干旱区生态环境知识资源中心(Arid): 影响北京地区沙尘天气的源地和传输路径分析

Arid

	影响北京地区沙尘天气的源地和传输路径分析
其他题名	Analysis on Source Locations and Transportation Paths of Sand-Dusts Affecting Beijing
	张志刚 1; 高庆先 2; 矫梅燕 1; 毕宝贵 1; 延昊 1; 任阵海 2
ISSN	1001-6929
出版年	2007
卷号	20 期号:4 页码:21-27
中文摘要	利用1980-2005年的地面气象观测资料和沙尘天气过程的卫星遥感资料,逐次分析了影响北京地区沙尘天气过程的演变规律.借助地理信息系统,确定影响北京地区沙尘暴过程的源地和移动路径.结果表明:北京地区沙尘暴主要发生在春季和初夏,4月最多;从历年统计资料看,北京地区沙尘次数总体呈逐渐减少趋势,但20世纪90年代后期,浮尘日数有所增加.根据沙尘源地的起沙情况,将沙尘源地划分为初始源地和加强源地.境外初始沙尘源地位于蒙古国中部和东南部地区,境内位于中国与蒙古国边界;境内加强源地位于我国内蒙古中西部的沙漠、戈壁和沙化草原地区,以及甘肃河西走廊和农牧交错带大面积的开垦地.影响北京地区沙尘天气的传输路径主要包括北路、西路和西北路,其中以西北路和偏北路为主.
英文摘要	Based on the satellite RS data of sand-dust weather processes and the meteorological observational data from 1980 to 2005, the temporal variation of sand-dusts invading Beijing was analyzed. The source locations and transportation paths of sand-dusts were determined in assistance with GIS. The results show that sand-dusts in Beijing occurred frequently in the spring and early summer, especially in April. Based on historic statistical data, the annual number of times of sand-dusts in Beijing is in the trend of decreasing in general, but it increased in late 1990s. According to their source locations, the sand-dusts are classified into two types, i.e. the initial-source and enhancive-source locations. The external initial-source locations are in the middle and southeast of Mongolia. The internal initial-source locations are in the area near the boundary between China and Mongolia. The internal enhancive-source locations are in the desert, gobi and sandy grasslands of middle and west Inner Mongolia, and in the vast reclaimed lands of Hexi Corridor and agro-pastoral ectones of Gansu. There are three transportation paths: north paths, west paths and northwest paths. Most of the external source sand-dusls move along the north and northwest paths.
中文关键词	北京 ; 沙尘天气 ; 沙尘源地 ; 传输路径
英文关键词	Beijing! sand-dusts source locations transportation paths
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:2840145
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/221166
作者单位	1.国家气象中心, 国家气象中心, 北京 100081, 中国; 2.中国环境科学研究院, 北京 100012, 中国
推荐引用方式 GB/T 7714	张志刚,高庆先,矫梅燕,等. 影响北京地区沙尘天气的源地和传输路径分析[J],2007,20(4):21-27.
APA	张志刚,高庆先,矫梅燕,毕宝贵,延昊,&任阵海.(2007).影响北京地区沙尘天气的源地和传输路径分析.,20(4),21-27.
MLA	张志刚,et al."影响北京地区沙尘天气的源地和传输路径分析".20.4(2007):21-27.