Dust Storm Sources and their Transport throughout China
The formation, expansion, transportation and historical variation of dust storms in China are analyzed based on meteorological observation data from 1954 to 2001. The relationship between synoptic elements and dust storm frequencies are also examined. The results show that dust storms are a natural weather phenomenon that is strongly influenced by human activities. These activities can increase the material source of dust storms, as well as increase dust storm frequency; however, drought and lack of rain are the main causes. The storms may be classified as initial-source or enhanced-source; with no clear dividing line between them. According to dust storm initial position from China and East Asia, the dust sources can be further classified as intra-border source and extra-border source. Dust storms can be further divided into local-type and transportable-type according to their magnitude and scope. Finally, satellite remote data are used to trace and analyze dust storms from1998 to 2002. These images also confirm initial-source and enhanced- source and delineate three paths that influence Beijings air quality.
dust storm initial-source enhanced-source transport path
GAO Qinxian REN Zhenhai ZHANG Yungang ZHANG Zhigang WANG Yaoting
Chinese Academy of Environmental Science, Center for Climate Impact Research, SEPA National Meteorological Satellite Center, CMA Nanjing Institute of Meteorology
国际会议
中国-欧盟荒漠化综合治理研讨会(The China-EU Workshop on Integrated Approach to Combat Desertification)
北京
英文
262-272
2003-10-15（万方平台首次上网日期，不代表论文的发表时间）