齐830054 [3]兰州大学大气科学学院,甘肃兰州730000 [4]中国气象局兰州干旱气象研究所,甘肃兰州730020

出　　处：《中国沙漠》2011年第4期1037-1045,共9页Journal of Desert Research

基　　金：国家科技基础性工作专项(2006FY110800);新疆维吾尔自治区科技攻关项目(200833119);国家科技支撑计划课题(2008BAC40B05-01);中国沙漠气象科学基金项目(Sqj2009002);国家自然科学基金项目(40975097)联合资助

摘　　要：利用2007年库姆塔格沙漠科学考察时自动气象站所获取的数据,分析了沙尘暴过境时库姆塔格沙漠气象要素的变化特征。以库姆塔格沙漠周边气象站点沙尘天气出现时间为依据,选取2008年所有沙尘天气过程,解读相应时间段内Micaps系统中各个层次的资料,客观分析了驱动库姆塔格沙漠沙尘天气爆发的动力成因,将天气形势分为4种类型:冷空气翻山型;冷空气东灌型;锋前热低压发展型;局地对流型。冷空气翻山型与东灌型居多,共7次,锋前热低压发展型与局地对流型较少,仅为2次。利用库姆塔格沙漠北部1号气象站以及南部2号气象站资料,结合库姆塔格沙漠沙尘粒度分析资料,初步讨论了风对库姆塔格沙漠沙丘形态的影响。Based on the observational data from the automatic weather stations over the Kumtagh Desert in 2007,the climatic element variation features were analyzed.According to occurring time of sand-dust weathers recorded by the weather stations surrounding the Kumtagh Desert,we selected all the sand-dust weather processes in 2008 in Kumtagh Desert and interpreted the data at different layers from Micaps system,and analyzed the dynamic causes for driving sand-dust weathers,and classified the weather status into four styles,namely the tramp-over-hill style,the easterly-fill style,the evolution style,and the convection style.The first two styles occurred 7 times,and the last two styles occurred only twice.Finally,combined with the sand grain size data,the impact of wind to shape of sand dunes in the desert was discussed.

关 键 词：沙尘天气 库姆塔格沙漠 翻山型 东灌型 发展型 对流型 

分 类 号：P445.4[天文地球—大气科学及气象学]